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A stability analysis of flow between two coaxial rotating cylinders in the presence of fibers was performed. Based on the axisymmetric normal mode for the disturbances, a modified stability equation was derived. Then the numerical solution of the eigenvalue problem about the equation was obtained using the fo urth order finite difference scheme. The marginal curves that determine the inst ability property were drawn. The results show that the flow instability of the d ilute fiber suspensions is governed by the aspect ratio of fiber H, the incr ement of H causes an increase of critical inner Reynolds number. The fiber a dditives effectively attenuate the instability of the flow, which is in agreemen t with those of related experiments.
A stability analysis of flow between two coaxial rotating cylinders in the presence of fibers was performed. Then the numerical solution of the eigenvalue problem about the equation was derived using The results show that the flow instability of the d ilute fiber suspensions is governed by the aspect ratio of fiber H, the incr ement of H causes an increase of critical inner Reynolds number. The fiber a dditives effectively attenuate the instability of the flow, which is in agreemen t with those of relevant experiments.