摘要
应用声边界无理论建立了内燃机辐射声场三维计算模型，开发了计算程序。利用复式声强测量得到的空间粒子速度分布作为已知边界条件计算了L195柴油机标定工况的辐射声功率及其辐射声场分布。试验结果表明，本内燃机辐射噪声计算模型和计算程序准确可靠。声边界元方法是内燃机辐射声场计算的一种有效方法，为低噪声内燃机设计奠定了基础。
A 3-D engine ladiating acoustic field medel was set up based on the Boundary Element Method. The corresponding computing program was developed.The emitted sound power and the ladiating acoustic field of model L195 diesel engine at rated operating condition was calculated using the spatial particle velocity measured with complex acoustic intensity system. The test results show that the computing model and compu ting program is reliable and accurate. A coustic Boundary Element Method is a powerful tool for engine radiating acoustic field calculation. It's the foundation of low noise engine design.
出处
《内燃机工程》
EI
CAS
CSCD
北大核心
1994年第4期19-23,共5页
Chinese Internal Combustion Engine Engineering
