可渗透圆柱壳流固耦合问题的流场与内力分析

在弹性薄壳的非线性理论和流体力学基本方程的基础上,研究了可渗透圆柱壳的流固耦合问题.假定壳体具有均布孔隙且孔的面积很小,不考虑其阻力,忽略对弯曲刚度和壳体腔内流体微小运动影响,应用相容欧拉--拉格朗日法建立了带孔的圆柱壳在流体中相互作用的基本方程.通过具体算例求解,给出了流场速度与压力的变化、圆柱壳的变形及内力分布,并对相关参数进行了讨论.

Flow Field and Internal Force in Penetrative Cylindrical Shell with Orifices

Based on the nonlinear theory of thin elastic shells and fundamental equations of the fluid mechanics,the formulas of fluid-solid interaction relation for a penetrative shell in fluid are established provided that orifices are too small to ignore the effects on the shell rigidity and the fluid action to the shell.The united Euler-Lagrange method is chosen to construct the equations for a slightly bending cylindrical shell with orifices.As an example,the deformation and the distribution of internal forces of the shell are evaluated,and the effects of the variety of concerned parameters are discussed.