Analysis of heat pipe vapor dynamics
Abstract
The transient behavior of vapor flow in heat pipes is analyzed numerically using a two-dimensional compressible flow model. The vapor core response to changes in the evaporation and condensation rates following a sudden increase, or decrease, in the input heat flux, or the condensation temperature is studied. The numerical scheme is fully implicit using a staggered grid to overcome the numerical stability problem. When the input heat flux is low, the vapor flows smoothly toward the condensation region. However, with high input heat flux, reverse flow was detected in the adiabatic as well as the condensation region.
- Publication:
-
ASME 1988 National Heat Transfer Conference, Volume 1
- Pub Date:
- 1988
- Bibcode:
- 1988nht.....1..361I
- Keywords:
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- Computational Fluid Dynamics;
- Gas Dynamics;
- Heat Pipes;
- Transient Response;
- Vapor Phases;
- Compressible Flow;
- Computational Grids;
- Two Dimensional Flow;
- Two Dimensional Models;
- Fluid Mechanics and Heat Transfer