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Multiphysics Nuclear Thermal Rocket Thrust Chamber AnalysisThe objective of this effort is t o develop an efficient and accurate thermo-fluid computational methodology to predict environments for hypothetical thrust chamber design and analysis. The current task scope is to perform multidimensional, multiphysics analysis of thrust performance and heat transfer analysis for a hypothetical solid-core, nuclear thermal engine including thrust chamber and nozzle. The multiphysics aspects of the model include: real fluid dynamics, chemical reactivity, turbulent flow, and conjugate heat transfer. The model will be designed to identify thermal, fluid, and hydrogen environments in all flow paths and materials. This model would then be used to perform non- nuclear reproduction of the flow element failures demonstrated in the Rover/NERVA testing, investigate performance of specific configurations and assess potential issues and enhancements. A two-pronged approach will be employed in this effort: a detailed analysis of a multi-channel, flow-element, and global modeling of the entire thrust chamber assembly with a porosity modeling technique. It is expected that the detailed analysis of a single flow element would provide detailed fluid, thermal, and hydrogen environments for stress analysis, while the global thrust chamber assembly analysis would promote understanding of the effects of hydrogen dissociation and heat transfer on thrust performance. These modeling activities will be validated as much as possible by testing performed by other related efforts.
Document ID
20050234624
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
Wang, Ten-See
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
August 23, 2013
Publication Date
May 31, 2005
Subject Category
Spacecraft Propulsion And Power
Meeting Information
Meeting: Space Technology and Applications International Forum (STAIF-2006)
Location: Albuquerque, NM
Country: United States
Start Date: February 12, 2006
End Date: February 16, 2006
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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