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  • Effect of air-jet texturing on adhesion behaviour of ...

    2008-8-30 · All the air-jet texturing studies were carried out in the Laboratories of Korteks, Turkey on a SSM Stähle RM3T machine with the following parameters: 500. m/min texturing speed, 200 °C heater temperature, Hemajet T341 type of nozzle.. Drawing and air-jet texturing of the feed yarns were performed in one step.

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  • Heat transfer due to impinging co-axial jets and the jets ...

    2009-4-1 · Effect of nozzle geometry on local convective heat transfer to a confined impinging air jet Experimental Thermal and Fluid Science , 13 ( 1996 ) , pp. 71 - 80 Article Download PDF View Record in Scopus Google Scholar

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  • www.spm.com

    2020-1-10 · Effect of air-jet texturing on adhesion behaviour of polyester yarns to rubber Serpil Koral Koca,*, Asli Sengonul Hockenbergera, Qufu Weib aFaculty of Engineering and Architecture, Textile Engineering Department, Uludag University, 16059 Gorukle, Bursa, Turkey b Key Laboratory of Eco-Textiles, Ministry Of Education, Jiangnan University, Wuxi 214122, PR China

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  • A New Approach to Determination of the Instability of Air ...

    2021-7-9 · Air-Jet Texturing of the Yarns . Air-jet texturing of the filaments was carried out on a SSM Stähle RM3-T machine, with the following parameters: 250 m/min texturing speed, Hemajet A347 type of nozzle, 0.8 MPa air pressure. The filaments were fed to the machine as single end method with two different overfeeds (15%, 30%).

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  • Dielectric Behavior Characterization of a Fibrous

    2017-7-17 · nozzle onto the collector due to high electrostatic force acting on the polymer droplet at the tip of the nozzle [27]. As the polymer jet traveled through air, a fiber was formed, and its diameter was reduced significantly by the solvent evaporation. The randomly oriented, fine fibers collected on the screen positioned above the collector

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  • Experimental and numerical investigation of liquid jet ...

    2016-11-14 · The effect of jet velocity on the deflection/reflection on a hydrophobic surface depends on the impingement rate (r/d i), as shown in figure 20. For the lowest velocity (We:4.7), the liquid jet is deflected with a large angle at lowest r/d i and the deflection angle increases towards zero with increasing r/d i.

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  • (PDF) Scour under submerged circular vertical jets in ...

    impinging on smooth walls having air jet nozzle diameter of 6.4 and 12.7 mm in a cylindrical plenum, with the air regu- lated by the compressed air arrangement. The velocity at the nozzle varies ...

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  • (PDF) Effects of electrospinning process parameters on ...

    The effects of process parameters such as polymer concentration in solution, electrical field, diameter of the syringe needle, feed rate, and collector geometry on nanofibers were investigated.

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  • (PDF) Prediction of scour depth from free falling flip ...

    A simple method for describing the free falling flip bucket jet angle on the basis of the Veronese formula has been developed. Prototype scours are investigted for six large dams in Asia with flip ...

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  • IOP Conference Series: Materials Science and Engineering ...

    The University of Technology in Baghdad represented by the Civil Engineering Department has been collaborated with the Istanbul Technical University-Turkey to set the fourth release of the International Conference on Buildings, Construction and Environmental Engineering (BCEE4), which is being held this year in Istanbul Technical University, Ayazaga Campus from 7 to 9 October 2019.

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  • IOP Conference Series: Materials Science and Engineering ...

    The ModTech Professional Association in cooperation with 'Gheorghe Asachi' Technical University of Iasi as the host institution organized the 7th edition of the ModTech2019 International Conference, in the Ramada Hotel, Iasi, Romania between 19 and 22 June 2019. Other prestigious institutions, from Romania and abroad, such as the Society of ...

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  • FUN3D Manual :: Chapter 2: Reference Information

    2021-8-9 · The “Axisymmetric Near-Sonic Jet” Case from the Turbulence Modeling Resource was used for this study: a Mach 0.985 flow through the two-inch diameter Acoustic Reference Nozzle (ARN2). Simulations were run with FUN3D and used the Menter Shear Stress Transport (SST-V), Spalart-Allmaras (S-A), and k-kL turbulence models.

