摘要
采用积分方法求解相对平衡液体对壁面的铅直分力较为复杂,尤其是涉及抛物面方程时极易出错。教学中探讨发现,在求解静止液体作用力时提出的压力体几何作图方法,同样适用于相对平衡液体,其计算的理论基础和基本方法可与静止液体统一起来。这将积分计算转化为几何体积求解,在相对平衡液体的计算中更能发挥该方法的简便性优势。
The calculation of the vertical component force of the relative equilibrium liquid on the wall by the integral method is very complicated, especially when it involves a parabolic equation. It is found that the pressure body method by geometric drawing is not only suitable for the static liquid, but also suitable for the relative equilibrium liquid. The theoretical basis and the basic method of calculation can be adjusted for both liquids. In this way, the integral calculation is transformed into the solution of the geometric volume, which can make the calculation of the relative equilibrium liquid as simple as for the pressure body.
作者
顾磊
倪福生
GU Lei;NI Fusheng(Engineering Research Center of Dredging Technology of Ministry of Education,College of Mechanical and Electrical Engineering,Hohai University,Changzhou 213022,Jiangsu,China)
出处
《力学与实践》
北大核心
2021年第4期609-612,共4页
Mechanics in Engineering
基金
河海大学在线课程教改项目、核心课程建设项目资助。
关键词
相对平衡液体
压力体
铅直分力
流体静力学
relative equilibrium liquid
pressure body
vertical component force
hydrostatics
