| タイトル | Development of an Efficient CFD Model for Nuclear Thermal Thrust Chamber Assembly Design |
| 本文（外部サイト） | http://hdl.handle.net/2060/20070031967 |
| 著者（英） | Ito, Yasushi; Chen, Yen-Sen; Cheng, Gary; Ross, Doug; Wang, Ten-See |
| 著者所属（英） | NASA Marshall Space Flight Center |
| 発行日 | 2007-06-25 |
| 言語 | eng |
| 内容記述 | The objective of this effort is to develop an efficient and accurate computational methodology to predict both detailed thermo-fluid environments and global characteristics of the internal ballistics for a hypothetical solid-core nuclear thermal thrust chamber assembly (NTTCA). Several numerical and multi-physics thermo-fluid models, such as real fluid, chemically reacting, turbulence, conjugate heat transfer, porosity, and power generation, were incorporated into an unstructured-grid, pressure-based computational fluid dynamics solver as the underlying computational methodology. The numerical simulations of detailed thermo-fluid environment of a single flow element provide a mechanism to estimate the thermal stress and possible occurrence of the mid-section corrosion of the solid core. In addition, the numerical results of the detailed simulation were employed to fine tune the porosity model mimic the pressure drop and thermal load of the coolant flow through a single flow element. The use of the tuned porosity model enables an efficient simulation of the entire NTTCA system, and evaluating its performance during the design cycle. |
| NASA分類 | Spacecraft Propulsion and Power |
| 権利 | Copyright, Distribution as joint owner in the copyright |
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