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Two-Dimensional Simulation of the Angle of Repose for a Particle System with Electrostatic Charge under Lunar and Earth Gravity
Publisher: American Society of Civil Engineers
Abstract: This paper presents a study of the angle of repose of a two-dimensional particle system under the Earth and Moon gravity fields. The particles interact with electrostatic forces in addition to friction. A two-dimensional ...
Effect of Contact Force Models on Granular Flow Dynamics
Publisher: American Society of Civil Engineers
Abstract: The contact force model consisting of a linear spring dashpot with a frictional glider has been widely adapted to simulate granular flows. Real contact mechanics between two solid bodies is very complicated. Extensive ...
Theoretical Study of Drift of Small Rigid Floating Objects in Wave Fields
Publisher: American Society of Civil Engineers
Abstract: Small floating objects do not alter the ocean wave characteristics. They are passively driven by waves. This is a theoretical study of the drift pattern of a small floating object in a monochromatic wave field. Small ...
Collisional Restitution Dependence on Viscosity
Publisher: American Society of Civil Engineers
Abstract: Dense two‐phase flows occur in many material processing situations. In these flows, particle collision presents a mechanism for internal resistance. In the literature, restitution coefficients are given for collisions ...
Simple Mean Free Path Theory for Stresses in a Rapid Granular Flow
Publisher: American Society of Civil Engineers
Abstract: Kinetic stress for a rapidly deforming granular material is first derived. The derivation uses a simple velocity distribution model together with a mean free path concept. Complete stresses including the collisional stresses ...
Nature of Wave Modes in a Coupled Viscoelastic Layer over Water
Publisher: American Society of Civil Engineers
Abstract: A theoretical study of wave modes in a system of layered materials is presented. The system consists of a floating linear viscoelastic layer over inviscid water. The viscoelastic cover is assumed to obey the Voigt constitutive ...
Wave-Ice Interactions in Barents Sea Marginal Ice Zone
Publisher: American Society of Civil Engineers
Abstract: The motion of two ice floes in a wave field were simultaneously measured with two six degree of freedom instruments in the Barents Sea Marginal Ice Zone. The heave motion amplitude was used to interpret the wave amplitude. ...
Experimental and Numerical Studies of Shear Layers in Granular Shear Cell
Publisher: American Society of Civil Engineers
Abstract: The stability of a shear layer inside a granular material in a gravity field is studied experimentally and numerically. A shear cell is built of transparent acrylic to visualize the motion of the granular material. This ...
Collisional Stress in Granular Flows: Bagnold Revisited
Publisher: American Society of Civil Engineers
Abstract: A formulation by Bagnold for the constitutive relations in dense, rapidly sheared granular flows is reexamined in light of more recent developments based on the kinetic theory of dense gases. Bagnold's formulation expressed ...
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