本文研究了三维FW-H方程与CAA数值模拟匹配技术.首先验证了适于亚音任意运动声源的Farassat时域公式和适于亚音匀速直线运动声源的Lockard频域公式,采用均匀流中单极子源声辐射问题对两类公式进行了校核.进一步,采用FW-H/CAA匹配技术对风扇/压气机前传声进行了预测.近声场基于轴对称三维CAA方法获得,远声场则基于近声场数据采用三维可穿透FW-H方程时域公式进行预测,并校核算例着重分析了不同积分面对远场声指向性的影响.本文研究证实了FW-H/CAA数值模拟匹配技术的可行性和解决工程实际问题的潜力.
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