Numerical Study of Flow and Heat Transfer Characteristics of Impingement/Effusion Cooling

作者：Zhang Jingzhou^*; Xie Hao; Yang Chengfeng

来源：Chinese Journal of Aeronautics, 2009, 22(4): 343-348.

DOI：10.1016/S1000-9361(08)60109-0

• impingement/effusion
• blowing ratio
• cooling effectiveness
• heat transfer
• numerical simulation

Three-dimensional numerical simulation is carried out to investigate the flow and heat transfer characteristics of impingement/effusion cooling systems. The impingement/effusion holes are arranged on two parallel perforated plates respectively in a staggered manner. Every effusion hole has an inclined angle of 30 degrees with respect to the surface. The two parallel plates are spaced three times the diameter of the effusion hole. The ratio of center-to-center spacing of adjacent holes to the diameter of the effusion hole is set to be 3.0, 4.0 and 5.0 respectively. The flow field, temperature field and wall film cooling effectiveness are calculated for different blowing ratios ranging from 0.5 to 1.5. In general, the wall cooling effectiveness increases as the center-to-center spacing of adjacent holes decreases or the blowing ratio increases.

• 出版日期2009-8
• 单位南京航空航天大学; 南京师范大学