摘要
采用计算流体力学软件Fluent对10组不同壁面边界温度情况的谐振管的形状参数m=2.2型指数管内二维非线性声场进行了模拟研究,探索了壁面边界温度对指数管内声场的影响。研究分析了不同壁面边界温度下管内声压和压比的变化规律,发现管内声压最大和压比最大的情况分别出现在不同的壁面边界温度条件下,但当上、下壁面边界温度均为328K时,指数管封闭端能同时获得较大声压幅值和压比。
The two-dimensional nonlinear acoustic field of exponential shaped resonator of m=2.2in the cases of ten group different boundary wall temperature was simulated with a computational fluid dynamics software Fluent,and the influences of wall boundary temperature on acoustic field was also explored.The changing rule of the sound pressure and pressure ratio in resonator under different boundary wall temperature was analyzed.It is found that the maximum pressure ratio and sound pressure were obtained in the different wall boundary temperature.However,greater sound pressure amplitude and pressure ratio in close end of exponential shaped resonator were gained when the bottom and the top wall boundary temperatures are 328 K.
出处
《机械工程与自动化》
2016年第6期23-25,共3页
Mechanical Engineering & Automation
基金
国家自然科学基金资助项目(51405157
51476052)
湖南省教育厅项目(14C0433)
关键词
指数管
壁面边界温度
声压
压比
exponential shaped resonator
wall boundary temperature
sound pressure
pressure ratio
