Research of the effect of non-spherical particle on the drag force had been carried out using numerical method. At Re<100, the flow over three different non-spherical particle (cube, cylinder and frustum) had been calculated with N-S equations. In particular, the performance of three promising correlations for the drag coefficient of the non-spherical particle had been critically examined with the computational results. The best method appears to be that of Ganser which uses the equal volume sphere diameter and sphericity of particle. Comparing the results obtained by two different cylinder’s arrangement, the axis of cylinder perpendicular to the coming flow direction and parallel to that, the divergence between them is very obvious.

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