Tomographic flow measurements over additively manufactured cooling channel roughness

Additive manufacturing (AM) offers many potential advantages to constructing gas turbine components such as allowing for more complex geometry in carefully optimized designs. AM processes, such as direct laser sintering, create roughness with distinct characteristics including periodicity from layers of fused material and varying roughness element size depending on surface print orientation. Understanding how this affects airflow through micro cooling channels is essential for component design. Individual roughness elements may block up to 15