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  • Professor Andy J Keane

    Professor Andy J Keane is Professor of Computational Engineering within Engineering and Physical Sciences at the University of Southampton. I have been at Southampton as a Professor since January 1996, before which I was at Oxford University as a Lecturer in Structural Dynamics and Fellow of Pembroke College.

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  • (PDF) Passive mixing control for innovative air diffusion ...

    The global dynamical jet widths DY0.5ext and DY0.1ext, which defi- This signifies that for S ¼ 2.7De, the effect of the jet interaction is nitions are given in Fig. 7a, have been represented in Fig. 8, for the two weak at the exit plane for this geometry. This is not the case for the type of flows.

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  • Fundamentals of soft robot locomotion

    2017-5-24 · Squid jet propulsion inspired the development of a silicone chamber compressed by SMAs , whereas multi-nozzle three-dimensional-printed propellers were developed in . Additional key advantages of soft-bodied devices over their rigid counterparts are especially evident in cephalopod-inspired shape-changing designs.

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  • Content Posted in 2011

    PDF. Shift Peak Frequency or Jet Noise to Reducing Jet Noise of Compressor Valve, Qian Xinghua. PDF. Shock Waves in Supersonic Two-Phase Flow of CO2 in Converging-Diverging Nozzles, Masafumi Nakagawa, Menandro Serrano Serrano, and Atsushi Harada. PDF. Shopping behavior in food retail markets: Consumer types and methods, Joyia T Smith. PDF

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  • Sustainability

    The present study refers to 3D metal additive manufacturing (MAM) from an interdisciplinary perspective, providing an overview on sustainability, basic principles, and a conceptual framework on environmental performance, implicit constraints regarding materials, recycling and use/reuse tools for extended life cycle, regarded as the trendiest manufacturing processes in terms of material ...

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  • Plant Engineering & Construction Division

    2014-10-8 · STEEl BuSinESS OriEnTEd EnGinEErS GlOBal STandard FOr Q&HSE 15yrs 20yrs 5yrs 10yrs 210 478 75 246 Quality Environment Safety TECHnOlOGY EXPErTiSE POSCO E&C’s competence in basic engineering has evolved based on its rich experience developed from manufacturing, installation and commissioning tasks conducted in both domestic and overseas sites.

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  • FUN3D Manual :: Chapter 2: Reference Information

    2021-8-9 · The “Axisymmetric Near-Sonic Jet” Case from the Turbulence Modeling Resource was used for this study: a Mach 0.985 flow through the two-inch diameter Acoustic Reference Nozzle (ARN2). Simulations were run with FUN3D and used the Menter Shear Stress Transport (SST-V), Spalart-Allmaras (S-A), and k-kL turbulence models.

    Get Price
  • Professor Andy J Keane

    Professor Andy J Keane is Professor of Computational Engineering within Engineering and Physical Sciences at the University of Southampton. I have been at Southampton as a Professor since January 1996, before which I was at Oxford University as a Lecturer in Structural Dynamics and Fellow of Pembroke College.

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  • Volume Table of Contents - SPIE Digital Library

    2020-12-14 · The SMM is required to have (1) the tilt stability better than 0.035″ (3σ) on the sky angle for the diffraction-limited spatial resolution of 0.2″, (2) step response shorter than 32 msec for rapid scanning observations, and (3) good linearity (i.e. step uniformity) over the entire field-of-view (60″x60″).

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  • IOP Conference Series: Materials Science and Engineering ...

    2016-9-25 · It is the 20th version of a series of conferences that first started in 1996 in Iasi as TMCM 96 and since 2013 adopted the name of ImanE.It is the first time it is held in Greece after a proposal of Professor Oana Dodun.This year the field of Energy was added to the program.

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  • Plant Engineering & Construction Division

    2014-10-8 · STEEl BuSinESS OriEnTEd EnGinEErS GlOBal STandard FOr Q&HSE 15yrs 20yrs 5yrs 10yrs 210 478 75 246 Quality Environment Safety TECHnOlOGY EXPErTiSE POSCO E&C’s competence in basic engineering has evolved based on its rich experience developed from manufacturing, installation and commissioning tasks conducted in both domestic and overseas sites.

