Modeling for liquid plug oscillation frequency and amplitude of Pulsating heat pipe

2021 ◽  
Author(s):  
R.K. Sarangi ◽  
A. Swain ◽  
S.P. Kar ◽  
P.C. Sekhar
Keyword(s):  
Heat Pipe ◽  
Oscillation Frequency ◽  
Pulsating Heat Pipe ◽  
Liquid Plug

Modeling for Fluid Flow and Heat Transfer in Closed Loop Pulsating Heat Pipe

2020 ◽  
pp. 1-34
Author(s):  
Radhakanta Sarangi ◽  
Satya Prakash Kar ◽  
Abhilas Swain ◽  
Lalit Kumar Pothal
Keyword(s):  
Heat Transfer ◽  
Heat Pipe ◽  
Vapor Bubble ◽  
Closed Loop ◽  
Working Fluid ◽  
Vapour Bubble ◽  
Pulsating Heat Pipe ◽  
Time Step ◽  
Liquid Plug ◽  
Evaporation And Condensation

Abstract Numerical modelling of multi turn Closed Loop Pulsating Heat Pipe (CLPHP) is presented in this paper for ethanol as working fluid. Modelling is carried out for 1mm and 2mm ID PHP for different number of turns, different orientations and at constant wall temperature boundary conditions. Momentum and heat transfer variations with time are investigated numerically solving the one dimensional governing equations for vapor bubble and liquid plugs. Evaporation and condensation takes place by heat transfer through liquid film present around the vapour bubble. The code takes into account the realistic phenomena such as vapour bubble generation, liquid plug merging and super heating of vapor bubbles above its saturation temperature. During merging of liquid plugs, a time step adaptive scheme is implemented and this minimum time step was found to be 10−7 s. Nature of flow is investigated by momentum variation plot. Model results are compared with the experimental results from literature for nine different cases. Maximum variation in heat transfer for all these cases is found to be below ±34%. Keywords: Closed Loop Pulsating Heat Pipe, Liquid Plug, Plug momentum, Vapor Bubble, Heat Transfer, Thin Film Evaporation and Condensation

HEAT TRANSFER STUDIES IN A CLOSED LOOP PULSATING HEAT PIPE

2014 ◽  
Vol 5 (1-4) ◽  
pp. 449-456
Author(s):  
Bhawna Verma ◽  
V. L. Yadav ◽  
K. K. Srivastava
Keyword(s):  
Heat Transfer ◽  
Heat Pipe ◽  
Closed Loop ◽  
Pulsating Heat Pipe

ENTROPY GENERATION ANALYSIS FOR A PULSATING HEAT PIPE

2013 ◽  
Vol 44 (1) ◽  
pp. 1-30 ◽  
Author(s):  
Sejung Kim ◽  
Yuwen Zhang ◽  
Jongwook Choi
Keyword(s):  
Heat Pipe ◽  
Entropy Generation ◽  
Pulsating Heat Pipe

PULSATING HEAT PIPE IN HYPERGRAVITY CONDITIONS

2015 ◽  
Vol 6 (1-2) ◽  
pp. 91-109 ◽  
Author(s):  
Mauro Mameli ◽  
Miriam Manzoni ◽  
Lucio Araneo ◽  
Sauro Filippeschi ◽  
Marco Marengo
Keyword(s):  
Heat Pipe ◽  
Pulsating Heat Pipe

NUMERICAL SIMULATION OF PULSATING HEAT PIPE WITH SURFACTANT SOLUTIONS

2018 ◽  
Author(s):  
Durga Bastakoti ◽  
Hongna Zhang ◽  
Wei-Hua Cai ◽  
Feng-Chen Li
Keyword(s):  
Numerical Simulation ◽  
Heat Pipe ◽  
Pulsating Heat Pipe ◽  
Surfactant Solutions
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