Analysis of turbulence statistics and thermofluidic characteristics under circular jet impingement

T. Natarajan, J. W. Jewkes, R. Narayanaswamy, A. J. King, Y. M. Chung, A. D. Lucey

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

Abstract

Convective heat transfer studies of impinging jets have received considerable attention over the years, due to their high local, and averaged heat transfer coefficients. In the present work, highly resolved Large Eddy Simulations (LES) are carried out for a turbulent impinging round jet with structured meshes of varying resolution, with both radial and axial refinements. The Reynolds number studied is 23000. The height of discharge from the impingement wall is 2 times the jet diameter. A particular focus of the current research is to study the role of turbulent structures in jet impingement heat transfer. Second order turbulence statistics are computed and validated against established experimental work. Preliminary validation work was carried out by Natarajan et al. [8]. The present study is a continuation of this research, the focus now being upon the turbulence statistics. The work also critically examines the effect of Reynolds number, standoff distance and reveals the role of turbulence in enhancing heat transfer rate, by comparing turbulent statistics and the Nusselt number distributions.

Original languageEnglish
Title of host publicationProceedings of the 19th Australasian Fluid Mechanics Conference, AFMC 2014
Place of PublicationCanberra
PublisherAustralasian Fluid Mechanics Society
ISBN (Electronic)9780646596952
Publication statusPublished - 2014
Externally publishedYes
EventAustralasian Fluid Mechanics Conference - Melbourne, Australia
Duration: 8 Dec 201411 Dec 2014
Conference number: 19

Conference

ConferenceAustralasian Fluid Mechanics Conference
Abbreviated titleAFMC 2014
CountryAustralia
CityMelbourne
Period8/12/1411/12/14

Fingerprint

Turbulence
Statistics
Heat transfer
Reynolds number
Large eddy simulation
Nusselt number
Heat transfer coefficients

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

Cite this

Natarajan, T., Jewkes, J. W., Narayanaswamy, R., King, A. J., Chung, Y. M., & Lucey, A. D. (2014). Analysis of turbulence statistics and thermofluidic characteristics under circular jet impingement. In Proceedings of the 19th Australasian Fluid Mechanics Conference, AFMC 2014 [262] Canberra: Australasian Fluid Mechanics Society.

Analysis of turbulence statistics and thermofluidic characteristics under circular jet impingement. / Natarajan, T.; Jewkes, J. W.; Narayanaswamy, R.; King, A. J.; Chung, Y. M.; Lucey, A. D.

Proceedings of the 19th Australasian Fluid Mechanics Conference, AFMC 2014. Canberra : Australasian Fluid Mechanics Society, 2014. 262.

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

Natarajan, T, Jewkes, JW, Narayanaswamy, R, King, AJ, Chung, YM & Lucey, AD 2014, Analysis of turbulence statistics and thermofluidic characteristics under circular jet impingement. in Proceedings of the 19th Australasian Fluid Mechanics Conference, AFMC 2014., 262, Australasian Fluid Mechanics Society, Canberra, Australasian Fluid Mechanics Conference, Melbourne, Australia, 8/12/14.
Natarajan T, Jewkes JW, Narayanaswamy R, King AJ, Chung YM, Lucey AD. Analysis of turbulence statistics and thermofluidic characteristics under circular jet impingement. In Proceedings of the 19th Australasian Fluid Mechanics Conference, AFMC 2014. Canberra: Australasian Fluid Mechanics Society. 2014. 262
Natarajan, T. ; Jewkes, J. W. ; Narayanaswamy, R. ; King, A. J. ; Chung, Y. M. ; Lucey, A. D. / Analysis of turbulence statistics and thermofluidic characteristics under circular jet impingement. Proceedings of the 19th Australasian Fluid Mechanics Conference, AFMC 2014. Canberra : Australasian Fluid Mechanics Society, 2014.
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