FRICTION COEFFICIENTS OF AXISYMMETRICAL PARTICLES IN SUSPENSION

We study the dynamics of an axisymmetric particle suspended in a fluid . The approach we use is based on the induced forces method. We then o btain formal expressions for the friction tensors from which one deriv es explicit formulas for the friction coefficients depending on the sh ape of the particle, valid in the long-particle limit. Some particular examples are under scrutiny namely, the case of particles of regular form and the influence of end effects and the roughness of the particl es in the dynamics. The first one serves to illustrate our method wher eas the second to manifest its applicability to open problems in the d ynamics of objects in suspension.