Mathematical modeling and analysis of heat pipe start-up from the frozen state
- Wright State Univ., Dayton, OH (United States)
- Wright Research and Development Center, Wright-Patterson, OH (United States)
The start-up process of a frozen heat pipe is described and a complete mathematical model for the start-up of the frozen heat pipe is developed based on the existing experimental data, which is simplified and solved numerically. The two-dimensional transient model for the wall and wick is coupled with the one-dimensional transient model for the vapor flow when vaporization and condensation occur at the interface. A parametric study is performed to examine the effect of the boundary specification at the surface of the outer wall on the successful start-up from the frozen state. For successful start-up, the boundary specification at the outer wall surface must melt the working substance in the condenser before dry-out takes place in the evaporator.
- Research Organization:
- NASA Lewis Research Center, Cleveland, OH (United States)
- Sponsoring Organization:
- National Aeronautics and Space Administration, Washington, DC (United States); USDOE, Washington, DC (United States); Department of Defense, Washington, DC (United States)
- DOE Contract Number:
- AI03-86SF16310
- OSTI ID:
- 10180649
- Report Number(s):
- NASA-CR-185132; ON: DE94051200; TRN: 94:008282
- Resource Relation:
- Other Information: PBD: Aug 1989
- Country of Publication:
- United States
- Language:
- English
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