采用R134a制冷剂的超声速引射器工况对喷口最佳出口位置影响的CFD分析

IF 1 4区工程技术 Q4 MECHANICS

Comptes Rendus Mecanique Pub Date : 2021-04-14 DOI:10.5802/crmeca.60

A. Hadj, M. Boulenouar

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引用次数: 1

摘要

本文采用计算流体力学方法研究了工况对喷射器出口位置(NXP)最优值的影响。该喷射器使用气体R134a作为工作流体。采用REFPROP 7.0数据库状态方程和高雷诺数版本的SST k -ω模型进行了数值试验。在夹带比和临界温度方面，计算值与测量值很好地吻合。此外，数值结果表明，最优的NXP使喷射器性能最大化，并且高度依赖于操作条件。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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CFD analysis of operating condition effects on optimum nozzle exit position of a supersonic ejector using the refrigerant R134a

In this work, the computational fluid dynamics technique is employed to study operating condition effects on the optimum value of an important parameter called the nozzle exit position (NXP) for an ejector design. This ejector uses the gas R134a as the working fluid. Numerical tests are carried out using a combination of the REFPROP 7.0 database state equation and the high-Reynolds version of the SST k–ω model. Good agreement in terms of entrainment ratio and critical temperature is obtained between computed values and measurements. In addition, numerical results indicate that the optimum NXP maximizes ejector performance and is highly dependent on operating conditions.

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来源期刊

Comptes Rendus Mecanique 物理-力学

CiteScore

1.40

自引率

0.00%

发文量

审稿时长

12 months

期刊介绍： The Comptes rendus - Mécanique cover all fields of the discipline: Logic, Combinatorics, Number Theory, Group Theory, Mathematical Analysis, (Partial) Differential Equations, Geometry, Topology, Dynamical systems, Mathematical Physics, Mathematical Problems in Mechanics, Signal Theory, Mathematical Economics, … The journal publishes original and high-quality research articles. These can be in either in English or in French, with an abstract in both languages. An abridged version of the main text in the second language may also be included.