关键词: 热学 , 流固 , 耦合 , 身管 , 温度场 , 仿真 , 冷却

Abstract: The barrel liquid-cooling technology is widely used in ground-based air-defense and anti-mis?sile small-caliber automatic gun and ship-borne medium or small caliber guns. It is important to study the temperature distribution of the barrel where liquid-cooling technology is used for gun lunching safe?ty and weapon efnciency. lakmg a certain kind of rapid-fire gun as researched object, a liquid-solid u- nitized mathematic model oi heat transfer was set up by a thermal-liquid-solid coupled method coupling solid region with liquid one separated in traditional calculation method of temperature field. The tran?sient temperature oi the barrel system, whose material properties is related to temperature, was calcu?lated by CFD method, meanwhile the velocity effects of cooling water on barrel temperature were also discussed. The study result shows that the water flow cooling method for the barrel has obviously fa?vorable effect on the outer-surface cooling, along the radial direction inward, the amplitude of temper?ature decreasing caused by water flow fades out gradually; the temperature of the thin cooling-water sheet near the barrel’s outer surface changes a lot; when the flow velocity near the entrance exceeds some value, the barrel temperature field decreases just a little by increasing the flow velocity.

Key words: thermology , liquid-solid , couple , barrel , temperature field , simulation , cooling