Fast calculations of screech using highly accurate multioperators-based schemes

被引：13
|
作者：
Tolstykh, A. I. [1 ]
Shirobokov, D. A. [1 ]
机构：
[1] Russian Acad Sci, Ctr Comp, Moscow 119333, Russia
来源：
APPLIED ACOUSTICS | 2013年 / 74卷 / 01期
基金：
俄罗斯基础研究基金会;
关键词：
High-order multioperators; Optimized schemes for aeroacoustics; Navier-Stokes equations; Underexpanded jets; Direct screech numerical simulation; PARALLEL CALCULATIONS; APPROXIMATIONS;
D O I：
10.1016/j.apacoust.2012.06.013
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
Brief outlines of the multioperators-based schemes for computational aeroacoustics characterized by very high orders and good resolution properties are presented. The seventh- and ninth-order multioperators optimized schemes for the Navier-Stokes equations are tested and applied to the 2D screech problem. Clear pictures of screech waves generation and propagation obtained with modest computational expenses are produced. The results of the calculations are shown to agree satisfactory with the experimental data. The scenario of screech generation based on the visualizations of the obtained flow and acoustic fields was found to conform with the shock leakage theory. (C) 2012 Elsevier Ltd. All rights reserved.
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页码：102 / 109
页数：8
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