A microchannel vapor phase change overload testing system and method

Abstract

The invention provides a microchannel steam phase change test system based on an overload condition. By means of the microchannel steam phase change overload test system, the flow states of fluid in the microscale evaporation phase change process under the overload condition are observed, the flow pattern flow states of the fluid microscale phase changes under different overload environments are analyzed, and the principle of microscale heat exchange is more deeply researched. According to the scheme, by improving a pressure source system and an overheat gas condensation collection system of an evaporation flow state observation system in an overload microchannel, the test system has overload resistance; an evaporator outlet segment vacuum degree control system is newly designed, the proper vacuum degree of an evaporator is guaranteed while the influence on the test system of a condensation recycling system is avoided, and it is guaranteed that test can be carried out effectively; by controlling the test system and the mounting angle of a tester, different overload environments are simulated, the flow states of the fluid in the microscale evaporation phase change process under the overload condition are obtained through a test observation system, the flow pattern flow states of the fluid microscale phase changes under different overload environments are analyzed, and the principle of the microscale heat exchange is more deeply researched.

Description

technical field [0001] The invention relates to a microchannel vapor phase change overload testing system and method. Background technique [0002] The ratio of the resultant force of the aerodynamic force and engine thrust acting on the aircraft to the gravity of the aircraft is called the aircraft's overload, and the overload that the aircraft can withstand is an important parameter to measure the maneuverability of the aircraft. The generation of overload is mainly due to the lift of the wings. When turning horizontally or turning somersaults, the lift generated by the wings is greater than the force of gravity; when the aircraft dives, or quickly climbs and flattens out, the lift generated by the wings is less than the force of gravity. In other words After the aircraft makes high maneuvers in flight, there will always be overload. The more intense the maneuvers, the greater the overload will be. Therefore, overload and even unfavorable high overload environments will in...

AI Technical Summary

Problems solved by technology

Although it has been studied by scholars that the micro-scale working fluid of the microchannel undergoes a new phase change in the heat transfer engineering under ground conditions, which affects the heat transfer efficiency, but the micro-scale working medium of the microchannel in the overload environment is in the heat exchange process. The change of new phases in thermal engineering, which affects the heat transfer efficiency, has become a concern of the industry.

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