中文摘要：

针对贯流风扇气动噪声传播特性，采用基于非结构网格的CE／SE算法对其气动流场进行数值模拟，并模拟了气动噪声的传播。湍流模拟采用大涡模型，搭接式滑移网格模型处理动静干涉。噪声传播采用完全欧拉方程作为控制方程，远场采用无反射边界条件。将使用该方法得到的远场噪声频谱与实验数据进行对比分析，结果表明与实验测量得到宽带频谱不同，采用大涡模拟湍流模型进行声源模拟时，会加强部分离散频率上的声级，从而产生误差。

英文摘要：

based on the unstructured mesh space-time conservation element and solution element（CE/SE） scheme, a numerical simulation of flow and aeroacoustics of a cross-flow fan is performed. The flow and noise propagation characteristic is analyzed. Using the Navier-Stokes equations as the governing equations, The large eddy simulation（LES） model and sliding mesh model are used to simulate the flow. The aeroacosutics field is simulated by solving Euler equations and no-reflection boundary condition. Comparing the frequency-spectrum of a point located at the sound-far field with experiment＇s, some diversities are found at some discrete frequencies. The error is belong to the sound source simulation using the LES model.