With the advance of direct metal laser sintering (DMLS), also generically referred to as additive manufacturing (AM), novel geometric features of internal channels for gas turbine cooling can be achieved beyond those features using traditional manufacturing techniques. There are many variables, however, in the DMLS process that affect the final quality of the part. Of most interest to gas turbine heat transfer designers are the roughness levels and tolerance levels that can be held for the internal channels. This study investigates the effect of DMLS build direction and channel shape on the pressure loss and heat transfer measurements of small-scale channels. Results indicate that differences in pressure loss occur between the test cases with differing channel shapes and build directions, while little change is measured in heat transfer performance.
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Build Direction Effects on Additively Manufactured Channels
Jacob C. Snyder,
Jacob C. Snyder
Mem. ASME
Department of Mechanical
and Nuclear Engineering,
The Pennsylvania State University,
127 Reber Building,
University Park, PA 16802
e-mail: jacob.snyder@psu.edu
Department of Mechanical
and Nuclear Engineering,
The Pennsylvania State University,
127 Reber Building,
University Park, PA 16802
e-mail: jacob.snyder@psu.edu
Search for other works by this author on:
Curtis K. Stimpson,
Curtis K. Stimpson
Mem. ASME
Department of Mechanical
and Nuclear Engineering,
The Pennsylvania State University,
127 Reber Building,
University Park, PA 16802
e-mail: curtis.stimpson@psu.edu
Department of Mechanical
and Nuclear Engineering,
The Pennsylvania State University,
127 Reber Building,
University Park, PA 16802
e-mail: curtis.stimpson@psu.edu
Search for other works by this author on:
Karen A. Thole,
Karen A. Thole
Mem. ASME
Department of Mechanical
and Nuclear Engineering,
The Pennsylvania State University,
136 Reber Building,
University Park, PA 16802
e-mail: kthole@psu.edu
Department of Mechanical
and Nuclear Engineering,
The Pennsylvania State University,
136 Reber Building,
University Park, PA 16802
e-mail: kthole@psu.edu
Search for other works by this author on:
Dominic Mongillo
Dominic Mongillo
Search for other works by this author on:
Jacob C. Snyder
Mem. ASME
Department of Mechanical
and Nuclear Engineering,
The Pennsylvania State University,
127 Reber Building,
University Park, PA 16802
e-mail: jacob.snyder@psu.edu
Department of Mechanical
and Nuclear Engineering,
The Pennsylvania State University,
127 Reber Building,
University Park, PA 16802
e-mail: jacob.snyder@psu.edu
Curtis K. Stimpson
Mem. ASME
Department of Mechanical
and Nuclear Engineering,
The Pennsylvania State University,
127 Reber Building,
University Park, PA 16802
e-mail: curtis.stimpson@psu.edu
Department of Mechanical
and Nuclear Engineering,
The Pennsylvania State University,
127 Reber Building,
University Park, PA 16802
e-mail: curtis.stimpson@psu.edu
Karen A. Thole
Mem. ASME
Department of Mechanical
and Nuclear Engineering,
The Pennsylvania State University,
136 Reber Building,
University Park, PA 16802
e-mail: kthole@psu.edu
Department of Mechanical
and Nuclear Engineering,
The Pennsylvania State University,
136 Reber Building,
University Park, PA 16802
e-mail: kthole@psu.edu
Dominic Mongillo
1Corresponding author.
Contributed by the International Gas Turbine Institute (IGTI) of ASME for publication in the JOURNAL OF TURBOMACHINERY. Manuscript received November 16, 2015; final manuscript received November 22, 2015; published online January 20, 2016. Editor: Kenneth C. Hall.
J. Turbomach. May 2016, 138(5): 051006 (8 pages)
Published Online: January 20, 2016
Article history
Received:
November 16, 2015
Revised:
November 22, 2015
Citation
Snyder, J. C., Stimpson, C. K., Thole, K. A., and Mongillo, D. (January 20, 2016). "Build Direction Effects on Additively Manufactured Channels." ASME. J. Turbomach. May 2016; 138(5): 051006. https://doi.org/10.1115/1.4032168
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