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Mathematical modeling and analysis of heat pipe start-up from the frozen state
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Mahefkey, Edward T. Chang, Won Soon Faghri, Amir Jang, Jong Hoon |
| Copyright Year | 1989 |
| Description | 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. |
| File Size | 1009074 |
| Page Count | 12 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19890019376 |
| Archival Resource Key | ark:/13960/t40s4p52t |
| Language | English |
| Publisher Date | 1989-08-01 |
| Access Restriction | Open |
| Subject Keyword | Fluid Mechanics And Heat Transfer Temperature Distribution Boundary Value Problems Wicks Pipe Flow Two Dimensional Models Liquid-vapor Interfaces Liquid Metals Condensation Heat Flux Algorithms Vaporizing Simulation Heat Pipes Starting Working Fluids Mathematical Models Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
