Details
| Original language | English |
|---|---|
| Pages (from-to) | 14-26 |
| Number of pages | 13 |
| Journal | CIRP Journal of Manufacturing Science and Technology |
| Volume | 3 |
| Issue number | 1 |
| Publication status | Published - 15 Sept 2010 |
Abstract
In contrast to smooth surfaces, microstructured riblet surfaces can reduce the near-wall shear stresses of a turbulent flow by up to 10%. In the case of compressor blades, riblet structures with a width between 20 and 120. μm and a profile aspect ratio of 0.5 are required, which have to be machined directly onto the metal surface. In this paper, a profile grinding process with multiple V-shaped microprofiles has been applied for the manufacturing of such riblet structures on extensive surfaces. In fluid dynamic investigations in the oil channel and in the cascade wind tunnel, the ground riblet structures have proven their ability to reduce skin friction by up to 4%.
Keywords
- Drag reduction, Functional structures, Profile dressing, Profile grinding, Riblets
ASJC Scopus subject areas
- Engineering(all)
- Industrial and Manufacturing Engineering
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In: CIRP Journal of Manufacturing Science and Technology, Vol. 3, No. 1, 15.09.2010, p. 14-26.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Manufacturing of functional riblet structures by profile grinding
AU - Denkena, Berend
AU - Köhler, Jens
AU - Wang, Bo
N1 - Funding information: The work presented in this article has been supported by the German Research Foundation (DFG) within the frame of the joint project PAK182 “Riblets for Compressor Blades”, subproject DE447/17.
PY - 2010/9/15
Y1 - 2010/9/15
N2 - In contrast to smooth surfaces, microstructured riblet surfaces can reduce the near-wall shear stresses of a turbulent flow by up to 10%. In the case of compressor blades, riblet structures with a width between 20 and 120. μm and a profile aspect ratio of 0.5 are required, which have to be machined directly onto the metal surface. In this paper, a profile grinding process with multiple V-shaped microprofiles has been applied for the manufacturing of such riblet structures on extensive surfaces. In fluid dynamic investigations in the oil channel and in the cascade wind tunnel, the ground riblet structures have proven their ability to reduce skin friction by up to 4%.
AB - In contrast to smooth surfaces, microstructured riblet surfaces can reduce the near-wall shear stresses of a turbulent flow by up to 10%. In the case of compressor blades, riblet structures with a width between 20 and 120. μm and a profile aspect ratio of 0.5 are required, which have to be machined directly onto the metal surface. In this paper, a profile grinding process with multiple V-shaped microprofiles has been applied for the manufacturing of such riblet structures on extensive surfaces. In fluid dynamic investigations in the oil channel and in the cascade wind tunnel, the ground riblet structures have proven their ability to reduce skin friction by up to 4%.
KW - Drag reduction
KW - Functional structures
KW - Profile dressing
KW - Profile grinding
KW - Riblets
UR - http://www.scopus.com/inward/record.url?scp=78649444197&partnerID=8YFLogxK
U2 - 10.1016/j.cirpj.2010.08.001
DO - 10.1016/j.cirpj.2010.08.001
M3 - Article
AN - SCOPUS:78649444197
VL - 3
SP - 14
EP - 26
JO - CIRP Journal of Manufacturing Science and Technology
JF - CIRP Journal of Manufacturing Science and Technology
SN - 1755-5817
IS - 1
ER -