INFLUENCE OF DEFLECTION HOLE ANGLE ON EFFUSION COOLING IN A REAL COMBUSTION CHAMBER CONDITION
Abstract
Fluid-solid coupling simulation is conducted to investigate the performance of effusion cooling in the real combustion chamber condition of strong rotation and primary holes. The wall temperature and film cooling effectiveness of different deflection angle is analyzed. From the results, it is concluded that the performance of effusion is better than conventional film cooling. The wall temperature and gradient is lower, the cooling efficiency is higher and the coolant is reduced by 20%, but pressure loss is slightly increased. The cooling effectiveness decreases behind primary holes because of local combustion. Comparison with the effect of deflection angle, the cooling performance of 60 deg deflection angle is best. The coolant is better attached to the wall downstream when the deflection angle is same as the rotating mainstream. In addition, the effect of deflection angle is not so significant on the coolant flow rate, but a large negative impact on the pressure loss. Although the cooling effectiveness of 60 deg deflection angle is highest, the total pressure recovery coefficient is lower. The maximum temperature drops about 70K and the outlet temperature distribution trends more consistent. So various factors should be taken into consideration when designing of deflection angle.
Dates
- Submission Date2014-01-07
- Revision Date2014-02-27
- Acceptance Date2014-03-08
- Online Date2014-04-05
References
- Lefebvre, A. H., Ballal, D. R., Bahr, D. W., Gas turbine combustion: alternative fuels and emissions, Boca Raton, FL: CRC Press, 2010
- Li, L., Peng, X. F., Liu, T., Combustion and cooling performance in an aero-engine annular combustor, Applied thermal engineering, 26 (2006), 16, pp. 1771-1779
- Ali, A. B. S., Kriaa, W., Mhiri, H., Numerical investigations of cooling holes system role in the protection of the walls of a gas turbine combustion chamber, Heat and Mass Transfer, 48 (2012), 5, pp. 779-788
- Yu, Z., Xu, T., Li, J., Comparison of a series of double chamber models with various hole angles for enhancing cooling effectiveness, International Communications in Heat and Mass Transfer, 44 (2013), pp. 38-44
- Andrews, G. E., Asere, A. A., Gupta, M. L., Full coverage discrete hole film cooling- The influence of hole size, International Journal of Turbo and Jet-Engines, 2 (1985), 3, pp. 213-225
- Andrews, G. E., Hussain, I., Small diameter film cooling holes: the influence of hole size and pitch, International Journal of Turbo and Jet Engines, 5 (1988), 1-4, pp. 61-72
- Andrews, G. E., Gupta, M. L., Mkpadi, M. C., Full Coverage Discrete Hole Film Cooling: Cooling Effectiveness, International Journal of Turbo and Jet-Engines, 2 (1985), 3, pp. 199-212
- Lin, Y., Song, B., Li, B., Investigation of film cooling effectiveness of full-coverage inclined multihole walls with different hole arrangements, Proceedings, ASME Turbo Expo 2003: Power for Land, Sea, and Air, Atlanta, Georgia, USA, 2003, Vol. 5, pp. 651-660
- Zhang, C., Lin, Y., Xu, Q., Cooling effectiveness of effusion walls with deflection hole angles measured by infrared imaging, Applied Thermal Engineering, 29 (2009), 5, pp. 966-972
- Lin, Y., Song, B., Li, B., Measured film cooling effectiveness of three multihole patterns, Journal of heat transfer, 128 (2006), 2, pp. 192-197
- Scrittore, J. J., Thole, K. A., Burd, S. W., Experimental characterization of film-cooling effectiveness near combustor dilution holes, Proceedings, ASME Turbo Expo 2005: Power for Land, Sea, and Air, Reno, Nevada, USA, 2005, Vol. 3, pp. 1339-1347
- Scrittore, J. J., Thole, K. A., Burd, S. W., Investigation of velocity profiles for effusion cooling of a combustor liner, Journal of turbomachinery, 129 (2007), 3, pp. 518-526
- Goldstein, R. J., Jin, P., Film cooling downstream of a row of discrete holes with compound angle, Journal of turbomachinery, 123 (2001), 2, pp. 222-230
- Ling, J. C. P. W., Ireland, P. T., Tumer, L., Full Coverage Film Cooling for Combustor Transition Sections, Proceedings, ASME Turbo Expo 2002: Power for Land, Sea, and Air, Amsterdam, The Netherlands, 2002, Vol. 3, pp. 1011-1021
- Gustafsson, K. M., Johansson, T. G., An experimental study of surface temperature distribution on effusion-cooled plates, Journal of engineering for gas turbines and power, 123 (2001), 2, pp. 308-316
- Yang, C., Zhang, J., Influence of Multi-hole Arrangement on Cooling Film Development, Chinese Journal of Aeronautics, 25 (2012), 2, pp. 182-188
- Harrington, M. K., McWaters, M. A., Bogard, D. G., Full-coverage film cooling with short normal injection holes, Journal of turbomachinery, 123 (2001), 4, pp. 798-805
- Tarchi, L., Facchini, B., Maiuolo, F., Experimental investigation on the effects of a large recirculating area on the performance of an effusion cooled combustor liner, Journal of engineering for gas turbines and power, 134 (2012), 4
- Rohani, B., Saqr, K. M., Effects of hydrogen addition on the structure and pollutant emissions of a turbulent unconfined swirling flame, International Communications in Heat and Mass Transfer,39 (2012), 5, pp. 681-688
- Zeinivand, H., Bazdidi-Tehrani, F., Influence of stabilizer jets on combustion characteristics and NOx emission in a jet-stabilized combustor, Applied Energy, 92 (2012), pp. 348-360
- Murthy, J. Y., Mathur, S. R., Finite volume method for radiative heat transfer using unstructured meshes, Journal of thermophysics and heat transfer, 12 (1998), 3, pp. 313-321
- Dang, X. X., Experimental Investigation and Numerical Simulation of A Gas Turbine Annular Combustor with Dual-stage Swirler, Ph.D. thesis, Nanjing University of Aeronautics and Astronautics, Nanjing , China, 2009