Numerical simulation on the two-phase flow pattern in the loop heat pipe with r-134a

Park, Seong Hyun; Park, Yong Gap; Ha, Man Yeong

dc.contributor.author	Park, Seong Hyun	en
dc.contributor.author	Park, Yong Gap	en
dc.contributor.author	Ha, Man Yeong	en
dc.date.accessioned	2017-09-19T12:48:52Z
dc.date.available	2017-09-19T12:48:52Z
dc.date.issued	2017	en
dc.description	Papers presented at the 13th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Portoroz, Slovenia on 17-19 July 2017 .	en
dc.description.abstract	This paper discusses the two-phase flow pattern in the loop heat pipe with R-134a. A computational fluid dynamics (CFD) study was carried out using ANSYS FLUENT. VOF model was used to simulate interface between vapor and liquid phase of R- 134a. A UDF was used to model evaporation and condensation mass transfer between two phases. For the simulation of increase of pressure in the loop heat pipe, the ideal gas law was considered when modelling the density of vapor. The numerically calculated temperatures in this paper and Fadhl’s calculated temperatures and experimentally measured temperatures matched very well [2]. The maximum difference between the calculated and Fadhl’s temperature data is 2.4 %. The bubble figure in the loop heat was observed with time passed in this paper.	en
dc.description.sponsorship	International centre for heat and mass transfer.	en
dc.description.sponsorship	American society of thermal and fluids engineers.	en
dc.format.extent	4 pages	en
dc.format.medium	PDF	en
dc.identifier.uri	http://hdl.handle.net/2263/62449
dc.language.iso	en	en
dc.publisher	HEFAT	en
dc.rights	University of Pretoria	en
dc.subject	Two-phase flow	en
dc.subject	Loop heat pipe	en
dc.subject	R-134a	en
dc.title	Numerical simulation on the two-phase flow pattern in the loop heat pipe with r-134a	en
dc.type	Presentation	en