摘要
根据计算流体动力学理论建立了水下航行器排出冷却水形成热尾流的浮升规律的数学模型,采用有限体积法来离散求解三维湍流数学模型,对水下航行器排出热尾流的浮升特性进行了数值计算分析,得到了热尾流轨迹和热尾流温度场分布图像,将热尾流的试验结果与理论数值模拟结果进行比较,验证了模型的正确性。文中建立的水下航行器排放冷却水浮升模型可预测热尾流的温度分布特性和预先估计海面温度场分布状况,为红外探潜提供了理论依据。
According to the theory of computational fluid dynamics, the buoyant rule mathematical model of the cooling water discharged by underwater vehicle is established.The buoyant characteristic of the thermal wake is calculated with numerical analysis by finite volume method,also the thermal trail and the surface temperature profile are obtained.Comparing the results of experiments with the theoretic results, the validity of the model is proved.The temperature characteristic of the thermal wake and the surface temperature profile are predicted on the basis of the buoyant model of the cooling water discharged by underwater vehicle, so theoretic bases are provided for the infrared detection of submarines.
出处
《船舶力学》
EI
北大核心
2009年第4期533-539,共7页
Journal of Ship Mechanics
关键词
红外探测
热尾流
浮力射流
水下航行器
infrared detection
thermal wake
buoyant jet
underwater vehicle
