Abstract We bave examined the trio-phase fiow of a gas with dispersed, nonspherical, rigid particles. We describe a model for the motion of a single ellipsoid in the fiuid, including the degrees of freedom associated with translation, lift, orientation and angular velocity. We assume there is no interaction between the particles, and give the Liouville equation for the distribution function of the particles. A computer code bas been developed to simulate the two-dimensional behavior of such a fiow. We demonstrate, in the case of a high-speed jet impinging on an obstacle, that the force exerted on the obstacle by the particles depends strongly on the eccentricity.
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