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High Reynolds Number CFD Benchmark: Introduction and Overview of Wind Tunnel Test Program

Wu, Guangyu and Kramer, Matthew and Ma, Wei and Kim, Jang Whan and Koo, Bonjun and Lim, Ho Joon and Jang, Hyunchul and Lambrakos, Kostas and O'Sullivan, Jim and Van Hinsberg, Nils Paul and Schewe, Günter and Jacobs, Markus (2016) High Reynolds Number CFD Benchmark: Introduction and Overview of Wind Tunnel Test Program. In: OMAE2016: Proceedings of the ASME 35th International Conference on Ocean, Offshore and Arctic Engineering, Vol 1. OMAE 2016, 19.-24. Juni 2016, Busan, Süd Korea.

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Abstract

Recent field measurements indicated that Vortex Induced Motion (VIM) of column-stabilized offshore platform was much smaller than predicted from scaled model test with Reynolds number two orders of magnitude lower than full scale. In order to understand the physical mechanisms that may have caused the discrepancy, Computational Fluid Dynamics (CFD) was applied in previous study to investigate the Reynolds number effect. It was shown that model-scale CFD simulation results agreed well with test data while full-scale CFD simulations indeed predicted a reduction in response amplitude. However, due to lack of well-controlled full-scale test data, it is hard to quantify the accuracy of full-scale CFD simulations. To fill this gap and provide benchmark data for CFD validation, we performed wind tunnel tests in a high pressure wind tunnel in DNW at Göttingen, Germany. The tests were done for single and tandem square column(s) with rounded corners and covered a wide range of Reynolds number from 4 x 10^5 to 1.2 x 10^7. Time history of total fluid forces on the column, time averaged surface pressure at two locations on column surface, and pressure profile in the middle wake were measured for each test. Surface oil-flow technique was applied in selected tests to visualize the flow and interpret the test results. The effects of variation in flow headings and column corner radius were also investigated. A selected subset of the test data are now provided for blind validation with several CFD software/practitioners. This presentation introduces the background of the study and gives an overview of the wind tunnel test program.

Item URL in elib:https://elib.dlr.de/104963/
Document Type:Conference or Workshop Item (Speech)
Title:High Reynolds Number CFD Benchmark: Introduction and Overview of Wind Tunnel Test Program
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Wu, GuangyuChevron USAUNSPECIFIED
Kramer, MatthewChevron USAUNSPECIFIED
Ma, WeiChevron USAUNSPECIFIED
Kim, Jang WhanTechnip USA, Inc.UNSPECIFIED
Koo, BonjunTechnip USA, Inc.UNSPECIFIED
Lim, Ho JoonTechnip USA, Inc.UNSPECIFIED
Jang, HyunchulTechnip USA, Inc.UNSPECIFIED
Lambrakos, KostasTechnip USA, Inc.UNSPECIFIED
O'Sullivan, JimTechnip USA, Inc.UNSPECIFIED
Van Hinsberg, Nils Paulnils.vanhinsberg (at) dlr.deUNSPECIFIED
Schewe, Günterguenter.schewe (at) dlr.deUNSPECIFIED
Jacobs, Markusmarkus.jacobs (at) dnw.aeroUNSPECIFIED
Date:June 2016
Journal or Publication Title:OMAE2016: Proceedings of the ASME 35th International Conference on Ocean, Offshore and Arctic Engineering, Vol 1
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:CFD, wind tunnel, Vortex Induced Motion (VIM), Reynolds number, square column, rounded corner
Event Title:OMAE 2016
Event Location:Busan, Süd Korea
Event Type:international Conference
Event Dates:19.-24. Juni 2016
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Aeroelastic Experiments
Deposited By: van Hinsberg, Dr. Ir. Nils
Deposited On:06 Jul 2016 10:50
Last Modified:06 Jul 2016 10:50

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