CFD-Exergy analysis of the flow in a supersonic steam ejector

3rd International Conference on Mathematical Modeling in Physical Sciences

物理学;数学

Boulenouar, M.^1 ; Ouadha, A.^2

Département de Génie Maritime, Faculté de Génie Mécanique, Université des Sciences et de la Technologie Mohamed BOUDIAF d'Oran, B.P. 1505, Oran El-M'naouar, Oran

31000, Algeria^1

Laboratoire d'Energie et Propulsion Navale, Faculté de Génie Mécanique, Université des Sciences et de la Technologie Mohamed BOUDIAF d'Oran, B.P. 1505, Oran, Oran El-M'naouar

31000, Algeria^2

关键词: Ejector refrigeration systems;    Entrainment ratio;    Exergy Analysis;    Exergy efficiencies;    Finite volume approach;    Governing equations;    Mean temperature;    Turbulence effect;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/574/1/012123/pdf
DOI  :  10.1088/1742-6596/574/1/012123

来源: IOP

【 摘 要 】

The current study aims to carry out a CFD-exergy based analysis to assess the main areas of loss in a supersonic steam ejector encountered in ejector refrigeration systems. The governing equations for a compressible flow are solved using finite volume approach based on SST k-ω model to handle turbulence effects. Flow rates and the computed mean temperatures and pressures have been used to calculate the exergy losses within the different regions of the ejector as well as its overall exergy efficiency. The primary mass flow rate, the secondary mass flow rate and the entrainment ratio predicted by the model have been compared with the experimental data from the literature.