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阐述了中国民机产业发展中存在的主要声学问题，提出了中国民机声学与噪声专业研究发展规划。The ma in problem of aeroacoustics to be solved for civil airplane is introduced in this paper.

最终证明了谱元方法求解计算气动声学问题的可行性。Finally the feasibility of spectral element methods for Computational Aeroacoustics is verified.

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为方便后面声场的计算和对称边界条件的实施，选用重叠网格。Overlap grid is selected for helping calculate aeroacoustics following and apply symmetrical boundary condition.

采用计算气动声学方法研究了管道近音速区的声传播和声波与激波的相互作用问题。A computational aeroacoustics approach is applied to studying sound propagation in subsonic and supersonic nozzle.

采用计算气动声学方法求解二维线化欧拉方程对阵风与叶栅的干涉噪声进行了数值模拟。The gust-cascade interaction noise was numerically simulated using computational aeroacoustics by solving the two-dimensional linearized Euler equations.

介绍了有限体积数值方法，该方法适用于在任意非结构网格上求解线性和非线性的航空声学问题。The paper presents a finite volume numerical method universally applicable for solving both linear and nonlinear aeroacoustics problems on arbitrary unstructured meshes.

谱元方法具有高精度和良好的边界适应性，将其引入计算气动声学问题中很有发展潜力。The spectral element methods has the properties of finite element methods and the accuracy of spectral methods, Applying this method to Computational Aeroacoustics is promising.

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从理论上分析了数值伪波产生的原因，要消除数值伪波可用滤波方法。In this article spurious waves introduced in the computation of aeroacoustics are analyzed theoretically and filters are proposed to attenuate these waves as soon as they are generated.

风洞中心项目主要包括国内首座汽车气动声学整车风洞和国内首座有完整气候模拟功能的热环境风洞。Wind Tunnel Center project includes China's first car aeroacoustics wind tunnel and China's first vehicle with a full climate simulation capabilities of the thermal environment wind tunnel.

用数值的方法，研究了剪切流中的压力扰动产生的气动声学问题，以及剪切层的存在对扰动波传播的影响。In this paper, aeroacoustics in shear flows is studied with the new boundary conditions using numerical simulation method and the effect of shear flows for radiation of disturbance is also studied.