Calculation method of temperature distribution during level flight of high-altitude balloon with solar cells

Abstract

The present invention provides a method for computing a distributed temperature in level flight of a high altitude balloon with a solar cell. The method comprises the steps of: firstly, computing an atmosphere environment parameter and a high altitude balloon radiation thermal environment parameter, and establishing a high altitude balloon distributed temperature computation domain according to high altitude balloon geometric features and a heat transfer mode; then, discretizing the computation domain by using a structured grid, and establishing mass, momentum and energy differential equations for each micro cell; and finally, according to a balloon body material of the high altitude balloon and characteristic parameters of the solar cell, combining the differential equations and solving equation sets of all the micro cells in the computation domain, and computing the distributed temperature in the level flight of the high altitude balloon. The method provided by the present invention has guiding significance in structural design, material selection, flight test planning and potential hazard avoidance and the like of the high altitude balloon with the solar cell, can improve the primary success rate of design of the high altitude balloon with the solar cell, can shorten the design period of the high altitude balloon with the solar cell, and can lower the design cost of the high altitude balloon with the solar cell.

Description

technical field [0001] The invention belongs to the technical field of high-altitude balloon thermal control, and in particular relates to a method for calculating the distribution temperature of a high-altitude balloon with solar cells during level flight. Background technique [0002] High-altitude balloons have the advantages of fixed-point flight, long time in the air, and high resolution. They have broad application prospects in the fields of early warning, surveillance, and civil communications, and are highly valued by major powers in the world. [0003] During the level flight of high-altitude balloons, factors such as ambient temperature, density, pressure, wind speed, solar radiation, atmospheric radiation, and ground radiation will affect the temperature characteristics of high-altitude balloons. If the temperature is too high, it will increase the helium pressure inside the high-altitude balloon, which will have an important impact on the high-altitude balloon: 1...

AI Technical Summary

Problems solved by technology

If the temperature is too high, it will increase the helium pressure inside the high-altitude balloon, which will have an important impact on the high-altitude balloon: 1. If the temperature is too high, it will change the load-bearing characteristics of the high-altitude balloon material, increase the thermal stress of the high-altitude balloon, and increase the tension of the high-altitude balloon. The safety of the high-altitude balloon sphere poses a serious threat; 2. Changing the force status of the high-altitude balloon will cause the flight height of the high-altitude balloon to fluctuate and interfere with the high-altitude balloon's mission

Therefore, accurate knowledge of the temperature characteristics of high-altitude balloons during level flight is of great significance for high-altitude balloon structure design, material selection, flight test planning, and potential hazard avoidance. Calculation Method of Distribution Temperature of Balloon in Level Flight

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