Computational and Experimental Study of Film-Cooling Effectiveness With and Without Downstream Vortex Generators

Lee, Chien-Shing; Shih, Tom I-P.; Straub, Douglas; Weber, Justin M.; Robey, Edward H.

doi:10.1115/1.4055529

Computational and Experimental Study of Film-Cooling Effectiveness With and Without Downstream Vortex Generators

Journal Article · Wed Oct 12 00:00:00 EDT 2022 · Journal of Turbomachinery

DOI:https://doi.org/10.1115/1.4055529· OSTI ID:1893932

Lee, Chien-Shing ^[1]; Shih, Tom I-P. ^[1]; Straub, Douglas ^[2]; Weber, Justin M. ^[2]; Robey, Edward H. ^[2]

Purdue Univ., West Lafayette, IN (United States)
National Energy Technology Lab. (NETL), Morgantown, WV (United States)

Downstream vortex generators that involve a pair of rectangular plates arranged in an open V-shape placed just downstream of each film-cooling hole were shown to create flow and vortical structures that entrain lifted film-cooling flow back to the surface and increase its lateral spreading on the surface (GT2020–14317). In this study, computations and measurements were performed to examine the flow mechanisms this vortex generator induces to improve film-cooling effectiveness of a flat plate with the cooling flow emanating from one row of inclined holes. Parameters studied include blowing ratio (BR = 0.75 and 1.0) and temperature ratio (TR = 1.07 and 1.9). Here, the computational study is based on steady Reynolds-averaged Navier–Stokes (RANS) closed by the shear-stress transport (SST) turbulence model with and without conjugate analysis. The experimental study was conducted by using a conjugate heat transfer test rig with a plenum, where cooling flow is introduced. Measurements made include velocity and temperature profiles upstream and downstream of the film-cooling holes as well as the temperature at several locations on the hot and cold sides of the film-cooled flat plate. The computational study was validated by comparing computed results with those from measurements at BR = 0.75 and 1.0 and TR = 1.9. Computational and experimental results are presented to show the effects of BR and TR on the flow structures and how those structures improve the effectiveness of film cooling with and without the downstream vortex generators and with and without conjugate heat transfer.

View Accepted Manuscript (DOE)

Research Organization:: National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)

Sponsoring Organization:: USDOE Office of Fossil Energy (FE)

Grant/Contract Number:: AC02-07CH11358

OSTI ID:: 1893932

Journal Information:: Journal of Turbomachinery, Journal Name: Journal of Turbomachinery Journal Issue: 2 Vol. 145; ISSN 0889-504X

Publisher:: ASMECopyright Statement

Country of Publication:: United States

Language:: English

References (30)

