LUO Guo-liang, YANG Wei-hua, CAO Jun, et al. Experimental study of discharge coefficient and cooling effectiveness for impingement effusion cooling in curved section[J]. 2011, 26(8).
LUO Guo-liang, YANG Wei-hua, CAO Jun, et al. Experimental study of discharge coefficient and cooling effectiveness for impingement effusion cooling in curved section[J]. 2011, 26(8).DOI:
In order to experimentally study the discharge coefficient and cooling effectiveness of impingement effusion cooling in curved section of combustion chamber
several test pieces with different geometrical dimensions were designed.The research results from experimental study show that: (1) The discharge coefficient of impingement effusion dimension in curved section is less than 0.7.The discharge coefficient of effusion hole angle 40° is larger than the discharge coefficient of effusion hole angle 30° and 20°
and the spacing between effusion holes has a great influence on the discharge coefficient. (2) The cooling effectiveness of impingement effusion in curved section is increased with the increase of blowing ration.And there is a large difference for the cooling effectiveness of impingement effusion between curved and flat sections
and the difference is decreased with the increase of blowing ratio.