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  • Theses and Dissertations Available from ProQuest

    Dissertations & Theses from 2019. Krishnan, Ankita (2019) Understanding Autism Spectrum Disorder Through a Cultural Lens: Perspectives, Stigma, and Cultural Values among Asians . Suzuki, Takakuni (2019) Quantifying the Relations among Neurophysiological Responses, Dimensional Psychopathology, and Personality Traits . Dissertations & Theses from 2018. Abdel-Salam, Ahmed Nabil (2018) …

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  • Fundamentals of soft robot locomotion

    2017-5-24 · Squid jet propulsion inspired the development of a silicone chamber compressed by SMAs , whereas multi-nozzle three-dimensional-printed propellers were developed in . Additional key advantages of soft-bodied devices over their rigid counterparts are especially evident in cephalopod-inspired shape-changing designs.

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  • The Horizontal Directional Drilling Process

    2015-8-6 · section (after the breakover point). An air line may also be required to break the vacuum which may form at the leading edge as the pull section is pulled up to the rig. The amount of water placed in the pipe is controlled to provide the most advantageous distribution of buoyant forces. Some contractors may choose to establish a constant buoyancy.

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  • TMT 2011

    PROCEEDINGS 15 th International Research/Expert Conference ”Trends in the Development of Machinery and Associated Technology” TMT 2011 Prague, Czech Republic, 12-18 September 2011 EDITORS: Dr. Sabahudin Ekinović, Dr. Joan Vivancos Calvet, Dr. Emin Tacer

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  • Heat Recovery for a Textile Stenter: CFD Analysis of Air ...

    Modern textile stenters are designed to reduce the inefficiency of the process and to recover the flow stream, which still contains a relatively high energetic value. In recent years, research has focused on the recovery of the energy content of the low-temperature exhaust flow; nonetheless, another important aspect that may increase the efficiency of the process is the reduction of the ...

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  • ABSTRACT Begenir, Asli. The Role of Orifice Design in ...

    2016-8-30 · ABSTRACT Begenir, Asli. The Role of Orifice Design in Hydroentanglement. (Under the direction of Dr. Behnam Pourdeyhimi) This research was devoted to study the role of the nozzle geometry in …

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  • 7 3 33742 - ntrs.nasa.gov

    2020-8-6 · effects on jet exhaust noise due to a wing are made for the various nozzle geometries tested. APPARATUS Acoustic Test Stand Free jet.- An outdoor 13-inch diameter free jet (fig- 3) was used to simulate forward velocity. For this rig, dry cold air (at about 520° R) was supplied to a 16-inch diameter gate valve from the Center's 125 psig air ...

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  • Effects of the nozzle configuration on solar-powered ...

    2017-7-1 · A supersonic nozzle and a subsonic nozzle are employed in the variable geometry ejector. • Experiment has been conducted on the ejector performance with various operating conditions. • The variable geometry ejector is capable to provide stable performance with unstable heat input. • Numerical simulation is conducted to reveal effect of ...

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  • Impact characteristics and stagnation formation on a

    2021-5-26 · atmosphere as a free jet to impinge a target surface. The abrasive particles are mixed with the waterjet in the mixing chamber by an assistance of air entrainment during the abrasive feeding process. The air entrainment creates a suc-tion effect that the particles are accelerated and axially oriented before exiting the nozzle [27, 28]. As it is ...

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  • Numerical Investigation of Nozzle Jet Flow in a Pelton ...

    The characterization of flow through Pelton hydro turbines allows the optimization of their operation and maximization of energy performance. The flow in the injector of Pelton turbines and in the free jet area (the area from the injector outlet surface to the runner bucket inlet surface) is influenced by several parameters: the geometry of injector components (nozzle and injector spear), the ...

