Modeling and simulation of the thermal-dynamic performance of super-pressure balloon

A super-pressure balloon with volume about 7000 cubic meter was launched. A thermal-dynamic model was proposed to simulate the thermal-dynamic performance of the super-pressure balloon in ascending and floating process. The ascending altitude and velocity profile, the temperature profile was simulated and compared with the measured data, the temperature and velocity field of the Helium gas was simulated to provide more comprehensive information about the thermal performance of the balloon. The calculated date matched well with the measured data.