【作者】 李帅军； 柳贡民； 吴晓迪； 赵晓臣； 胡国安；

【Author】 Li Shuaijun;Liu Gongmin;Wu Xiaodi;Zhao Xiaochen;Hu Guoan;

【机构】 哈尔滨工程大学动力与能源工程学院；

【摘要】 考虑流体的科氏力、离心力以及迁移力,导出直管14方程的流固耦合模型,建立不同边界条件的传递矩阵。通过改变流体边界条件,分析了管内压力波的传递特性及变化规律。结果表明,由于流固耦合的作用,管内压力波频域响应增强,且即使流体在透射边界时,弹性管内亦会出现一定的驻波;当管道末端为软边界时,末端特性阻抗越小,频域响应幅值越大,而当管道末端为硬边界时,末端特性阻抗越大,频域响应幅值也越大,且在"绝对硬"边界时频域响应达到最大值。更多还原

【Abstract】 Considering the Coriolis force,Centrifugal force and migration force,a 14-equations model of fluid-structure interaction is established.And the transfer matrix algorithm for the fluid pressure wave with complex boundary condition is also established.Furthermore,the influence laws and characteristics of boundary condition on the pressure wave transmission characteristics and dynamic response are analyzed and summarized in detail.It is found that the pressure wave resonance peaks are increased and the "standing wave" phenomenon occurs even on non-reflected boundary condition due to FSI.When the end boundary condition is soft,the softer boundary condition is,the bigger frequency response is.But when the end boundary condition is hard,the harder boundary condition is,the bigger frequency response is,and the pressure frequency response achieves maximum in rigid boundary.更多还原