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  • NUMERICAL INVESTIGATION OF COMBINED EFFECT OF

    2019-10-13 · Lin et al. [4] experimentally investigated heat transfer in confined air jets. The effects of Reynolds number and jet-target plate spacing on heat transfer were studied in this study. As a result of local and average Nusselt numbers at the stagnation point, it has been found that effect of the change in jet …

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  • Hysteresis of the Coanda Effect

    2017-9-20 · Hysteresis of the Coanda Effect. Contributed by the Fluids Engineering Division of ASME for publication in the J OURNAL OF F LUIDS E NGINEERING. Manuscript received March 10, 2017; final manuscript received July 23, 2017; published online September 20, 2017. Assoc. Editor: Praveen Ramaprabhu. Skotnicka-Siepsiak, A. (September 20, 2017).

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  • International Journal of Turbo & Jet-Engines

    1985-3-1 · Lip thickness is defined as the thickness of primary nozzle wall separating primary jet and secondary jet at the co-flowing nozzle exit. Co-flowing jets from a primary nozzle of diameter 10 mm (1.0 D p ) and a secondary duct with lip thickness (LT) 0.2 D p , 1.0 D p and 1.5 D p at Mach numbers 0.6, 0.8 and 1.0 have been studied.

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  • An Investigation of Abrasive Water Jet Machining on ...

    In the present research work, the effect of abrasive water jet (AWJ) machining parameters such as jet operating pressure, feed rate, standoff distance (SOD), and concentration of abrasive on kerf width produced on graphite filled glass fiber reinforced epoxy composite is investigated. Experiments were conducted based on Taguchi’s L 27 orthogonal arrays and the process parameters were ...

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  • Impact of Jet Reynolds Number and Feed Channel

    2011-5-9 · the effect of inclination of an impinging air jet on heat transfer characteristics. Roy and Patel [7] studied the effect of jet angle impingement on local Nu and nozzle to target plane spacing at different Re. Ekkad et al [8] studied the effect of impinging jet angle …

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  • A non-contact end-effector for the handling of garments

    an air permeable structure, a novel nozzle was designed and developed. This nozzle utilises the phenomena of the radial air outflow. It is envisaged that this new nozzle will handle materials by eliminating surface marking and air permeable structure problems. KEYWORDS: Handling, Garment, End-effector, Gripper, Fabric. 1. INTRODUCTION

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  • AIAA-2002-2728 Active Control of Supersonic Impinging

    2003-2-21 · The geometry used is very simple and consists of a single jet as shown in Fig. 1. The microjets are arranged around the primary nozzle as shown in Fig. 2. Further details of the hardware will be discussed in the Experimental section. The reasoning behind this control approach was based on the fact that the array of

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  • The Effect of the Air Blast Sprayer Speed on the Chemical ...

    ABSTRACT. A study was conducted to determine the spray deposition patterns for air blast sprayers used to apply chemicals to the canopy of Semillon grapevine in vineyard. The application carried out in 12 bars and three sprayer speed (2.1-4.9-7.7 km h -1 ). The spray deposition was measured on the point in the different distances (1.5-3-6-9 m).

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  • Head Loss Estimation of Water Jets from Flip Bucket of ...

    2021-7-6 · Fig. 3 Effect of air resistance on jet trajectory. [7] It is observed that the effect of air resistance is small whenever V j is less than about 20 m/s, but the throw distance is reduced by about 30% when the velocity is close to 40 m/s. 2.3 Head Loss The main purpose of the ski jump is moving

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  • Breakup characteristics of power-law liquid sheets

    2019-5-16 · Breakup characteristics of power-law liquid sheets formed by two impinging jets Fuqiang Bai1,2, Hai Diao1, Mengzheng Zhang3, Qing Chang1, Endong Wang1 and Qing Du1 1 State Key Laboratory of Engines, Tianjin University, Tianjin, 300072, People’s Republic of China 2 Tianjin Internal Combustion Engine Research Institute, Tianjin, 300072, People’s Republic of China

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  • EFFECT OF INTERNAL RIB CONFIGURATIONS ON THE

    2009-6-9 · 9*14 August 2009, Antalya, Turkey . EFFECT OF INTERNAL RIB CONFIGURATIONS ON THE DISCHARGE COEFFICIENT OF A 30-DEG INCLINED FILM COOLING HOLE . Christian Heneka*, Achmed Schulz and Hans-Joerg Bauer Institut fuer Thermische Stroemungsmaschinen . Universitaet Karlsruhe (TH), 76128 Karlsruhe, Germany (* Corresponding author: [email protected] ...

