无线电工程
無線電工程
무선전공정
RADIO ENGINEERING OF CHINA
2014年
11期
59-62
,共4页
高速水下航行体%尾气团%运动参数
高速水下航行體%尾氣糰%運動參數
고속수하항행체%미기단%운동삼수
high-speed underwater vehicle%tail gas bubble%vehicle motion parameters
为研究航行体尾部流场特性，利用Rayleigh方程，建立了水下高速航行体尾部气团发展过程模型，分析了尾部气团半径与压力之间的变化关系，通过建立尾部气团方程与航行体运动方程的耦合求解，讨论了尾部气团变化对航行体运动参数的影响。结果表明，数值模拟计算结果与试验测量结果吻合较好。不同的工况条件下，航行体尾部压力均呈现明显的周期性振荡现象。随着初始压力的提高，尾部压力脉动周期逐渐变长，振荡幅值逐渐变小。初始余压越高，其初始运动的加速度越大，但具有加速度衰减的显著特征。
為研究航行體尾部流場特性，利用Rayleigh方程，建立瞭水下高速航行體尾部氣糰髮展過程模型，分析瞭尾部氣糰半徑與壓力之間的變化關繫，通過建立尾部氣糰方程與航行體運動方程的耦閤求解，討論瞭尾部氣糰變化對航行體運動參數的影響。結果錶明，數值模擬計算結果與試驗測量結果吻閤較好。不同的工況條件下，航行體尾部壓力均呈現明顯的週期性振盪現象。隨著初始壓力的提高，尾部壓力脈動週期逐漸變長，振盪幅值逐漸變小。初始餘壓越高，其初始運動的加速度越大，但具有加速度衰減的顯著特徵。
위연구항행체미부류장특성，이용Rayleigh방정，건립료수하고속항행체미부기단발전과정모형，분석료미부기단반경여압력지간적변화관계，통과건립미부기단방정여항행체운동방정적우합구해，토론료미부기단변화대항행체운동삼수적영향。결과표명，수치모의계산결과여시험측량결과문합교호。불동적공황조건하，항행체미부압력균정현명현적주기성진탕현상。수착초시압력적제고，미부압력맥동주기축점변장，진탕폭치축점변소。초시여압월고，기초시운동적가속도월대，단구유가속도쇠감적현저특정。
In order to study trailing flow performance of underwater vehicle,the model of the underwater vehicle tail gas bubble developing process is established by using Rayleigh equation. The interrelationship of tail gas bubble radius and pressure of is analyzed. The interaction equation between tail gas bubble change and vehicle motion parameters is studied by coupling equation of gas bubble and vehicle motion. The result shows that the simulation results agree with experimental results well,and that the change of environment pressure occurs under different work situations. The bigger initial pressure is,the longer oscillation period of vehicle tail pressure is. The bigger initial pressure is,the bigger initial acceleration is,but the acceleration is distinctly attenuated with time.
