Dryout Performance Assessment Of Grooved Heat Pipes Using A 3-D Computational Model

Date

2021-07-25

Author

Gökçe, Gökay
Çetin, Barbaros
Dursunkaya, Zafer

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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Multi-dimensional modeling of heat pipes is a complex task, requiring mathematical models to simultaneously address numerous physical phenomena including evaporation, condensation and free surface flow. Although several studies of flat grooved heat pipes are available in the literature, these studies do not address either the complex groove shapes or the dryout phenomenon in detail, possibly due to the difficulties in modeling approach, and the absence of skin friction data for specific geometries. In addition, current commercial software do not contain models needed to simulate these problems, especially for sophisticated physical phenomena such as phase change with free surface flow due to surface tension inside the channel. To the best of the authors’ knowledge, no CFD program that can simulate the 3-D flow and heat transfer in a grooved heat pipe in a single step is currently available in the open literature. An analysis methodology that computes the liquid flow and heat transfer inside a grooved heat pipe, developed by our group, which models phase change dynamics and liquid-vapor interface shape, coded in Python®, using a commercial CFD program as mesh generator and Navier-Stokes solver, has been utilized to assess the effects of various geometric parameters on the thermal performance of grooved heat pipes. As an extension, the effects of different groove shapes on the thermal and dryout performance of the heat pipe can be investigated. The results show that it is possible to design heat pipes with enhanced performance both in terms of higher heat carrying capacity and lower peak temperatures.

URI

https://hdl.handle.net/11511/91568

Conference Name

ATE-HEFAT 2021 15th International Conference Applied Thermal Engineering

Collections

Department of Mechanical Engineering, Conference / Seminar

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Citation Formats

G. Gökçe, B. Çetin, and Z. Dursunkaya, “Dryout Performance Assessment Of Grooved Heat Pipes Using A 3-D Computational Model,” presented at the ATE-HEFAT 2021 15th International Conference Applied Thermal Engineering, Amsterdam, Hollanda, 2021, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/91568.