Abstract
A series of multiphase CFD (computational fluid dynamics) simulation was carried out in order to evaluate the design study of flushing device of rock reaming machine. The Star-CCM+ code was adopted for simulating rock particle discharge flow of flushing air during the rock reaming process. The input parameters for the flow simulation of rock particle were obtained from a previously performed in-situ drilling test results. After three design factors (degree of swash plate, radius of curvature of swash plate, and diameter of flushing channel) were determined, the experimental design method (response surface methodology) was applied to determine optimum value of each factor.
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