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  • Studying the Effect of the Air-Cap Configuration in Twin ...

    Abstract The computational fluid dynamics approach is adopted in this work using the design of experiments to reveal the effect of the air-cap configurations on the obtained gas velocity, the shear stresses, the high velocity zone, and the convergence of the obtained spraying plume in the twin-wire arc-spraying process. The parameters, which are revealed to optimize the air-cap configuration ...

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  • IOP Conference Series: Materials Science and Engineering ...

    2016-9-25 · It is the 20th version of a series of conferences that first started in 1996 in Iasi as TMCM 96 and since 2013 adopted the name of ImanE.It is the first time it is held in Greece after a proposal of Professor Oana Dodun.This year the field of Energy was added to the program.

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  • Computational Study on Effect of Synthetic Jet Design ...

    2010-8-16 · Effects of amplitude and frequency of synthetic jet on the characteristics of induced jet are investigated. To estimate effects of the parameters, flow inside the synthetic jet cavity and orifice and the outer flow is simultaneously simulated using large-eddy simulation (LES). Comparison of the present LES result with the experimental data shows that three-dimensional LES of the flow inside ...

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  • (PDF) F L U I D M E C H A N I C S FUNDAMENTALS AND ...

    Download Free PDF. F L U I D M E C H A N I C S FUNDAMENTALS AND APPLICATIONS FOURTH EDITION. 1051 Pages. F L U I D M E C H A N I C S FUNDAMENTALS AND APPLICATIONS FOURTH EDITION. Eduardo Ramirez. Download PDF. Download Full PDF Package. This paper. A short summary of …

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  • Press EN - Itema

    PRESS RELEASE – 22/03/2017. Colzate (Italy) and Istanbul (Turkey) – Itema, the world’s largest privately held provider of advanced weaving solutions, including best-in-class weaving machines, spare parts and integrated services, is exhibiting at EGE TMF in Denizli (Booth C2) and KTM in Kahramanmaraş (Booth B1).

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    AIAA is the world’s largest aerospace technical society. With nearly 30,000 individual members from 85 countries, and 95 corporate members, AIAA brings together industry, academia, and government to advance engineering and science in aviation, space, and defense.

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  • Gas Turbine Propulsion Systems

    Major changes in gas turbine design, especially in the design and complexity of engine control systems, have led to the need for an up to date, systems-oriented treatment of gas turbine propulsion. Pulling together all of the systems and subsystems associated with gas turbine engines in aircraft and marine applications, Gas Turbine Propulsion Systems discusses the latest developments in the ...

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  • Dl - GBV

    2007-3-16 · Controlling of distortion by means of quenching in adapted jet fields. Sven Schiittenberg, Martin Hunkel, Udo Fritsching, Hans-Werner Zoch, Foundation Institute for Materials Science (IWT), Bremen, Germany. 389 Minimising stress and distortion for shafts and discs by controlled quenching in a field of nozzles.

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  • (PDF) EUROASIA Congress on Scientific Researches and ...

    Download Full PDF Package. This paper. A short summary of this paper. 37 Full PDFs related to this paper. Read Paper. EUROASIA Congress on Scientific Researches and Recent Trends-VII EUROASIA CONGRESS ON SCIENTIFIC RESEARCHES AND RECENT TRENDS-VII.

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  • LaMer's 1950 model of particle formation: a review and ...

    Abstract. A review is presented of the pioneering 1950 model (V. K. LaMer, R. H. Dinegar, Theory, Production and Mechanism of Formation of Monodispersed Hydrosols, J. Am. Chem. Soc., 1950, 72, 4847–4854) of how monodisperse particles might possibly be formed.The review begins with a look at the basis of the 1950 model in fluctuation and classical nucleation theories.

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  • Performance assessment of solar chimney power plants with ...

