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• W4387187614 endingPage "846" @default.
• W4387187614 startingPage "846" @default.
• W4387187614 abstract "A large amount of heat flux from aerodynamic heating acts on reusable spacecraft; thus, an accurate heat flux prediction around spacecraft reentry is essential for developing a high-performance reusable spacecraft. Although the approximate convective-heating equations can calculate the heat flux with high efficiency and sufficient fidelity, the heat flux should be evaluated over a thousand times for the entire trajectory in multidisciplinary analyses. For these reasons, it is necessary to develop an efficient method for calculating the heat flux for multidisciplinary analysis. In this paper, an efficient method for heat flux calculation that is adoptable by multidisciplinary analyses for hypersonic vehicles, such as spacecraft, is developed. Approximate convective-heating equations were adopted to relieve the computational cost of estimating the heat flux, and an adaptive time step method for heat flux calculations was developed to reduce the number of heat flux calculations required across the entire flight trajectory. A dynamic factor was introduced that adjusts the time step between each instance of the heat flux calculation. Since the time step using this factor could increase under low heat flux conditions, the number of heat flux calculations decreases by approximately one-tenth with over 90% accuracy. Therefore, the efficiency was improved with high accuracy using the adaptively-determined time step according to this dynamic factor." @default.
• W4387187614 created "2023-09-30" @default.
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• W4387187614 date "2023-09-28" @default.
• W4387187614 modified "2023-10-09" @default.
• W4387187614 title "Efficient Method for Heat Flux Calculations within Multidisciplinary Analyses of Hypersonic Vehicles" @default.
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• W4387187614 doi "https://doi.org/10.3390/aerospace10100846" @default.
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