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|Title:||Viscous computation of steady/unsteady transonic diffuser flows||Authors:||Xiao, Q.
|Issue Date:||2002||Citation:||Xiao, Q., Tsai, H.M., Liu, F. (2002). Viscous computation of steady/unsteady transonic diffuser flows. 32nd AIAA Fluid Dynamics Conference and Exhibit. ScholarBank@NUS Repository.||Abstract:||The lag model proposed by Olsen and Coakley (2001) is applied to simulate the steady and unsteady transonic flows in a diffuser. The unsteady flows are induced by imposing fluctuating back-pressures. A fully implicit time-accurate multigrid algorithm is used for solving the Navier-Stokes equations and the coupled k-ω turbulence model equations. Two test cases are investigated, one with a weak shock in the channel corresponding to a static-to-total pressure ratio Rp=0.82 at the diffuser exit and the other with a strong shock corresponding to Rp=0.72. The results with the implementation of the lag model are closer to the experimental data for the strong-shock case. However, the computational results are almost the same with and without the lag model for the weak-shock case. © 2002 by the author.||Source Title:||32nd AIAA Fluid Dynamics Conference and Exhibit||URI:||http://scholarbank.nus.edu.sg/handle/10635/130104||ISBN:||9781624101137|
|Appears in Collections:||Staff Publications|
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