Email this article 
Open Access
Subscription or Fee Access
Experimental and Computational Investigations on Flow Characteristics of Supersonic Ejector
(*) Corresponding author
DOI: https://doi.org/10.15866/irease.v13i1.18108
Abstract
Experimental and computational investigations have been conducted to characterize the flow field in the supersonic ejector, with and without secondary inlets of two sizes, at stagnation pressures of 2, 2.5, 3, 4 and 5 bar. In the first case, four secondary inlet openings each with 5 mm diameter are provided on the suction chamber circumferentially. In the second case, four secondary inlet openings each with 10 mm diameter are provided on the suction chamber circumferentially. These two cases are investigated separately, at all the stagnation pressures. The wall pressure variation is validated based on the k-ω SST turbulent model with experimentally measured wall pressure distribution at 2 bar, without secondary inlet flow. Suction is found to increase with the increase of stagnation pressure in the suction chamber. The inducted mass flow promotes the mixing in the shock-train zone, by triggering the significant momentum exchange between the primary flow and secondary flow. Results show that the pressure recovery takes place as the flow enters the divergent portion of ejector.
Copyright © 2020 Praise Worthy Prize - All rights reserved.
Keywords
References
Adrienne B. Little, Yann Bartosiewicz, Srinivas Garimella. Visualization and Validation of Ejector Flow Field With Computational and First-Principles Analysis, in Journal of Fluids Engineering 137 (2015), 051107-1-12.
https://doi.org/10.1115/1.4029534
Federico Mazzelli, Adrienne B. Little, Srinivas Garimella, Yann Bartosiewicz. Computational and experimental analysis of supersonic air ejector: Turbulence modeling and assessment of 3D effects, in International Journal of Heat and Fluid Flow 56 (2015), 305-316.
https://doi.org/10.1016/j.ijheatfluidflow.2015.08.003
Daotong Chong, Mengqi Hu, Weixiong Chen , Jinshi Wang, Jiping Liu, Junjie Yan. Experimental and numerical analysis of supersonic air ejector, IN Applied Energy 130 (2014), 679-684.
https://doi.org/10.1016/j.apenergy.2014.02.023
Srisha M.V. Rao, G. Jagadeesh. Studies on the effects of varying secondary gas properties in a low entrainment ratio supersonic ejector, in Applied Thermal Engineering 78 (2015), 289-302.
https://doi.org/10.1016/j.applthermaleng.2014.12.053
Y. Bartosiewicz, Zine Aidoun, P.Desevaux, Yves Mercadier. Numerical and Experimental Investigations on Supersonic Ejectors, in International Journal of Heat and Fluid Flow 26 (2005) 56-70.
https://doi.org/10.1016/j.ijheatfluidflow.2004.07.003
Srisha M.V. Rao, G. Jagadeesh. Novel supersonic nozzles for mixing enhancement in supersonic ejectors, in Applied Thermal Engineering 71 (2014) 62-71.
https://doi.org/10.1016/j.applthermaleng.2014.06.025
Vincent Lijo, Heuy Dong Kim, Shigeru Matsuo, Toshiaki Setoguchi.
A Study of the Supersonic Ejector-Diffuser system with an inlet orifice in Aerospace Science and Technology 23 (2012) 321-329.
https://doi.org/10.1016/j.ast.2011.08.009
Fan Shi Kong, Heuy Dong Kim, Yingzi Jin, Toshiaki Setoguchi. Application of Chevron Nozzle to a Supersonic Ejector-Diffuser System, in Procedia Engineering 56 (2013) 193-200.
https://doi.org/10.1016/j.proeng.2013.03.107
Sehoon Kim, Sejin Kwon. Experimental Determination of Geometric Parameters for an Annular Injection Type Supersonic Ejector, in Journal of Fluids Engineering 128 (2006) 1164-1171.
https://doi.org/10.1115/1.2353264
Shinichiro Tokudome, Kiyokazu Kobayashi. Experimental Study on Rocket-Ejector Systems, in American Institute of Aeronautics and Astronautics (2006) 7977.
F. S. Kong, Y. Z. Jin, H. D. Kim. Analytical and Computational Studies on the Vacuum Performance of a Chevron Ejector, Shock Waves 26 (2016) 771–788.
https://doi.org/10.1007/s00193-015-0618-8
Olivier Lamberts, Philippe Chatelain, Yann Bartosiewicz. New Methods for Analyzing Transport Phenomena in Supersonic Ejectors, International Journal of Heat and Fluid Flow 64 (2017) 23–40.
https://doi.org/10.1016/j.ijheatfluidflow.2017.01.009
Zuozhou Chen, Chaobin Dang, Eiji Hihara. Investigations on Driving Flow Expansion Characteristics Inside Ejectors, International Journal of Heat and Mass Transfer 108 (2017) 490–500.
https://doi.org/10.1016/j.ijheatmasstransfer.2016.12.040
K.M. Arun, Shaligram Tiwari, A. Mani. Three-dimensional Numerical Investigations on Rectangular Cross-Section Ejector, International Journal of Thermal Sciences 122 (2017) 257-265.
https://doi.org/10.1016/j.ijthermalsci.2017.08.024
Candeniz Seckin. Parametric Analysis and Comparison of Ejector Expansion Refrigeration Cycles with Constant Area and Constant Pressure Ejectors, Journal of Energy Resources Technology 139 (2017) 042006.
https://doi.org/10.1115/1.4036383
Olivier Lamberts, Philippe Chatelain, Yann Bartosiewicz. Numerical and Experimental Evidence of the Fabri-choking in a Supersonic Ejector, International Journal of Heat and Fluid Flow 69 (2018) 194–209.
https://doi.org/10.1016/j.ijheatfluidflow.2018.01.002
Hailun Zhang, Lei Wang, Lei Jia, Xinli Wang. Assessment and Prediction of Component Efficiencies in Supersonic Ejector with Friction Losses, Applied Thermal Engineering 129 (2018) 618–627.
https://doi.org/10.1016/j.applthermaleng.2017.10.054
A. S. Ramesh, S. Joseph Sekhar. Experimental Studies on the Effect of Suction Chamber Angle on the Entrainment of Passive Fluid in a Steam Ejector, Journal of Fluids Engineering 140 (2018) 011106.
https://doi.org/10.1115/1.4037692
Pradeep Gupta, Srisha M. V. Rao, Pramod Kumar, Experimental Investigations on Mixing Characteristics in the Critical Regime of a Low-Area Ratio Supersonic Ejector, Physics of Fluids 31 (2019) 026101.
https://doi.org/10.1063/1.5078433
Ethirajan Rathakrishnan. Applied Gas Dynamics, 2ed, Wiley, 2019.
Refbacks
- There are currently no refbacks.
Please send any question about this web site to info@praiseworthyprize.com
Copyright © 2005-2024 Praise Worthy Prize
