论文部分内容阅读
为实现空间对接试验系统的地面高低温环境模拟,建立了基于对接试验台不规则空间的数学物理模型,在此基础上进行CFD模拟计算,比较分析不同高低温送风工况下的温场和流场均匀性,对不同的送风工况进行了最优化选择。在结构和材料一定的情况下,影响温场及流场的最主要因素包括送风速度和送风温度,针对不同的流量和温差进行模拟分析和最优化选择,并对低温工况结合实际传热作进一步比较研究。模拟结果显示:送风速度为10 m/s时不规则空间的温场和流场均匀性最优,模拟温度均匀度可控制在2 K以内,压力在±5 Pa之间,与实际传热计算比较显示模型可很好地保证试验真实性,满足该不规则空间的温场和流场均匀性要求和试验环境要求。
In order to realize the simulation of ground high and low temperature environment in the docking test system, a mathematic and physical model based on the irregular space of the docking test bench was established. Based on this, the CFD simulation calculation was carried out. The temperature field under different high and low temperature air supply conditions Flow field uniformity, the best choice of different air conditions. In the case of certain structure and material, the main factors that affect the temperature field and the flow field include the air velocity and air temperature, the simulation and optimization of different flow and temperature, and the combination of the actual conditions Heat for further comparative study. The simulation results show that the uniform temperature field and flow field in the irregular space are the best when the blowing velocity is 10 m / s, the simulated temperature uniformity can be controlled within 2 K and the pressure is within ± 5 Pa. Compared with the actual heat transfer Comparing the calculated results shows that the model can well guarantee the authenticity of the experiment, meet the requirements of temperature field and flow field uniformity and the test environment in the irregular space.