Patent ID: 8608443

Claim:
A component wall in a turbine engine comprising: a substrate having a first surface and a second surface opposed from said first surface; a trench located in said second surface, said trench defined by a bottom surface between said first and second surfaces, a first sidewall, and a second sidewall spaced from said first sidewall, said first sidewall extending radially outwardly continuously from said bottom surface of said trench to said second surface, said first sidewall comprising a plurality of first protuberances extending toward said second sidewall and said second sidewall comprising a plurality of second protuberances extending toward said first sidewall; and a plurality of cooling passages extending through said substrate from said first surface to said bottom surface of said trench, wherein outlets of said cooling passages are arranged within said trench such that cooling air exiting said cooling passages through said outlets is directed toward respective ones of said first protuberances of said first sidewall.