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A straightforward inexpensive method for hip cast immobilization in infants and children. [PDF]
Ann MedChen K, Su Y.
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The Size Effect on Critical Back Pressure Ratio for Sonic Nozzles
ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer, Volume 3, 2009 As an important parameter, the critical back pressure ratio is directly related with the application of sonic nozzle. When the stagnation condition was fixed, the size effect on critical back pressure ratio was investigated. Some numerical simulations were conducted for sonic nozzles with throat diameter within (0.15–5) mm under laminar flow.
Chunhui Li, Chi Wang
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Experimental investigation on ejector performance near critical back pressure
International Journal of Refrigeration, 2017Abstract Critical back pressure plays a crucial role in the performance of ejector systems; however, few systematical investigations have been conducted to study an ejector operating near the critical point. In this paper, the effects of critical back pressure with variations of primary pressure on ejector performance were investigated in an ejector ...
Lei Wang +4 more
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Flow Measurement and Instrumentation, 2020
Abstract Critical-flow Venturi nozzles (CFVNs) are used widely as transfer standards and can measure flow rates accurately. However, previous research has reported that in some CFVNs, the pressure-recovery effect of the diffuser is poor, and it is called the premature unchoking phenomenon.
Naoki Takegawa +2 more
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Abstract Critical-flow Venturi nozzles (CFVNs) are used widely as transfer standards and can measure flow rates accurately. However, previous research has reported that in some CFVNs, the pressure-recovery effect of the diffuser is poor, and it is called the premature unchoking phenomenon.
Naoki Takegawa +2 more
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Analysis of The Ejector Critical Back Pressure to A Ejector Refrigeration System
2009 4th IEEE Conference on Industrial Electronics and Applications, 2009In order to enhance the ejector performance, a model for the solar ejection refrigeration system used R134a as refrigerant has been established in this paper. The relationship between the ejector critical back pressure and the system working condition has been discussed.
Fan Xiao-wei, Wei Jing, Zheng hui-fan
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Inversion of the Critical Back Pressure Relation in Isentropic Nozzle Flow
41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2005We consider the one-dimensional isentropic flow equation that relates the nozzle expansion area ratio to the critical back pressure that must not be exceeded in avoidance of a subsonic throat condition. To eliminate guesswork and numerical root solving in deducing the critical back pressure, we apply asymptotic tools to invert this relation ...
Joseph Majdalani, Esam Abu-Irshaid
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Indoor and Built Environment, 2019
Nowadays, the critical velocity and back-layering length are the key parameters in longitudinal ventilation design. However, most studies research them at standard air pressure but ambient pressure decreases at high-altitude area and the reduced ambient pressure could affect the smoke movement characteristics in a tunnel fire.
Guanfeng Yan +3 more
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Nowadays, the critical velocity and back-layering length are the key parameters in longitudinal ventilation design. However, most studies research them at standard air pressure but ambient pressure decreases at high-altitude area and the reduced ambient pressure could affect the smoke movement characteristics in a tunnel fire.
Guanfeng Yan +3 more
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Proceedings of the 19th International Flow Measurement Conference 2022 on Flow Measurement - FLOMEKO 2022, 2023
Feng Gao +5 more
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Feng Gao +5 more
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