哈尔滨商业大学学报(自然科学版)
哈爾濱商業大學學報(自然科學版)
합이빈상업대학학보(자연과학판)
JOURNAL OF HARBIN UNIVERSITY OF COMMERCE(NATURAL SCIENCES EDITION)
2010年
4期
449-454
,共6页
闵景新%权小波%魏英杰%王聪%邹振祝
閔景新%權小波%魏英傑%王聰%鄒振祝
민경신%권소파%위영걸%왕총%추진축
流体力学%潜射弹道导弹%出筒%空泡%稳定性
流體力學%潛射彈道導彈%齣筒%空泡%穩定性
류체역학%잠사탄도도탄%출통%공포%은정성
fluid mechanics%submarine-launched ballistic missile%tube-exit%cavity%stability
采用数值方法对潜射弹道导弹带均压气体出筒非稳态空泡流进行了研究.基于连续性方程,动量方程,理想气体状态方程,均质平衡流空泡模型和Realizable k-ε湍流方程,并结合动网格技术,实现了潜射导弹带均压气体出筒过程数值求解.得到了出筒空泡的演化规律、形态特征和内部结构,分析了出筒加速度对空泡内部组的影响,提出了判定出筒空泡的稳定性依据,并与文献中的理论分析结果进行了对比验证.研究结果表明,出筒空泡组成是一个由以气相为主向以水蒸汽相为主的转变过程;出筒空泡的稳定性与气体的弹性系数β密切相关,当1≤β≤2.645时,空泡是稳定的,而当β≤2.645时,空泡将失稳.
採用數值方法對潛射彈道導彈帶均壓氣體齣筒非穩態空泡流進行瞭研究.基于連續性方程,動量方程,理想氣體狀態方程,均質平衡流空泡模型和Realizable k-ε湍流方程,併結閤動網格技術,實現瞭潛射導彈帶均壓氣體齣筒過程數值求解.得到瞭齣筒空泡的縯化規律、形態特徵和內部結構,分析瞭齣筒加速度對空泡內部組的影響,提齣瞭判定齣筒空泡的穩定性依據,併與文獻中的理論分析結果進行瞭對比驗證.研究結果錶明,齣筒空泡組成是一箇由以氣相為主嚮以水蒸汽相為主的轉變過程;齣筒空泡的穩定性與氣體的彈性繫數β密切相關,噹1≤β≤2.645時,空泡是穩定的,而噹β≤2.645時,空泡將失穩.
채용수치방법대잠사탄도도탄대균압기체출통비은태공포류진행료연구.기우련속성방정,동량방정,이상기체상태방정,균질평형류공포모형화Realizable k-ε단류방정,병결합동망격기술,실현료잠사도탄대균압기체출통과정수치구해.득도료출통공포적연화규률、형태특정화내부결구,분석료출통가속도대공포내부조적영향,제출료판정출통공포적은정성의거,병여문헌중적이론분석결과진행료대비험증.연구결과표명,출통공포조성시일개유이기상위주향이수증기상위주적전변과정;출통공포적은정성여기체적탄성계수β밀절상관,당1≤β≤2.645시,공포시은정적,이당β≤2.645시,공포장실은.
The unsteady cavitating flow during the SLBM (Submarine-launched ballistic missile) ejected with the even pressure gas in the launch tube was studied using numerical simulation. The ejection process was simulated based on the continuity equation, momentum equation, ideal gas state equation, homogeneous equilibrium flow cavitation model, Realizable k-ε equation combined with the dynamic mesh. This paper studied the evolution rule, shape characteristics and inner structure of the tube-exit cavity, the influence of the even pressure gas on the stainner compositions of the cavity was analyzed, and the basis for judging the stability of cavity was put forward, compared and validated with the with the theoretical analysis result which has been given in the literature. The numerical results show that the unsteady tube-exit cavity main composition changes from gasous to vapor. The stability of the tube-exit cavity mainly determined by the dimensionless parameter, when 1≤β≤2.645, the cavity is stable and unstable when β≤2.645.