Numerical modeling of the self-oscillation onset near a three-dimensional backward-facing step in a transonic flow

被引：0
作者：
B. N. Dan’kov
A. P. Duben’
T. K. Kozubskaya
机构：
[1] Peter the Great Saint-Petersburg Polytechnic University,
[2] Keldysh Institute of Applied Mathematics,undefined
[3] Central Research Institute of Mechanical Engineering (TSNIIMASH),undefined
来源：
Fluid Dynamics | 2016年 / 51卷
关键词：
backward-facing step; cavity; turbulence; self-oscillations; numerical modeling; hybrid RANS-LES method; IDDES method; unstructured grids;
D O I：
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中图分类号：
学科分类号：
摘要：
The results of a numerical investigation of the nature of self-oscillation processes occurring in transonic flow past a backward-facing step and a cavity with a flow of the open type are presented. The turbulent flow past the above-mentioned bodies is modeled using the NOISEtte software package intended for solving problems of aerodynamics and aeroacoustics on unstructured grids. The modeling is performed using the eddy-resolving IDDES method that belongs to the class of hybrid RANS-LES approaches. The adequacy of the calculations is confirmed by means of comparing the results obtained with the available experimental data. The structure and the salient features of the self-oscillatory, hydrodynamic-in-nature process, which arises in flow past a cavity and a backward-facing step, are established.
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页码：534 / 543
页数：9
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