Transient thermal and pressurization performance of LO2 tank during helium pressurization combined with outside aerodynamic heating

Pressurization performance and temperature stratification in cryogenic final stage propellant tank

“…Moreover, as the low Re k-e model has been validated with great prediction ability especially for the pressurization discharge process [21,22,27], the low Re k-e model is selected in the present simulation. With the low Re k-e model, the distance from the fluid close to the wall to the wall grid should be less enough to ensure the near-wall region is always resolved to the viscous sub-layer.…”

“…The low Re k-e model is used to simulate the corresponding pressurized discharge process in our previous research [21,22,27]. As the CFD calculation results have shown well agreement with the experimental data, with the maximum relative error less than 10% for the axial temperature values [21,22] and 18% for the pressurized gas requirement mass [27]. Therefore, the low Re k-e model is chosen to investigate the similar pressurization process of the final stage tank.…”

“…The pressurized discharge process of the first stage propellant tank during the rocket ascent period is also investigated by Wang [21,22], under the effect of aerodynamic heating. Other investigators also have conducted some research on the discharge process of the first stage.…”

“…As the Refs. [21,22] mainly focus on the tank discharge for the first stage tank, little attention has been paid on the final stage, which would supply the power for the rocket from the atmosphere to the designed orbit. Under the effect of aerodynamic heat and space radiation, the final stage tank would experience active-pressurization and pressurized discharge process successively.…”

Numerical investigation of pressurization performance in cryogenic tank of new‐style launch vehicle

“…Wang et al . developed a CFD model to predict the transient thermal and pressurization performance of a liquid oxygen tank during helium pressurization combined with outside aerodynamic heating. Comparing the predicted results with experimental data suggested that the model has a good adaptability in predicting the pressurization performance of the pressurized discharge process.…”