| 摘要 |
PROBLEM TO BE SOLVED: To enhance multi-hole film cooling of combustor liner by providing a clustered group of cooling holes in areas of the liner that would otherwise experience a loss of cooling film effectiveness. SOLUTION: This combustor liner is made up of shells 12, 14 having first and second groups of cooling holes 48, 44 formed therein. The cooling holes of the second group are more closely spaced than the cooling holes of the first group. The second group of cooling holes is located on an area of the shell where the cooling effectiveness is degraded. Preferred locations includes a region of the shell that is subjected to swirl impingement and a spot immediately downstream of a large opening in the shell such as a dilution hole, a borescope hole or an igniter port hole.
|
