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REPUBLIC OF SERBIA MINISTRY OF DEFENCE
MINISTRY OF DEFENCE Material Resources Sector Defensive Technologies Department
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PROJECT MANAGEMENT PUTTING TOGETHER THE MODEL AND EXPERIMENTAL RESULTS FOR TWO-PHASE FLUID FLOW IN THE SMALL-ARMS BY BOX-WILLSON'S METHOD
Military Academy, Belgrade, ljtancic@gmail.com
Abstract: The interior ballistics problem of firing process in the small arms is considered. A mathematical model of a so-called two-phase flow, which is described by gasdynamic partial differential equations system, is used, without deducing them. Partial differential equations system has been solved numerical by finite difference method. The initial parameters variations and their influence to the calculations results are factor analyzed and parameters, which influence the most on the changing of powder gasses maximum pressure and on velocity muzzle projectiles are chosen. For chosen parameters, dispersional and regressional analyses are carried out on which the derived polynomials, calculated average values of analyzed flow characteristics as well as allowed deviation limits are based. Comparative analysis of the calculation results with experimental research results is realized. One of the possible ways of result correction in experimental modeling by Box-Wilson's Method for gradual result approximation are given as a survey. Adequate reciprocal accordance of the results confirms the correctness of given two-phase flow model. Keywords: interior ballistic, firing process, initial parameters, dispersional and regressional analyses, Box-Wilson's method.
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