Constitutive Relationships for Fluid-Solid Mixtures
Constitutive Relationships for Fluid-Solid Mixtures
复制标题
流固混合物的本构关系
DOI：
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发表时间：
1982
期刊：
影响因子：
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通讯作者：
N. Ackermann
中科院分区：
文献类型：
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作者：
H. Shen;N. Ackermann
本文推导了流体中颗粒状固体形成的混合物的快速剪切流动的本构方程。混合物中的应力状态被认为是由碰撞固体之间的动量交换产生的。本构方程描述了剪切应力和正应力作为速度梯度、固体的摩擦和恢复系数、颗粒形状的流体阻力系数以及固体和流体成分的密度的函数。理论计算结果与大量实验结果吻合较好。
Constitutive equations are derived for the rapid shear flow of a mixture formed from granular solids in a fluid. The stress state within the mixture is considered to be created by the momentum exchange between colliding solids. The constitutive equations describe the shear and normal stresses as a function of the velocity gradient, friction and restitution coefficients of the solids, the fluid drag coefficient for the particle shape and the density of the solid and fluid constituents. The theoretical results agree well with the results obtained from numerous laboratory experiments.