Numerical simulation of inelastic frictional spheres in simple shear flow Export

@article{lun1994, abstract = {A numerical program is developed to simulate an assembly of inelastic frictional spheres inside a control volume undergoing rapid shearing motion induced by the top and bottom moving periodic boundaries. A sticking–sliding collision model is used to emulate binary collisions of real particles. After the flow has reached a steady state, ensemble averages of macroscopic properties such as translational and rotational granular temperatures, and kinetic and collisional stresses at different solids concentrations are obtained. The present results are compared with previous theoretical, numerical and experimental works, and favourable agreement is found among them. The simulation results show that the stresses are anisotropic and decrease with decreasing coefficient of restitution and increasing friction coefficient. At high solids fraction, above about 0.5, there exists a critical concentration where the layering effects of particles, the formation of high-density microstructures and the increase in correlation of particle velocities are the major causes of abrupt changes in flow properties.}, author = {Lun, C. K. K. and Bent, A. A.}, citeulike-article-id = {2516560}, citeulike-linkout-0 = {http://journals.cambridge.org/action/displayAbstract?aid=357099}, journal = {Journal of Fluid Mechanics}, keywords = {chute\_flow, grain, grain\_flow, granular, granular\_flow, granular\_temperature, incline, kinetic\_theory, shear\_flow}, pages = {335--353}, posted-at = {2008-03-11 20:40:50}, priority = {2}, title = {Numerical simulation of inelastic frictional spheres in simple shear flow}, url = {http://journals.cambridge.org/action/displayAbstract?aid=357099}, volume = {258}, year = {1994} }

TY - JOUR ID - lun1994 L3 - citeulike-article-id:2516560 N2 - A numerical program is developed to simulate an assembly of inelastic frictional spheres inside a control volume undergoing rapid shearing motion induced by the top and bottom moving periodic boundaries. A sticking–sliding collision model is used to emulate binary collisions of real particles. After the flow has reached a steady state, ensemble averages of macroscopic properties such as translational and rotational granular temperatures, and kinetic and collisional stresses at different solids concentrations are obtained. The present results are compared with previous theoretical, numerical and experimental works, and favourable agreement is found among them. The simulation results show that the stresses are anisotropic and decrease with decreasing coefficient of restitution and increasing friction coefficient. At high solids fraction, above about 0.5, there exists a critical concentration where the layering effects of particles, the formation of high-density microstructures and the increase in correlation of particle velocities are the major causes of abrupt changes in flow properties. JF - Journal of Fluid Mechanics EP - 353 TI - Numerical simulation of inelastic frictional spheres in simple shear flow VL - 258 SP - 335 KW - chute_flow KW - grain KW - grain_flow KW - granular KW - granular_flow KW - granular_temperature KW - incline KW - kinetic_theory KW - shear_flow AU - Lun, CKK AU - Bent, AA PY - 1994/// UR - http://journals.cambridge.org/action/displayAbstract?aid=357099 ER -