Uniform and non-uniform inlet temperature of a vertical hot water jet injected into a rectangular tank

Handle URI:
http://hdl.handle.net/10754/564325
Title:
Uniform and non-uniform inlet temperature of a vertical hot water jet injected into a rectangular tank
Authors:
El-Amin, Mohamed ( 0000-0002-1099-2299 ) ; Sun, Shuyu ( 0000-0002-3078-864X )
Abstract:
In most of real-world applications, such as the case of heat stores, inlet is not kept at a constant temperature but it may vary with time during charging process. In this paper, a vertical water jet injected into a rectangular storage tank is measured experimentally and simulated numerically. Two cases of study are considered; one is a hot water jet with uniform inlet temperature (UIT) injected into a cold water tank, and the other is a cold water jet with non-uniform inlet temperature (NUIT) injected into a hot water tank. Three different temperature differences and three different flow rates are studied for the hot water jet with UIT which is injected into a cold water tank. Also, three different initial temperatures with constant flow rate as well as three different flow rates with constant initial temperature are considered for the cold jet with NUIT which is injected into a hot water tank. Turbulence intensity at the inlet as well as Reynolds number for the NUIT cases are therefore functions of inlet temperature and time. Both experimental measurements and numerical calculations are carried out for the same measured flow and thermal conditions. The realizable k-ε model is used for modeling the turbulent flow. Numerical solutions are obtained for unsteady flow while pressure, velocity, temperature and turbulence distributions inside the water tank are analyzed. The simulated results are compared to the measured results, and they show a good agreement at low temperatures. © 2010 IEEE.
KAUST Department:
Computational Transport Phenomena Lab; Physical Sciences and Engineering (PSE) Division; Environmental Science and Engineering Program
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Journal:
2010 3rd International Conference on Thermal Issues in Emerging Technologies Theory and Applications
Conference/Event name:
2010 3rd International Conference on Thermal Issues in Emerging Technologies, Theory and Applications, ThETA3 2010
Issue Date:
Dec-2010
DOI:
10.1109/THETA.2010.5766422
Type:
Conference Paper
ISBN:
9781612842660
Appears in Collections:
Conference Papers; Environmental Science and Engineering Program; Physical Sciences and Engineering (PSE) Division; Computational Transport Phenomena Lab

Full metadata record

DC FieldValue Language
dc.contributor.authorEl-Amin, Mohameden
dc.contributor.authorSun, Shuyuen
dc.date.accessioned2015-08-04T06:23:45Zen
dc.date.available2015-08-04T06:23:45Zen
dc.date.issued2010-12en
dc.identifier.isbn9781612842660en
dc.identifier.doi10.1109/THETA.2010.5766422en
dc.identifier.urihttp://hdl.handle.net/10754/564325en
dc.description.abstractIn most of real-world applications, such as the case of heat stores, inlet is not kept at a constant temperature but it may vary with time during charging process. In this paper, a vertical water jet injected into a rectangular storage tank is measured experimentally and simulated numerically. Two cases of study are considered; one is a hot water jet with uniform inlet temperature (UIT) injected into a cold water tank, and the other is a cold water jet with non-uniform inlet temperature (NUIT) injected into a hot water tank. Three different temperature differences and three different flow rates are studied for the hot water jet with UIT which is injected into a cold water tank. Also, three different initial temperatures with constant flow rate as well as three different flow rates with constant initial temperature are considered for the cold jet with NUIT which is injected into a hot water tank. Turbulence intensity at the inlet as well as Reynolds number for the NUIT cases are therefore functions of inlet temperature and time. Both experimental measurements and numerical calculations are carried out for the same measured flow and thermal conditions. The realizable k-ε model is used for modeling the turbulent flow. Numerical solutions are obtained for unsteady flow while pressure, velocity, temperature and turbulence distributions inside the water tank are analyzed. The simulated results are compared to the measured results, and they show a good agreement at low temperatures. © 2010 IEEE.en
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.titleUniform and non-uniform inlet temperature of a vertical hot water jet injected into a rectangular tanken
dc.typeConference Paperen
dc.contributor.departmentComputational Transport Phenomena Laben
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentEnvironmental Science and Engineering Programen
dc.identifier.journal2010 3rd International Conference on Thermal Issues in Emerging Technologies Theory and Applicationsen
dc.conference.date19 December 2010 through 22 December 2010en
dc.conference.name2010 3rd International Conference on Thermal Issues in Emerging Technologies, Theory and Applications, ThETA3 2010en
dc.conference.locationCairoen
dc.contributor.institutionDepartment of Mathematics, Aswan Faculty of Science, South Valley University, Aswan 81528, Egypten
kaust.authorEl-Amin, Mohameden
kaust.authorSun, Shuyuen
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