Conjugate Heat Transfer Study at Interior Surface of NGV Leading Edge with Combined Shower Head and Impingement Cooling

Conjugate Heat Transfer Study at Interior Surface of NGV Leading Edge with Combined Shower Head and Impingement Cooling

A computational study on conjugate heat transfer is carried out to present the behavior of nondimensional temperature and heat transfer coefficient of a Nozzle Guide Vane (NGV) leading edge. Reynolds number of both mainstream flow and coolant impinging jets are varied. The NGV has five rows of film...

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Main Authors: Arun Kumar Pujari, B. V. S. S. S. Prasad, N. Sitaram
Format: Article
Language:English
Published: Hindawi Limited 2014-01-01
Series:International Journal of Rotating Machinery
Online Access:http://dx.doi.org/10.1155/2014/754983
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spelling doaj-f6f251bd65614db78032397299c813772020-11-25T01:10:34ZengHindawi LimitedInternational Journal of Rotating Machinery1023-621X1542-30342014-01-01201410.1155/2014/754983754983Conjugate Heat Transfer Study at Interior Surface of NGV Leading Edge with Combined Shower Head and Impingement CoolingArun Kumar Pujari0B. V. S. S. S. Prasad1N. Sitaram2Thermal Turbomachines Laboratory, Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai 600036, IndiaThermal Turbomachines Laboratory, Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai 600036, IndiaThermal Turbomachines Laboratory, Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai 600036, IndiaA computational study on conjugate heat transfer is carried out to present the behavior of nondimensional temperature and heat transfer coefficient of a Nozzle Guide Vane (NGV) leading edge. Reynolds number of both mainstream flow and coolant impinging jets are varied. The NGV has five rows of film cooling holes arranged in shower head manner and four rows of impingement holes arranged in staggered manner. The results are presented by considering materials of different thermal conductivity. The results show that the mainstream flow affects the temperature distribution on the interior side of the vane leading edge for high conductivity material whereas it has negligible effects for low conductivity material. The effect of changing blowing ratio on internal heat transfer coefficient and internal surface temperature is also presented.http://dx.doi.org/10.1155/2014/754983
collection DOAJ
language English
format Article
sources DOAJ
author Arun Kumar Pujari
B. V. S. S. S. Prasad
N. Sitaram
spellingShingle Arun Kumar Pujari
B. V. S. S. S. Prasad
N. Sitaram
Conjugate Heat Transfer Study at Interior Surface of NGV Leading Edge with Combined Shower Head and Impingement Cooling
International Journal of Rotating Machinery
author_facet Arun Kumar Pujari
B. V. S. S. S. Prasad
N. Sitaram
author_sort Arun Kumar Pujari
title Conjugate Heat Transfer Study at Interior Surface of NGV Leading Edge with Combined Shower Head and Impingement Cooling
title_short Conjugate Heat Transfer Study at Interior Surface of NGV Leading Edge with Combined Shower Head and Impingement Cooling
title_full Conjugate Heat Transfer Study at Interior Surface of NGV Leading Edge with Combined Shower Head and Impingement Cooling
title_fullStr Conjugate Heat Transfer Study at Interior Surface of NGV Leading Edge with Combined Shower Head and Impingement Cooling
title_full_unstemmed Conjugate Heat Transfer Study at Interior Surface of NGV Leading Edge with Combined Shower Head and Impingement Cooling
title_sort conjugate heat transfer study at interior surface of ngv leading edge with combined shower head and impingement cooling
publisher Hindawi Limited
series International Journal of Rotating Machinery
issn 1023-621X
1542-3034
publishDate 2014-01-01
description A computational study on conjugate heat transfer is carried out to present the behavior of nondimensional temperature and heat transfer coefficient of a Nozzle Guide Vane (NGV) leading edge. Reynolds number of both mainstream flow and coolant impinging jets are varied. The NGV has five rows of film cooling holes arranged in shower head manner and four rows of impingement holes arranged in staggered manner. The results are presented by considering materials of different thermal conductivity. The results show that the mainstream flow affects the temperature distribution on the interior side of the vane leading edge for high conductivity material whereas it has negligible effects for low conductivity material. The effect of changing blowing ratio on internal heat transfer coefficient and internal surface temperature is also presented.
url http://dx.doi.org/10.1155/2014/754983
work_keys_str_mv AT arunkumarpujari conjugateheattransferstudyatinteriorsurfaceofngvleadingedgewithcombinedshowerheadandimpingementcooling
AT bvsssprasad conjugateheattransferstudyatinteriorsurfaceofngvleadingedgewithcombinedshowerheadandimpingementcooling
AT nsitaram conjugateheattransferstudyatinteriorsurfaceofngvleadingedgewithcombinedshowerheadandimpingementcooling
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