Effects of hole geometry and density on three-dimensional film cooling Goldstein, R. J.; Eckert, E. R. G.; Burggraf, F. International Journal of Heat and Mass Transfer, Vol. 17, Issue 5 https://doi.org/10.1016/0017-9310(74)90007-6	journal	May 1974
Experimental investigations on the effects of inclination angle and blowing ratio on the flat-plate film cooling enhancement using the vortex generator downstream Song, Liming; Zhang, Chao; Song, Yingjie Applied Thermal Engineering, Vol. 119 https://doi.org/10.1016/j.applthermaleng.2017.03.089	journal	June 2017
Overall cooling performance evaluation for film cooling with different winglet pairs vortex generators Deng, Hefang; Teng, Jinfang; Zhu, Mingmin Applied Thermal Engineering, Vol. 201 https://doi.org/10.1016/j.applthermaleng.2021.117731	journal	January 2022
Large eddy simulation of an inclined jet in crossflow with vortex generators Zhao, Zhiyuan; Wen, Fengbo; Tang, Xiaolei International Journal of Heat and Mass Transfer, Vol. 170 https://doi.org/10.1016/j.ijheatmasstransfer.2021.121032	journal	May 2021
Film Cooling Performance Enhancement by Upstream V-shaped Protrusion/Dimple Vortex Generator He, Juan; Deng, Qinghua; Feng, Zhenping International Journal of Heat and Mass Transfer, Vol. 180 https://doi.org/10.1016/j.ijheatmasstransfer.2021.121784	journal	December 2021
Large eddy simulation of pulsed film cooling with vortex generators Zhao, Zhiyuan; Wen, Fengbo; Tang, Xiaolei International Journal of Heat and Mass Transfer, Vol. 180 https://doi.org/10.1016/j.ijheatmasstransfer.2021.121806	journal	December 2021
Large eddy simulation of film cooling with vortex generators between two consecutive cooling rows Zhao, Zhiyuan; Wen, Fengbo; Tang, Xiaolei International Journal of Heat and Mass Transfer, Vol. 182 https://doi.org/10.1016/j.ijheatmasstransfer.2021.121955	journal	January 2022
Effects of upstream ramp on the performance of film cooling Chen, Shuping P.; Chyu, Minking K.; Shih, Tom I. -P. International Journal of Thermal Sciences, Vol. 50, Issue 6 https://doi.org/10.1016/j.ijthermalsci.2010.10.005	journal	June 2011
Vortical structure in the wake of a transverse jet Fric, T. F.; Roshko, A. Journal of Fluid Mechanics, Vol. 279 https://doi.org/10.1017/S0022112094003800	journal	November 1994
The effect of vortex generators on a jet in a cross‐flow Zaman, K. B. M. Q.; Foss, J. K. Physics of Fluids, Vol. 9, Issue 1 https://doi.org/10.1063/1.869154	journal	January 1997
Free-Stream Turbulence Effects on Film Cooling With Shaped Holes Saumweber, Christian; Schulz, Achmed; Wittig, Sigmar Journal of Turbomachinery, Vol. 125, Issue 1 https://doi.org/10.1115/1.1515336	journal	January 2003
A Review of Shaped Hole Turbine Film-Cooling Technology Bunker, Ronald S. Journal of Heat Transfer, Vol. 127, Issue 4 https://doi.org/10.1115/1.1860562	journal	March 2005
Increasing Adiabatic Film-Cooling Effectiveness by Using an Upstream Ramp Na, Sangkwon; Shih, Tom I-P. Journal of Heat Transfer, Vol. 129, Issue 4 https://doi.org/10.1115/1.2709965	journal	December 2006
Film Cooling With Compound Angle Holes: Heat Transfer Sen, B.; Schmidt, D. L.; Bogard, D. G. Journal of Turbomachinery, Vol. 118, Issue 4 https://doi.org/10.1115/1.2840937	journal	October 1996
Influence of the Hole Length-to-Diameter Ratio on Film Cooling With Cylindrical Holes Lutum, E.; Johnson, B. V. Journal of Turbomachinery, Vol. 121, Issue 2 https://doi.org/10.1115/1.2841303	journal	April 1999
Flowfield Measurements for Film-Cooling Holes With Expanded Exits Thole, K.; Gritsch, M.; Schulz, A. Journal of Turbomachinery, Vol. 120, Issue 2 https://doi.org/10.1115/1.2841410	journal	April 1998
Heat Transfer, Adiabatic Effectiveness, and Injectant Distributions Downstream of a Single Row and Two Staggered Rows of Compound Angle Film-Cooling Holes Ligrani, P. M.; Ciriello, S.; Bishop, D. T. Journal of Turbomachinery, Vol. 114, Issue 4 https://doi.org/10.1115/1.2928021	journal	October 1992
Discrete-Jet Film Cooling: A Comparison of Computational Results With Experiments Leylek, J. H.; Zerkle, R. D. Journal of Turbomachinery, Vol. 116, Issue 3 https://doi.org/10.1115/1.2929422	journal	July 1994
Flat-Plate Film Cooling With Steam Injection Through One Row and Two Rows of Inclined Holes Han, J. C.; Mehendale, A. B. Journal of Turbomachinery, Vol. 108, Issue 1 https://doi.org/10.1115/1.3262013	journal	July 1986
Recent Advances in Turbine Heat Transfer—With A View of Transition to Coal-Gas Based Systems Chyu, Minking K. Journal of Heat Transfer, Vol. 134, Issue 3 https://doi.org/10.1115/1.4005148	journal	January 2012
Computations of Film Cooling From Holes With Struts Shih, T. I-P.; Lin, Y. -L.; Chyu, M. K. Volume 3: Heat Transfer; Electric Power; Industrial and Cogeneration https://doi.org/10.1115/99-GT-282	conference	June 1999
Momentum-Preserving Shaped Holes for Film Cooling Shih, T. I. -P.; Na, S. ASME Turbo Expo 2007: Power for Land, Sea, and Air, Volume 4: Turbo Expo 2007, Parts A and B https://doi.org/10.1115/GT2007-27600	conference	March 2009
Downstream Vortex Generators to Enhance Film-Cooling Effectiveness Lee, Chien-Shing; Bryden, Kenneth M.; Shih, Tom I-P. Volume 7B: Heat Transfer https://doi.org/10.1115/GT2020-14317	conference	September 2020
Turbine Airfoil Leading Edge Film Cooling Bibliography: 1972–1998 Kercher, D. M. International Journal of Rotating Machinery, Vol. 6, Issue 5 https://doi.org/10.1155/S1023621X00000294	journal	January 2000
A Film-Cooling CFD Bibliography: 1971–1996 Kercher, D. M. International Journal of Rotating Machinery, Vol. 4, Issue 1 https://doi.org/10.1155/S1023621X98000062	journal	January 1998
Thermophysical properties of stainless steels Kim, C. S. https://doi.org/10.2172/4152287	report	September 1975
Inclined Jet in Crossflow Interacting with a Vortex Generator Zaman, K. B. M. Q.; Rigby, D. L.; Heidmann, J. D. Journal of Propulsion and Power, Vol. 26, Issue 5 https://doi.org/10.2514/1.49742	journal	September 2010
Identifying Weaknesses in Eddy-Viscosity Models for Predicting Film Cooling via Large-Eddy Simulations Stratton, Zachary T.; Shih, Tom I-P. Journal of Propulsion and Power, Vol. 35, Issue 3 https://doi.org/10.2514/1.B37314	journal	May 2019
Flat Surface Film Cooling from Cylindrical Holes with Discrete Tabs Nasir, Hasan; Ekkad, Srinath V.; Acharya, Sumanta Journal of Thermophysics and Heat Transfer, Vol. 17, Issue 3 https://doi.org/10.2514/2.6786	journal	July 2003
An experimental study of film cooling from diffused trapezoidal shaped holes Makki, Y.; Jakubowski, G. 4th Thermophysics and Heat Transfer Conference https://doi.org/10.2514/6.1986-1326	conference	June 1986

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