Fast calculations of screech using highly accurate multioperators-based schemes

A.I. Tolstykh; D.A. Shirobokov

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Fast calculations of screech using highly accurate multioperators-based schemes

机译：使用基于高精度多操作员的方案快速计算尖叫声

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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 multioper-ators 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.

机译：简要概述了基于多操作员的计算航空声学方案，这些方案具有很高的阶数和良好的分辨率特性。测试了用于Navier-Stokes方程的七阶和九阶多算子优化方案，并将其应用于2D尖叫声问题。产生清晰的鱼雷波产生和传播的图片，而计算量却很少。计算结果显示与实验数据一致。发现基于所获得的流场和声场的可视化的尖叫声场景符合冲击泄漏理论。

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来源
《Applied Acoustics》 |2013年第1期|102-109|共8页
作者
A.I. Tolstykh; D.A. Shirobokov;
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作者单位

Computing Center of Russian Academy of Sciences, CSP-1, Vavilova Str. 40, 119333 Moscow, Russia;

Computing Center of Russian Academy of Sciences, CSP-1, Vavilova Str. 40, 119333 Moscow, Russia;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
high-order multioperators; optimized schemes for aeroacoustics; navier-stokes equations; underexpanded jets; direct screech numerical simulation;

机译：高阶多操作员;优化的航空声学方案;航海斯托克斯方程;射流不足;直接尖叫声数值模拟;

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Fast calculations of screech using highly accurate multioperators-based schemes

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