Structure simulation analysis of the underwater vehicle thermal jet at discharge multiport

Inhalt:
The circulating cooling water of the underwater vehicle power system discharge from the discharge port, mix with the environmental water for heat exchange and form the thermal jet. The thermal jet diffuses and floats in the environmental water and forms infrared characteristics on the surface of the water. In order to explore the influence of the structure of the discharge port on the infrared characteristics of the underwater vehicle thermal jet, this paper uses the method of simulation analysis. Based on the CFD calculation software platform, the motion model of underwater vehicle is established, the number and distribution position of discharge ports are designed to compare the infrared characteristics of thermal jet, suppress the infrared characteristics of thermal jet and improve the thermal stealth performance of underwater vehicle. According to the simulation calculation results, under the condition of the same discharge flow, increasing the number of discharge ports and adopting the symmetrical arrangement of discharge ports can further strengthen the temperature attenuation of thermal jet and reduce the surface maximum temperature.