Aim of the present contribution is the study of drag reduction (DR) in rodlike polymers by means of Direct Numerical Simulations. Even if in the past a number of investigators have tried to explain DR via the role of elasticity in flexible polymers, it is interesting to point out that non-Brownian fibres, that have no elasticity, can achieve significant reduction of the friction coefficient. The results we will discuss are obtained by using a model, already discussed in [1], which is an appropriate limit of the rodlike polymer ones.
Drag reduction by non-Brownian rodlike particles in a channel flow
DE ANGELIS, ELISABETTA;
2007
Abstract
Aim of the present contribution is the study of drag reduction (DR) in rodlike polymers by means of Direct Numerical Simulations. Even if in the past a number of investigators have tried to explain DR via the role of elasticity in flexible polymers, it is interesting to point out that non-Brownian fibres, that have no elasticity, can achieve significant reduction of the friction coefficient. The results we will discuss are obtained by using a model, already discussed in [1], which is an appropriate limit of the rodlike polymer ones.File in questo prodotto:
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