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总温分离的首要条件 被引量:1
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作者 颜幼平 潘振宽 王艺兵 《青岛大学学报(工程技术版)》 CAS 1995年第4期73-75,共3页
本文从总能量守恒方程出发,导出了引起总温变化的三大因素,并证明了在无传热的条件下,涡流管中总温分离是由不定常和粘性所引起的。
关键词 ranque──Hilsch效应 总温分离 首要条件 不定常性 粘性
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The Pressure Gradient Elastic Wave: Energy Transfer Process for Compressible Fluids with Pressure Gradient 被引量:1
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作者 Yan Beliavsky 《Journal of Mechanics Engineering and Automation》 2013年第1期53-64,共12页
The temperature separation was discovered inside the short vortex chamber (H/D = 0.18). Experiments revealed that the highest temperature of the periphery was 465 ℃, and the lowest temperature of the central zone w... The temperature separation was discovered inside the short vortex chamber (H/D = 0.18). Experiments revealed that the highest temperature of the periphery was 465 ℃, and the lowest temperature of the central zone was -45 ℃ (the compressed air was pumped into the chamber at room temperature). The objective of this paper is to proof that this temperature separation effect cannot be explained by conventional heat transfer processes. To explain this phenomenon, the concept of PGEW (Pressure Gradient Elastic Waves) is proposed. PGEW are kind of elastic waves, which operate in compressible fluids with pressure gradients and density fluctuations. The result of PGEW propagation is a heat transfer from area of low pressure to high pressure zone. The physical model of a gas in a strong field of mass forces is proposed to substantiate the PGEW existence. This physical model is intended for the construction of a theory of PGEW. Understanding the processes associated with the PGEW permits the possibility of creating new devices for energy saving and low potential heat utilization, which have unique properties. 展开更多
关键词 PGEW (Pressure Gradient Elastic Waves) temperature separation ranque effect vortex chamber heat transfer energysaving low potential heat utilization.
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