Numerical investigations of small diameter two-phase closed thermosyphon
Y. Naresh,Chakravarthy Balaji +1 more
- Vol. 745, Iss: 3, pp 032122
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In this article, a CFD model is developed to simulate the working of a 6mm diameter two-phase closed thermosyphon using water as the working fluid and a user-defined function (UDF) has been developed and integrated with the model.Abstract:
In this work, a CFD model is developed to simulate the working of a 6mm diameter two-phase closed thermosyphon using water as the working fluid. At each section (evaporator, condenser, adiabatic) of the thermosyphon, lumped equations have been developed to calculate the temperatures at corresponding sections. In order to process two phase flow inside the system, a user-defined function (UDF) has been developed and integrated with the CFD model. The volume of fluid (VOF) method is used to carry out the simulations in Ansys FLUENT 15 and the lumped equations are solved in MATLAB 2013a. Volume fractions and temperature profiles obtained from CFD simulations and the lumped parametric estimations are found to be in good agreement with the experimental results available in literature.read more
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Combination of CFD and DOE for optimization of thermosyphon heat pipe
TL;DR: In this paper, the effects of length of the three mentioned sections of heat pipe were investigated through introducing the ratio of adiabatic length to the condenser length or evaporator length as aspect ratio (AR), filling ratio of working fluid, and heat load on the thermal performance of a thermosyphon heat pipe by combining computational fluid dynamics (CFD) and design of experiment (DOE).
References
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Book
Thermodynamics : An Engineering Approach, 7th Edition
TL;DR: In this paper, Cengel and Boles present a conceptual understanding of the fundamental elements of "Thermodynamics, An Engineering Approach", 7th edition, and explain the basic concepts of thermodynamics such as solution of engineering problems.
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Numerical modelling of the temperature distribution in a two-phase closed thermosyphon
TL;DR: The Saudi Cultural Bureau in London, the Ministry of Higher Education and the Mechanical Engineering Department, Umm Al-Qura University as discussed by the authors have published a survey on the Saudi cultural heritage.
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Experimental investigation of small diameter two-phase closed thermosyphons charged with water, FC-84, FC-77 and FC-3283
TL;DR: In this paper, an experimental investigation of the performance of thermosyphons charged with water as well as the dielectric heat transfer liquids FC-84, FC-77 and FC-3283 has been carried out.
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CFD modelling of a two-phase closed thermosyphon charged with R134a and R404a
TL;DR: In this article, a CFD model was built to simulate the details of the two-phase flow and heat transfer phenomena during the start-up and steady-state operation of a thermosyphon.