Sökning: WFRF:(Pozuelo Ramon) >
Decomposition of th...
Decomposition of the mean friction drag in adverse-pressure-gradient turbulent boundary layers
-
- Fan, Yitong (författare)
- Shanghai Jiao Tong Univ, Sch Aeronaut & Astronaut, Shanghai 200240, Peoples R China.
-
- Li, Weipeng (författare)
- Shanghai Jiao Tong Univ, Sch Aeronaut & Astronaut, Shanghai 200240, Peoples R China.
-
- Atzori, Marco, 1992- (författare)
- KTH,Strömningsmekanik och Teknisk Akustik,SimEx FLOW
-
visa fler...
-
- Pozuelo, Ramon (författare)
- KTH,Teknisk mekanik,SimEx FLOW
-
- Schlatter, Philipp (författare)
- KTH,Strömningsmekanik och Teknisk Akustik
-
- Vinuesa, Ricardo (författare)
- KTH,Strömningsmekanik och Teknisk Akustik,SimEx FLOW
-
visa färre...
-
Shanghai Jiao Tong Univ, Sch Aeronaut & Astronaut, Shanghai 200240, Peoples R China Strömningsmekanik och Teknisk Akustik (creator_code:org_t)
- American Physical Society (APS), 2020
- 2020
- Engelska.
-
Ingår i: Physical Review Fluids. - : American Physical Society (APS). - 2469-990X. ; 5:11
- Relaterad länk:
-
https://urn.kb.se/re...
-
visa fler...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- In this study, we exploit the Renard-Deck identity [J. Fluid Mech. 790, 339 (2016)] to decompose the mean friction drag in adverse-pressure-gradient turbulent boundary layers (APG-TBLs) into three components, associated with viscous dissipation, turbulence kinetic energy production, and spatial growth of the flow, respectively. We consider adverse-pressure-gradient turbulent boundary layers developing on flat plates and airfoils, with friction Reynolds numbers in the range 200 < Re-tau < 2000, and with Rotta-Clauser pressure-gradient parameters (beta) ranging from 0 to 50. The effects of Reynolds number, adverse pressure gradient, and the pressure-gradient history on the contributing components are individually investigated, and special attention is paid to the comparisons with zero-pressure-gradient turbulent boundary layers (ZPG-TBLs). Our results indicate that the inner peaks of the dissipation and production terms are located at y(+) approximate to 6 and y(+) approximate to 16.5, respectively, and their outer peaks scale with the 99% boundary-layer thickness (delta(99)), i.e., y/delta(99) approximate to 0.7 and 0.53, respectively. These results are independent of the friction Reynolds number, the magnitude of beta, and its development history. Moreover, the spatial-growth component is negative in the investigated APG-TBLs, and its magnitude increases with beta.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas