Rheology of dilute cohesive granular gases

被引:10
作者
Takada, Satoshi [1 ,2 ]
Hayakawa, Hisao [3 ]
机构
[1] Univ Tokyo, Earthquake Res Inst, Bunkyo Ku, 1-1-1 Yayoi, Tokyo 1130032, Japan
[2] Kyoto Univ, Dept Phys, Sakyo Ku, Kyoto 6068502, Japan
[3] Kyoto Univ, Yukawa Inst Theoret Phys, Sakyo Ku, Kitashirakawa Oiwakecho, Kyoto 6068502, Japan
基金
日本学术振兴会;
关键词
SIMPLE SHEAR FLOWS; LOW-DENSITY; HOMOGENEOUS-SHEAR; SOLID SUSPENSIONS; TRANSPORT; DYNAMICS; BEHAVIOR; GELATION; SPHERES; DRY;
D O I
10.1103/PhysRevE.97.042902
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
Rheology of a dilute cohesive granular gas is theoretically and numerically studied. The flow curve between the shear viscosity and the shear rate is derived from the inelastic Boltzmann equation for particles having square-well potentials in a simple shear flow. It is found that (i) the stable uniformly sheared state only exists above a critical shear rate and (ii) the viscosity in the uniformly sheared flow is almost identical to that for uniformly sheared flow of hard core granular particles. Below the critical shear rate, clusters grow with time, in which the viscosity can be approximated by that for the hard-core fluids if we replace the diameter of the particle by the mean diameter of clusters.
引用
收藏
页数:13
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