۱D Steady-State Numerical Results for Critical Two-Phase Flow – Critical Location and Pressure Profiles
Publish place: Journal of Applied Fluid Mechanics، Vol: 9، Issue: 0
Publish Year: 1395
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JAFM-9-0_003
تاریخ نمایه سازی: 18 بهمن 1400
Abstract:
The use of two-phase ejectors to improve refrigeration systems encounters today a great interest. However, modeling of such devices with low void fraction at the entrance of the motive nozzle, presents significant challenges. The choking conditions and the discontinuities appearing in a two-phase flow in a nozzle are not well documented and some works are needed to better anticipated flow behavior under these conditions. This paper presents a steady state two-phase flow model including new choking criterions for one-dimensional conservative systems. The present model is a two-fluid, one pressure model with thermal equilibrium and mechanical disequilibrium. As a first step, this model is used to study the flow in the motive nozzle of an ejector.
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Authors
S. Martel
Research Institut of Hydro-Quebec, Shawinigan, Quebec
M. Dostie
University of Sherbrooke
Y. Mercadier
University of Sherbrooke