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在低流速、常温、层流假定下,利用数值模拟方法,实现了大型航天器返回舱、轨道舱内流动与传热传质分析.模拟结果表明,冷凝干燥组件、净化通风组件、风扇、热控风机和其他仪器设备对航天器舱内空气流动具有不同的影响;通过分析空气流场对舱内温度、空气湿度、二氧化碳浓度的影响,探讨了评价流场的质量和能量输运作用;从总体角度提出,通过一定的布局,设计出具有环流的全局流场的同时,具有流动与扩散相协调的局部流场,建立了统一流场的设计新思路。
Under the conditions of low flow velocity, normal temperature and laminar flow, the numerical simulation method was used to analyze the flow and heat and mass transfer in the return capsule and orbital chamber of the large spacecraft.The simulation results show that the condensing and drying components, purifying ventilation components, fans and heat Controlled fans and other equipment have different effects on the air flow in the spacecraft cabin. By analyzing the influence of air flow field on the temperature, air humidity and carbon dioxide concentration in the cabin, the evaluation of the flow field quality and energy transport is discussed. From the overall point of view, we propose to design a global flow field with circulation and a local flow field that is coordinated with flow and diffusion through a certain layout, and establish a new design idea of unified flow field.