TY - CONF
T1 - 2nd rotor hub flow prediction workshop experimental data campaigns & computational analyses
AU - Prof, Sven Schmitz
AU - Tierney, Charles
AU - Metkowski, Leonard
AU - Reich, David
AU - Jaffa, Nicholas
AU - Centolanza, Louis R.
AU - Thomas, Mathew L.
N1 - Funding Information:
The authors are grateful to the US Army’s National Rotorcraft Technology Center program for funding this research. Effort sponsored by the US Government under Other Transaction number W15QKN-10-9-0003 between Vertical Lift Consortium, Inc. and the Government. The US Government is authorized to reproduce and distribute reprints for Governmental purposes notwithstanding any copyright notation thereon. The views and conclusions contained herein are those of the authors and should not be interpreted as necessarily representing the official policies or endorsements, either expressed or implied, of the US Government.
Funding Information:
The Penn State Phase I and III water tunnel tests were supported under VLRCOE task 1.2 at the Pennsylvania State University. Tom Maier, Mahendra Bhagwat (AFDD) and Judah Milgram (Navy) are the technical POCs. This research is partially funded by the Government under Agreement No. W911W6-11-2-0011. The U.S. Government is authorized to reproduce and distribute reprints notwithstanding any copyright notation thereon. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of the U.S. Government.
Funding Information:
The authors are grateful to the US Army?s National Rotorcraft Technology Center program for funding this research. Effort sponsored by the US Government under Other Transaction number W15QKN-10-9-0003 between Vertical Lift Consortium, Inc. and the Government. The US Government is authorized to reproduce and distribute reprints for Governmental purposes notwithstanding any copyright notation thereon. The views and conclusions contained herein are those of the authors and should not be interpreted as necessarily representing the official policies or endorsements, either expressed or implied, of the US Government. The authors are grateful to Mark Potsdam (ADD) for his efforts in providing a Common Helios Mesh (CHM) to workshop participants. Furthermore, we would like to thank the Fluid Dynamics Research Consortium (FDRC) at Penn State for sponsoring this and the previous rotor hub flow prediction workshop. The Penn State Phase I and III water tunnel tests were supported under VLRCOE task 1.2 at the Pennsylvania State University. Tom Maier, Mahendra Bhagwat (AFDD) and Judah Milgram (Navy) are the technical POCs. This research is partially funded by the Government under Agreement No. W911W6-11-2-0011. The U.S. Government is authorized to reproduce and distribute reprints notwithstanding any copyright notation thereon. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of the U.S. Government.
Publisher Copyright:
Copyright © 2019 by the Vertical Flight Society. All rights reserved.
PY - 2019
Y1 - 2019
N2 - The rotor hub assembly is a primary contributor to rotorcraft parasite drag. Reducing hub drag is one mandatory step to enabling future high-speed conventional and compound rotorcraft. The importance of high-Reynolds number testing of rotor hub flows is emphasized by realizing that high-Reynolds number turbulent coherent structures remain strong for long distances downstream up to the long-age wake where they interact with the empennage and tail. Basic research conducted through the Vertical Lift Research Center of Excellence (VLRCOE) at Penn State’s water tunnel facilities has provided unique high Reynolds-scale data of rotor hub wakes, providing new data for physical understanding and validation of computational fluid dynamics (CFD) methods. A first rotor hub flow prediction workshop was held in June 2016; the present paper focuses on ‘blind comparison results’ between experimental data and CFD analyses that were part of the second rotor hub flow prediction workshop at Penn State VLRCOE in May 2018. The hub workshops are the result of a collaboration between Penn State and Georgia Tech VLRCOEs with support from the National Rotorcraft Technology Center (NRTC), including participation from academia, industry, and government. They are compelling examples of productive exchange between experimental and computational efforts that advance the community’s knowledge about these complex flows that are relevant to efficient and safe vertical lift.
AB - The rotor hub assembly is a primary contributor to rotorcraft parasite drag. Reducing hub drag is one mandatory step to enabling future high-speed conventional and compound rotorcraft. The importance of high-Reynolds number testing of rotor hub flows is emphasized by realizing that high-Reynolds number turbulent coherent structures remain strong for long distances downstream up to the long-age wake where they interact with the empennage and tail. Basic research conducted through the Vertical Lift Research Center of Excellence (VLRCOE) at Penn State’s water tunnel facilities has provided unique high Reynolds-scale data of rotor hub wakes, providing new data for physical understanding and validation of computational fluid dynamics (CFD) methods. A first rotor hub flow prediction workshop was held in June 2016; the present paper focuses on ‘blind comparison results’ between experimental data and CFD analyses that were part of the second rotor hub flow prediction workshop at Penn State VLRCOE in May 2018. The hub workshops are the result of a collaboration between Penn State and Georgia Tech VLRCOEs with support from the National Rotorcraft Technology Center (NRTC), including participation from academia, industry, and government. They are compelling examples of productive exchange between experimental and computational efforts that advance the community’s knowledge about these complex flows that are relevant to efficient and safe vertical lift.
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M3 - Paper
AN - SCOPUS:85083946618
T2 - Vertical Flight Society's 75th Annual Forum and Technology Display
Y2 - 13 May 2019 through 16 May 2019
ER -