水下航行体热尾流浮升数值预报方法研究

Research on Numerical Prediction Method of Thermal Wake Buoyancy of Underwater Vehicle

水下航行体在航行过程中排放的热尾流在一定的条件下能浮升至水面,形成明显不同于背景水体的红外特征。论文基于来流法,应用不同湍流模型对水下航行体热尾流浮升过程进行数值预报,分析湍流模型对热尾流浮升及其水面特征的影响,并与试验进行比较,建立了水下航行体热尾流浮升的数值预报方法。

Thermal wake discharged by an underwater vehicle during navigation can rise to the water surface at a given speed and other relevant conditions,forming infrared characteristics significantly different from the background,which can be used as important signals for detecting underwater vehicles.In this paper,different turbulence models are applied to predict thermal wake buoyancy of the underwater vehicle based on the incoming flow method,and effects of turbulence models on the thermal wake buoyancy and water surface characteristics are analyzed.After experimental verification,the numerical prediction method for the thermal wake buoyancy of the underwater vehicle is established.