Fluid damping of cylindrical liquid storage tanks

被引：7

作者：

Habenberger, Joerg ^{[1
]}

机构：

[1] Basler & Hofmann AG, CH-8032 Zurich, Switzerland

来源：

SPRINGERPLUS | 2015年 / 4卷

基金：

美国国家科学基金会;

关键词：

Fluid damping; Earthquake; Cylindrical liquid storage tanks;

D O I：

10.1186/s40064-015-1302-2

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

A method is proposed in order to calculate the damping effects of viscous fluids in liquid storage tanks subjected to earthquakes. The potential equation of an ideal fluid can satisfy only the boundary conditions normal to the surface of the liquid. To satisfy also the tangential interaction conditions between liquid and tank wall and tank bottom, the potential flow is superimposed by a one-dimensional shear flow. The shear flow in this boundary layer yields to a decrease of the mechanical energy of the shell-liquid-system. A damping factor is derived from the mean value of the energy dissipation in time. Depending on shell geometry and fluid viscosity, modal damping ratios are calculated for the convective component.

引用

页数：11