NDLI: Conjugate Heat Transfer CFD Predictions of the Influence of the Impingement Gap on the Effect of Crossflow

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Abubakar, M. El-Jummah Gordon, E. Andrews John, E. J. Staggs
Copyright Year	2013
Abstract	This conjugate heat transfer (CHT) CFD predictions were carried out for a square array impingement holes with X/D of 5 and at a single high mass flow cooling rate G of 1.84kg/sm2bar. CHT was modelled with a 100kW/m2 fixed heat flux imposed at the hot face of the target wall, which gives a temperature at the cold face that is typical of normal operating conditions of a gas turbine. The wall temperatures as a function of distance along the gap and through the wall thickness were computed, together with the gap aerodynamics. The main parameter investigated was the gap Z/D (0.83–7.0). The results showed that the surface averaged Nu/Pr0.33 was predicted to be reduced from 73 to 48 over the range of Z/D, which is in good agreement with literature values. The cause was shown to be reduced surface turbulence levels as the crossflow convected turbulence away from the surface. There was also heating of the impingement jets at large Z/D so that the original cool jet air did not reach the surface.
Sponsorship	Heat Transfer Division
File Format	PDF
ISBN	9780791855492
DOI	10.1115/HT2013-17180
Volume Number	Volume 3: Gas Turbine Heat Transfer; Transport Phenomena in Materials Processing and Manufacturing; Heat Transfer in Electronic Equipment; Symposium in Honor of Professor Richard Goldstein; Symposium in Honor of Prof. Spalding; Symposium in Honor of Prof. Arthur E. Bergles
Conference Proceedings	ASME 2013 Heat Transfer Summer Conference collocated with the ASME 2013 7th International Conference on Energy Sustainability and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology
Language	English
Publisher Date	2013-07-14
Publisher Place	Minneapolis, Minnesota, USA
Access Restriction	Subscribed
Subject Keyword	Turbulence Temperature Cooling Computational fluid dynamics Aerodynamics Wall thickness Flow (dynamics) Heat flux Wall temperature Gas turbines Heating Jets Heat transfer
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in