空气动力学学报
空氣動力學學報
공기동역학학보
ACTA AERODYNAMICA SINICA
2009年
z1期
90-94
,共5页
全自由飞数值模拟%三维粘性直角网格%运动边界%复杂物形
全自由飛數值模擬%三維粘性直角網格%運動邊界%複雜物形
전자유비수치모의%삼유점성직각망격%운동변계%복잡물형
numerical simulation of multi-body's free flight%3-D viscous cartesian grid%moving boundaries%complex configuration
以三维非结构粘性直角网格重构为构架,数值求解了固定空间网格瞬间运动边界的N-S方程,逼近了流场的非定常过程,结合六自由度的弹道方程,对单体或多体运动过程进行了全自由飞数值模拟,数值模拟结果和级间分离的风洞自由飞试验进行了对比,初步的计算结果说明,全自由飞数值模拟在一定程度上可以描述风洞试验的飞行轨迹,并且适应能力更强,整个全自由飞数值模拟系统可以为更复杂的单体机动飞行或多体运动过程提供快速实用的数值模拟方法.
以三維非結構粘性直角網格重構為構架,數值求解瞭固定空間網格瞬間運動邊界的N-S方程,逼近瞭流場的非定常過程,結閤六自由度的彈道方程,對單體或多體運動過程進行瞭全自由飛數值模擬,數值模擬結果和級間分離的風洞自由飛試驗進行瞭對比,初步的計算結果說明,全自由飛數值模擬在一定程度上可以描述風洞試驗的飛行軌跡,併且適應能力更彊,整箇全自由飛數值模擬繫統可以為更複雜的單體機動飛行或多體運動過程提供快速實用的數值模擬方法.
이삼유비결구점성직각망격중구위구가,수치구해료고정공간망격순간운동변계적N-S방정,핍근료류장적비정상과정,결합륙자유도적탄도방정,대단체혹다체운동과정진행료전자유비수치모의,수치모의결과화급간분리적풍동자유비시험진행료대비,초보적계산결과설명,전자유비수치모의재일정정도상가이묘술풍동시험적비행궤적,병차괄응능력경강,정개전자유비수치모의계통가이위경복잡적단체궤동비행혹다체운동과정제공쾌속실용적수치모의방법.
The time-dependent N-S equations at fixed grid and moving boundaries has been solved on the basis of 3-D unstructured viscous cartesian grid reconstruction technique.Coupled with 6-degree trajectory equations,monomer's and multi-body's motion have been analyzed.The simulation results have been validated by free flight test,and the results show that the flight pathway in wind tunnel test has been simulated by numerical method with better adaptability,and the numerical simulation system supply fast and utility approach for both monomer maneuver's and multi-body's motion.
