载人航天器密封舱流动和传热数值模型及其地面验证

摘要

In order to solve the complex heat lransfer problem coupled with air flow, solid conduction and radiacion in a manned spacecraft pressurized cabin, a numerical model of flow and heat transfer for the manned spacecraft pressurized cabin is built. The simulation and analysis of air flow and heat transfer are performed under ground test conditions, and the numerical model is suhsequently validated by test results. The results indicate that the numerical model is reliable wiih a high fidelity, and the simulation results using this model are found to highly agree with the ground test data, which could be further used for performance assessment of thermal control system( TCS) , orbit support and failure management.%为求解载人航天器密封舱内复杂的空气对流、导热和辐射三者耦合的传热问题,本文建立了载人航天器密封舱的流动与传热数值模型,对地面试验状态下密封舱内的空气流动与传热进行了仿真分析,并利用试验结果对数值模型进行了验证.结果表明,建立的数值模型可靠且具有较高精度,仿真结果与地面试验数据吻合性较好,可进一步用于热控系统性能评估、在轨支持和故障处理.