Particle-wall interaction in a viscoelastic fluid
نویسندگان
چکیده
In this work, particle-wall interaction in viscoelastic fluids is experimentally studied. The effect of Stokes number, Weissenberg number and surface roughness on the rebound velocity of a colliding spherical particle on a wall is considered. Different steel spherical particles are released in viscoelastic solutions of different high-molecular-weight polymers in water with different concentration, and the coefficient of restitution is calculated for particle-wall collision. The critical Stokes number at which no rebound occurs is studied for different Weissenberg number.
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