CAJ | 학술논문

为研究复杂腔体内航行体在出筒过程中的燃气流场和腔体内部压力建立情况，采用计算流体力学方法和动网格技术，对航行体出筒过程进行数值模拟。将安置在腔体内的航行体作为运动实体，随着航行体的运动，相应的流场计算边界发生变化。计算过程根据当前时刻喷管内流场及燃气流场计算航行体受力情况，确定航行体在任意计算时刻的运动速度，并由相应的运动边界更新网格，计算新网格下的流场参数分布。计算结果与实验结果符合较好，说明文中方法能够有效地揭示航行体出筒过程中燃气流的动力特性，通过分析这些流动现象，为工程应用提供有意义的参考。
위연구복잡강체내항행체재출통과정중적연기류장화강체내부압력건립정황，채용계산류체역학방법화동망격기술，대항행체출통과정진행수치모의。장안치재강체내적항행체작위운동실체，수착항행체적운동，상응적류장계산변계발생변화。계산과정근거당전시각분관내류장급연기류장계산항행체수력정황，학정항행체재임의계산시각적운동속도，병유상응적운동변계경신망격，계산신망격하적류장삼수분포。계산결과여실험결과부합교호，설명문중방법능구유효지게시항행체출통과정중연기류적동력특성，통과분석저사류동현상，위공정응용제공유의의적삼고。
In order to study the fuel gas flow field and the housing internal pressure establishment situation as a navigation body leaves a complex cavity , we use the computation hydromechanics method and the move grid tech-nology to numerically simulate the navigation body leving the tube .As the navigation body moves , the corre-sponding boundary changes in flow field calculation .Calculations according to the current nozzle flow field and gas flow field calculation of navigation body stress situation , determine navigation body on any computing time of the movement speed , and by the corresponding movement boundary renewal grid , calculates under the new grid the flow field parameter distribution .The computed result indicated that , the computed result and the experimen-tal result tally well , explained this article method can effectively promulgate the navigation body leave in the tube process the gas stream dynamic performance , through analyzes these phenomena of flow , To provide a meaningful reference for engineering application .