摘要
基于旋臂与机室中气体的力矩平衡关系,导出了离心机的电机输出的总机械能向热能的转化关系,分析、找出了利用文献中已有公式计算土工离心机的风阻功率时,计算值比实际值偏小的原因,建立了机室开有通风口的土工离心机的新的随流比方程和风阻功率公式。采用新建公式和文献中相关公式计算了一台已建成的机室开有通风口的土工离心机的风阻功率,将计算数据与实际数据进行对比,表明本文的新公式避免了以前计算公式中的不足,能够大幅度提高风阻功率的计算精度。
The calculated aerodynamic power by using formulas in references is always much less than the practical one,the reason for which was found through analyzing the transformation of mechanical energy output by the motor into heat energy of the whole system and motion energy of the air newly getting in based on the relations of moment equilibrium.New formula of aerodynamic power and equation of air following flow ratio were deduced for geotechnical centrifuges with holed chamber.The aerodynamic power of one constructed geotechnical centrifuge was computed by using different formulas and the results were compared with each other as well as the practical values,respectively.The comparison shows that the new formulas are much more accurate than the previous ones in references.
出处
《绵阳师范学院学报》
2010年第5期1-5,17,共6页
Journal of Mianyang Teachers＇ College
关键词
土工离心机
带通风口机室
风阻功率
随流比方程
geotechnical centrifuge
chamber with air holes
aerodynamic power
equation of air following flow ratio
