| DCS5在计算气动声学中的应用研究 |
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| 引用本文： | 姜屹,毛枚良,邓小刚.DCS5在计算气动声学中的应用研究[J].空气动力学学报,2012,30(4):431-436. |
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| 作者姓名： | 姜屹 毛枚良 邓小刚 |
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| 作者单位： | 1. 国家空气动力学重点实验室,四川绵阳621000;中国空气动力研究与发展中心,四川绵阳621000
2. 国家空气动力学重点实验室,四川绵阳,621000 |
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| 基金项目： | 国家重点基础研究发展计划，空气动力学国家重点实验室基金资助 |
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| 摘 要： | 对流项采用五阶线性耗散紧致格式(DCS5)离散,粘性项采用6阶中心紧致格式离散,时间项采用5级5阶龙格-库塔时间推进格式求解流体动力学方程组,并由此建立近声场的直接模拟方法。为了应用结构网格在复杂几何形状条件下对流场进行计算,发展了高精度的多块特征对接边界技术。完成了低速无粘振荡圆柱和粘性圆柱绕流等标准计算声学算例,获得了令人满意的结果。
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| 关 键 词： | 计算气动声学 分区网格 耗散紧致格式 特征边界条件 |
Application of DCS5 Scheme in CAA |
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| JIANG Yi
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MAO Mei-liang
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DENG Xiao-gang.Application of DCS5 Scheme in CAA[J].Acta Aerodynamica Sinica,2012,30(4):431-436. |
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| Authors: | JIANG Yi MAO Mei-liang DENG Xiao-gang |
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| Institution: | 1(1.State Key Laboratory of Aerodynamics,Mianyang Sichuan 621000,China; 2.China Aerodynamics Research and Development Center,Mianyang Sichuan 621000,China) |
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| Abstract: | The methodology of simulating near-field acoustic is proposed by solving Navier-Stokes equations using fifth order dissipative compact finite difference scheme(DCS5) for convection flux,sixth order central compact finite difference scheme(CCS-6) for viscous flux and the five stage Runge-kutta time integration scheme.Characteristic interface condition is used to solver N-S equations with complex geometries.The efficiency of DCS5 and the characteristic boundary condition has been demonstrated by their applications to CAA Benchmark solutions for the problems of inviscid and viscous flow over a circular cylinder. |
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| Keywords: | computational aeroacoustics(CAA) multi-block dissipative compact scheme(DCS) characteristic boundary condition |
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