CFD simulation on the effect of primary nozzle geometries for a steam ejector in refrigeration cycle
CFD simulation on the effect of primary nozzle geometries for a steam ejector in refrigeration cycle
复制标题
DOI：
10.1016/j.ijthermalsci.2012.07.009
复制
发表时间：
2013-01-01
影响因子：
4.5
通讯作者：
Sriveerakul, Thanarath
中科院分区：
文献类型：
--
作者：
Ruangtrakoon, Natthawut;Thongtip, Tongchana;Sriveerakul, Thanarath
在这项研究中，CFD技术被用来调查的影响，主喷嘴的几何形状的喷射器用于蒸汽喷射制冷循环的性能。在所有情况下，只有一个固定的几何形状的混合室连同八个不同的主喷嘴进行了数值研究，使用商业计算流体动力学软件包，FLUENT 6.3。观察并分析了对主流体压力、质量流量和马赫数的影响。马赫数等值线被用来解释发生在引射器内的混合过程。结果表明，混合腔内混合流体激波位置和主流体射流膨胀角对引射器性能有重要影响。(C)2012年Elsevier Masson SAS。All rights reserved.
In this study, the CFD technique was employed to investigate the effect of the primary nozzle geometries on the performance of an ejector used in the steam jet refrigeration cycle. In all cases, only one fixed-geometry mixing chamber together with eight different primary nozzles was investigated numerically using the commercial CFD package, FLUENT 6.3. The effects on the primary fluid pressure, mass flow rate and Mach number were observed and analyzed. The Mach number contour lines were used to explain the mixing process occurring inside the ejector. It was found that shock's position of the mixed fluid and the expansion angle of the primary fluid jet stream within the mixing chamber played a very important role in the ejector performance. (C) 2012 Elsevier Masson SAS. All rights reserved.