| タイトル | Coupled Fluids-Radiation Analysis of a High-Mass Mars Entry Vehicle |
| 本文（外部サイト） | http://hdl.handle.net/2060/20110015018 |
| 著者（英） | Tang, Chun; Brown, Jim; Allen, Gary; Palmer, Grant |
| 著者所属（英） | NASA Ames Research Center |
| 発行日 | 2011-06-27 |
| 言語 | eng |
| 内容記述 | The NEQAIR line-by-line radiation code has been incorporated into the DPLR Navier-Stokes flow solver such that the NEQAIR subroutines are now callable functions of DPLR. The coupled DPLR-NEQAIR code was applied to compute the convective and radiative heating rates over high-mass Mars entry vehicles. Two vehicle geometries were considered - a 15 m diameter 70-degree sphere cone configuration and a slender, mid-L/D vehicle with a diameter of 5 m called an Ellipsled. The entry masses ranged from 100 to 165 metric tons. Solutions were generated for entry velocities ranging from 6.5 to 9.1 km/s. The coupled fluids-radiation solutions were performed at the peak heating location along trajectories generated by the Traj trajectory analysis code. The impact of fluids-radiation coupling is a function of the level of radiative heating and the freestream density and velocity. For the high-mass Mars vehicles examined in this study, coupling effects were greatest for entry velocities above 8.5 km/s where the surface radiative heating was reduced by up 17%. Generally speaking, the Ellipsled geometry experiences a lower peak radiative heating rate but a higher peak turbulent convective heating rate than the MSL-based vehicle. |
| NASA分類 | Fluid Mechanics and Thermodynamics |
| レポートNO | ARC-E-DAA-TN3787 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/246043 |
