Numerical analysis of transient two phase flow in heat pipe

Mehta, R. C.; Jayachandran, T.

doi:10.1007/bf02172583

Cited by 7 publications

(4 citation statements)

References 5 publications

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“…Suman et al [15] took quite many effects into account and established a 1-D model to describe the transient thermal behavior of a micro-grooved heat pipe with respect to several parameters. Besides, many studies of the transient operation of heat pipes have been reported [16][17][18][19][20]. In these works, transient behaviors of heat pipes are addressed experimentally, mathematically, or numerically.…”

Section: Introductionmentioning

confidence: 99%

Dynamic test method for determining the thermal performances of heat pipes

Tsai

Chang

et al. 2010

International Journal of Heat and Mass Transfer

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Section: Introductionmentioning

confidence: 99%

Dynamic test method for determining the thermal performances of heat pipes

Tsai

Chang

et al. 2010

International Journal of Heat and Mass Transfer

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“…A two-phase analysis was carried out by Mehta and Jayachandran [6] for the heat pipe to study the vapour dynamics of the working fluid. Using finite volume method, the compressible flow equations for vapour-phase interaction with water particle phase were solved.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Deviation of Phase Change Characteristics of Horizontal and Vertical Flat Heat Pipe Configurations

Hari

Jolly

Muraleedharan

2015

The Journal of Computational Multiphase Flows

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The flow characteristics in the porous wick of a flat heat pipe subjected to boiling and condensation are analysed here using two-phase mixture model. Steady laminar boundary layer flow in the capillary wick structure is considered for both vertical and horizontal orientations. The governing boundary layer partial differential equations are simplified using similarity transformation. The transformed equations are then solved numerically by using shooting iterative technique. Investigation was carried out for the effects of the involved parameters such as saturation and temperature across the boundary layer. The behaviour of non-dimensional numbers due to the orientation of the heat pipe is also discussed. The study confirms that orientation plays a significant role in flow and temperature field.

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“…The resultant ordinary differential equations are numerically solved using Gears Stiff method and shooting procedure. A two-phase analysis is carried out by Mehta and Jayachandran [4] for the heat pipe to study the vapour dynamics of the working fluid. The compressible flow equations for vapour-phase interaction with water particle phase are solved using finite volume method.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Boiling and Condensation Characteristics in the Porous Wick of a Flat Heat Pipe in Vertical and Horizontal Orientation

Hari

Jolly

Muraleedharan

2014

AMM

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The two-phase flow through porous media is an important topic which spans a broad spectrum of engineering disciplines especially in porous heat pipes. Heat pipe is a thermodynamic device that transports heat energy from one location to another with a negligible temperature drop. The aim of the present work is to investigate the phase change mechanisms, namely boiling and condensation, in the flat heat pipe system with different orientation. Governing equations used for the formulation are continuity, mixture momentum, liquid conservation and energy equations. These equations are converted into three ordinary differential equations using similarity transformation and two-phase similarity solutions are obtained for both boiling and condensing flows. In each case, a two phase zone where the liquid and vapour can coexist appears adjacent to the wall. As the heat transfer at the wall gradually enhances, the liquid saturation at the wall approaches to the limiting value, zero, for boiling and unity for condensation. The present work is an attempt to predict numerically the liquid wall saturation, non-dimensional temperature, non-dimensional temperature gradient and effect of Sherwood number during the phase change of water-steam system in the heat pipe for horizontal and vertical cases. Nomenclature

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Numerical analysis of transient two phase flow in heat pipe

Cited by 7 publications

References 5 publications

Dynamic test method for determining the thermal performances of heat pipes

Dynamic test method for determining the thermal performances of heat pipes

Numerical Investigation of Deviation of Phase Change Characteristics of Horizontal and Vertical Flat Heat Pipe Configurations

Comparison of Boiling and Condensation Characteristics in the Porous Wick of a Flat Heat Pipe in Vertical and Horizontal Orientation

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