    Divergent chimney geometry enables greater volumes of air to enter the turbine section, which yields to remarkable improvements in mass flow rates thus air velocities. However, it is well known that mass flow rate is also affected by buoyant forces associated with temperature and pressure distributions along the collector and around the chimney ...

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  • Acoustically powered surface-slipping mobile microrobots ...

    2020-2-18 · Untethered microrobots have significant applications in medical interventions such as targeted drug delivery. Here, we present an acoustically propelled microrobot that uses a fast and unidirectional surface-slipping locomotion strategy to navigate on both flat and curved surfaces. The three-dimensionally microprinted microrobot contains a trapped spherical air bubble to harness …

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  • ITMA - 2015 - Innovation in Textile Machinery Spinnning ...

    2015-12-11 · J 26 Air-jet Spinning Machine. With the J 26, Rieter extends the application range for air-jet technology and presents an additionally optimised machine. New: Processing of polyester with P 26 With the processing of polyester, the challenge lies in the deposits of spinning finish and co-polymers.

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  • LaMer's 1950 model of particle formation: a review and ...

    Abstract. A review is presented of the pioneering 1950 model (V. K. LaMer, R. H. Dinegar, Theory, Production and Mechanism of Formation of Monodispersed Hydrosols, J. Am. Chem. Soc., 1950, 72, 4847–4854) of how monodisperse particles might possibly be formed.The review begins with a look at the basis of the 1950 model in fluctuation and classical nucleation theories.

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  • How to Make a Decision: The Analytic Hierarchy Process ...

    1994-12-1 · Comparisons must fall in an admissible range of consistency. The analytic hierarchy process (AHP) includes both the rating and comparison methods. Rationality requires developing a reliable hierarchic structure or feedback network that includes criteria of various types of influence, stakeholders, and decision alternatives to determine the best ...

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  • (PDF) Estimation of Cooling Energy Demand and Carbon ...

    Global warming and the urban heat island effect in large towns and cities demand new approaches to cooling buildings in an efficient and sustainable way. Modern refrigeration, air conditioning and heat pump (RACHP) systems can achieve a high

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  • US9230055B2 - Method of optimizing film cooling ...

    A method, apparatus and program product are provided to optimize film cooling performance for turbomachinery components. A design space is defined by selecting process variables and limits. A random initial population of a plurality of designs is provided using Latin hypersquare sampling, varying the process variables across the design space.

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  • Debunking Evolution - Scientific evidence against ...

    2021-8-28 · The strongest scientific evidence against evolution: 'Evolution' mixes two things together, one real, one imaginary. People are shown the real part, which makes them ready to believe the imaginary part. That is how the idea of biological evolution has spread since 1859. Variation (microevolution) is the real part.

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  • ITMA - 2015 - Innovation in Textile Machinery Spinnning ...

    2015-12-11 · J 26 Air-jet Spinning Machine. With the J 26, Rieter extends the application range for air-jet technology and presents an additionally optimised machine. New: Processing of polyester with P 26 With the processing of polyester, the challenge lies in the deposits of spinning finish and co-polymers.

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  • Labelexpo Europe 2017 preview A-Z

    Labelexpo Europe 2017 takes place September 25-28 in Brussels, Belgium, and is set to be the biggest edition in the show's history. As well as the below exhibitor-by-exhibitor preview, read Andy Thomas' opinion article on how Labelexpo Europe is broadening its horizons in 2017, and L&L editor James Qurk's leader from issue 4 on how boundaries are shifting and the term 'label' is being redefined.

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    Step-by-step solutions to millions of textbook and homework questions! - Slader

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  • Aircraft Maintenance EPR Bullets

    2021-8-21 · MSE rate. - Performed 46 main landing gear break changes--helped push deployed msn capability rate 10% above ACC std. - Performed 58 maintenance actions that directly contributed to 336th AT impressive 94% in-commission rate. - Performed 65 inspections and maintenance actions; key to flight's 95% in-commission rate--3.5K sorties flown.

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  • Optics in three-dimensional printing - Velo3D, Inc.

    2021-8-23 · The present disclosure provides various apparatuses, systems, software, and methods for three-dimensional (3D) printing. The disclosure delineates various optical components of the 3D printing system,

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