In order to study the cooling performance of impingement/effusion cooling lamilloy contrastively and demonstrate the possibility of using impingement/effusion cooling lamilloy as heat shield in afterburner

a series of three-dimensional numerical simulations using fluid/solid conjugated computation method of heat transfer were conducted under three different total pressure ratio of the primary fluid to the secondary fluid conditions

and contrastive studies were carried out with both a type of corrugated heat shield and a single flat plate heat shield. Contrastive results of cooling performance

coolant consumption

coolant heat load and total pressure loss coefficient of the secondary flow were acquired. The results show that impingement/effusion cooling lamilloy has good cooling performance

but it is most affected by the change of total pressure ratio. Compared with conventional corrugated heat shield

the coolant consumption of impingement/effusion cooling lamilloy decreases by 41.6% averagely

and the coolant heat load decreases by 65.9% averagely.