TY - GEN
T1 - 4th Rotor Hub Flow Prediction Workshop Experimental Data Campaigns & Computational Analyses
AU - Schmitz, Sven
AU - Reich, David
AU - Jaffa, Nicholas
N1 - Publisher Copyright:
Copyright © 2023 by the Vertical Flight Society. All rights reserved.
PY - 2023
Y1 - 2023
N2 - The rotor hub flow prediction workshops are held bi-annually at Penn State's Vertical Lift Research Center of Excellence (VLRCOE) to support academia, industry, and government in validating state-of-the-art computational fluid dynamics (CFD) tools. Initiated with support from VLRCOE, the National Rotorcraft Technology Center (NRTC), and the Fluid Dynamics Research Consortium (FDRC) at Penn State, these workshops have been compelling examples of productive exchanges between experimentalists and computational researchers and have had positive impact on both planning new experiments and subsequent computational grid and method development. There is continued interest in these comparisons as rotor hub flows are characterized by complex turbulent flow fields, while at the same time being a primary contributor to helicopter parasite drag. High-Reynolds number testing of rotor hub flows is necessary as high-Reynolds turbulent coherent structures remain strong for long distances downstream of the hub and up to the long-age wake where they interact with the empennage and tail. Basic research conducted at Penn State's water tunnel facilities has provided such unique high Reynolds-scale data of rotor hub wakes, providing new data for physical understanding and CFD validation. This paper summarizes the experimental data campaigns and 'blind comparison' computational results presented at the fourth rotor hub flow prediction workshop.
AB - The rotor hub flow prediction workshops are held bi-annually at Penn State's Vertical Lift Research Center of Excellence (VLRCOE) to support academia, industry, and government in validating state-of-the-art computational fluid dynamics (CFD) tools. Initiated with support from VLRCOE, the National Rotorcraft Technology Center (NRTC), and the Fluid Dynamics Research Consortium (FDRC) at Penn State, these workshops have been compelling examples of productive exchanges between experimentalists and computational researchers and have had positive impact on both planning new experiments and subsequent computational grid and method development. There is continued interest in these comparisons as rotor hub flows are characterized by complex turbulent flow fields, while at the same time being a primary contributor to helicopter parasite drag. High-Reynolds number testing of rotor hub flows is necessary as high-Reynolds turbulent coherent structures remain strong for long distances downstream of the hub and up to the long-age wake where they interact with the empennage and tail. Basic research conducted at Penn State's water tunnel facilities has provided such unique high Reynolds-scale data of rotor hub wakes, providing new data for physical understanding and CFD validation. This paper summarizes the experimental data campaigns and 'blind comparison' computational results presented at the fourth rotor hub flow prediction workshop.
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M3 - Conference contribution
AN - SCOPUS:85167655392
T3 - FORUM 2023 - Vertical Flight Society 79th Annual Forum and Technology Display
BT - FORUM 2023 - Vertical Flight Society 79th Annual Forum and Technology Display
PB - Vertical Flight Society
T2 - 79th Vertical Flight Society Annual Forum and Technology Display, FORUM 2023
Y2 - 16 May 2023 through 18 May 2023
ER -