Effect of multi-hole arrangement on the effusion cooling with backward injection-Reference-Cited by-同舟云学术

Effect of multi-hole arrangement on the effusion cooling with backward injection

Published:2021-07-01 Issue:4 Volume:40 Page:387-397
ISSN:0334-0082
Container-title:International Journal of Turbo & Jet-Engines
language:en
Short-container-title:

Author:

Prakash Ved¹,Chandel Sunil¹,Thakur Dineshsingh G.¹,Mishra Mukesh P.²,Mishra R. K.³

Affiliation:

1. Department of Mechanical Engineering , Defence Institute of Advanced Technology , Girinagar , Pune 411025 , India

2. Instruments Research and Development Establishment , Raipur Road , Dehradun 248008 , India

3. Centre for Military Airworthiness and Certification , Bangalore 560037 , India

Abstract

Abstract In the present work, a three-dimensional numerical analysis of multi-hole film cooling on an adiabatic flat plate with combined backward and forward injection holes is carried out at varying velocity ratios from 0.5 to 2.5. The effect of three different multi-hole arrangements, square-diamond, long-diamond, and super-long-diamond with constant perforated percentage (3.27%), on film cooling performance is studied. Combining backward and forward injection holes help in achieving higher velocity boundary layer thickness in the multi-hole arrangement. It is observed that super-long-diamond arrangement provides the highest film cooling effectiveness than square-diamond and long-diamond arrangements and favours early development of coolant film layer.

Publisher

Walter de Gruyter GmbH

Subject

Aerospace Engineering

Link

https://www.degruyter.com/document/doi/10.1515/tjj-2021-0023/pdf

Reference20 articles.

1. Goldstein, RJ. Film cooling. In: Advances in heat transfer. Elsevier; 1971, vol 7:321–79 pp.

2. Andrews, GE, Gupta, ML, Mkpadi, MC. Full coverage discrete hole film cooling: cooling effectiveness. Int J Turbo Jet Engines 1985;2:199–212. https://doi.org/10.1515/tjj.1985.2.3.199.

3. Andrews, GE, Alikhanizadeh, M, Bazdidi Tehrani, F, Hussain, CI, Koshkbar Azari, MS. Small diameter film cooling holes: the influence of hole size and pitch. Int J Turbo Jet Engines 1988;5:61–72. https://doi.org/10.1515/tjj.1988.5.1-4.61.

4. Le Brocq, PV, Launder, BE, Priddin, CH. Experiments on transpiration cooling: first paper: discrete hole injection as a means of transpiration cooling; an experimental study. Proc Inst Mech Eng 1973;187:149–57. https://doi.org/10.1243/pime_proc_1973_187_095_02.

5. Sarkar, S, Bose, TK. Numerical simulation of a 2-D jet-cross flow interaction related to film cooling applications: effects of blowing rate, injection angle and free-stream turbulence. Sadhana 1995;20:915–35. https://doi.org/10.1007/bf02745873.