Numerical Simulation of Acoustic Waves Interacting with a Shock Wave in a Quasi-ID Convergent-Divergent Nozzle Using an Unstructured Finite Volume Algorithm
作者:
T. T. BUI,
R. R. MANKBADI,
期刊:
International Journal of Computational Fluid Dynamics
(Taylor Available online 1998)
卷期:
Volume 10,
issue 4
页码: 281-289
ISSN:1061-8562
年代: 1998
DOI:10.1080/10618569808961691
出版商: Taylor & Francis Group
关键词: Computational aeroacoustics;unstructured finite volume methods;Roe flux difference splitting;MacCormack time marching;nozzles
数据来源: Taylor
摘要:
Numerical simulations of a very small amplitude acoustic wave interacting with a shock wave in a quasi-ID convergent-divergent nozzle is performed using an unstructured finite volume algorithm with piece-wise linear, least square reconstruction, Roe flux difference splitting, and second-order MacCormack time marching. First, the spatial accuracy of the algorithm is evaluated for steady flows with and without the normal shock by running the simulation with a sequence of successively finer meshes. Then the accuracy of the Roe flux difference splitting near the sonic transition point is examined for different reconstruction schemes. Finally, the unsteady numerical solutions with the acoustic perturbation are presented and compared with linear theory results.
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