针对潜射导弹同心筒发射装置,建立了二维内流场模型,建模中将两相流问题简化为单纯的高速气体射流问题。计算表明,从导弹离筒速度和筒內行程等总体指标看,单相高速气体射流模型和VOF模型的计算结果相差不大;单相高速气体射流模型能够较准确地揭示出导弹水下发射装置内气体流动的细节;VOF模型计算工作量大,耗时长,而单相高速气体射流模型的计算工作量相对较小,计算速度快。简化模型研究水下发射内流场方法可行。

A two-dimensional model of interior flow was constructed for underwater missile concentric canister launcher (CCL). Two-phase flow problem was reduced to a simple high-speed gas jet. The numerical simulation indicates that the results such as the missile's velocity and displacement calculated with single-phase high-speed gas jet model and VOF model are not very different. The single phase high-speed gas jet model can give the flow details in the interior flow for underwater launched missile well and tru-ly. The simulation based on VOF model costs much more time than that based on single-phase high-speed gas jet model. A simple model of the interior flow for underwater launching is feasible.