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  • Numerical simulation of flow field in the pneumatic ...

    2018-6-4 · Pneumatic compact spinning is the most widely used compact spinning method at present, in which the negative pressure airflow is used to condense the fiber in order to decrease the spinning triangle and improve the yarn qualities. Therefore, the research on flow field in the condensing zone is always the emphasis for pneumatic compact spinning.

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  • NASA - Dryden Technical Report Server

    2013-7-3 · Such reconstruction provides a basis for inferring the airdata parameters of the airplane (ref. 13). Pneumatic Lag and Attenuation. During unsteady flight, pneumatic lag and attenuation may affect pressure measurements. Pressure variations propagate as waves through the pneumatic tubing to the pressure transducer.

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  • Understanding Airflow in Industrial Systems - Technical ...

    2020-11-28 · Airflow commonly expresses in the unit feet per minute (FPM) or cubic feet per minute (CFM). CFM is air velocity multiplied by the duct’s area by the air velocity flowing through a particular passage. Figure 1. Airflow happens through a series of pipes and ducts on a scale from single rooms to whole factories. Image courtesy of Peter H.

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  • Pneumatic Conveyance System including Waste Airflow ...

    In general, in one aspect, the disclosure describes a pneumatic conveyance system including waste airflow electrical power generation. The system is to move material from a first location to a second location and includes routing conduit to provide a pathway through which the material is moved, an airflow source to provide an airflow to facilitate the transportation of the material through the ...

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  • Pneumatic system guidelines for success - Design World

    2015-10-8 · Pneumatic system guidelines for success. Following these design rules will ensure a successful machine automation application. Pneumatic cylinders are a popular way to clamp, position and transfer parts in automated equipment. They also offer one of the simplest ways to achieve mechanical motion and fixturing of parts (Figure 1).

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  • Evaluation of air permeability in layered unsaturated ...

    2006-12-14 · Field estimation of air permeability is important in the design and operation of soil-vapor extraction systems. Previous models have examined airflow in homogenous soils, incorporating leakage through a low-permeability cap either as a correction to the airflow equation or as a boundary condition.

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  • Frontiers

    2021-1-14 · Introduction: The relationship between objective indicators of nasal obstruction and airflow limitation in children with bronchial asthma (BA) and allergic rhinitis (AR) has not yet been studied.Objective: To study the relationship between objective parameters of nasal obstruction and airflow limitation, determined using the methods of anterior active rhinomanometry (AARM) and …

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  • Professor Yan Shi from Beijing University of Aeronautics and ...

    2020-11-26 · Then, Professor Shi introduced in detail the three key technologies of real-time estimation technology of respiratory mechanics parameters, online identification technology of sputum stasis degree and intelligent control technology of sputum suction airflow.

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  • Pneumatic Landslide Generator: International Journal of ...

    2018-6-11 · The pneumatic landslide generator was designed to control the slide impact characteristics and enable exact reproduction and independent variation of single dynamic slide parameters. The two pneumatic linear drives catapulted the landslides to velocities up to …

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