Numerical Simulation of Twin Impinging Jets in a Cross-flow
When a vertical/short take-off and landing (VSTOL) aircraft is operated near the ground, a very complex flow field is created. This flow field can be represented by the configuration of twin impinging jets along the spanwise direction in a cross-flow. This paper presents a numerical study of this flow using the Reynolds Averaged Navier-Stokes (RANS) approach with a Reynolds Stress Model (RSM). The use of an RSM potentially offers a compromise between the computational efficiency of a k-ε model and the accuracy of a Large Eddy Simulation (LES). The current numerical results are validated against experimental data and the mean velocity profiles are reasonably well predicted by both the A-e model and the RSM with slightly better prediction by the RSM. However, the Reynolds stress prediction by the RSM is poor compared with the experimental data while LES does a much better job in this respect, indicating that to capture the unsteady flow features accurately LES is needed.
twin impinging jets cross-flow reynolds stress model
Daniel Ostheimer Zhiyin Yang
Department of Aeronautical and Automotive Engineering Loughborough University Loughborough LE11 3TU, UK
国际会议
The 3rd International Symposium on Jet Propulsion and Power Engineering(第三届喷气推进与动力工程国际会议 ISJPPE)
南京
英文
176-183
2010-09-13（万方平台首次上网日期，不代表论文的发表时间）