Next Article in Journal
Liquid Air as an Energy Carrier for Liquefied Natural Gas Cold Energy Distribution in Cold Storage Systems
Next Article in Special Issue
Modelling a Heaving Point-Absorber with a Closed-Loop Control System Using the DualSPHysics Code
Previous Article in Journal
Energy-Efficient Device Discovery Mechanism for Device-to-Device Communications in 5G Networks
Previous Article in Special Issue
Investigation of Turbulence Modeling for Point-Absorber-Type Wave Energy Converters
Open AccessArticle

Highly Accurate Experimental Heave Decay Tests with a Floating Sphere: A Public Benchmark Dataset for Model Validation of Fluid–Structure Interaction

1
Department of the Built Environment, Aalborg University (AAU), Thomas Mann Vej 23, 9220 Aalborg, Denmark
2
Floating Power Plant (FPP), Park Allé 382, 2625 Vallensbæk, Denmark
3
Sintex, Jyllandsvej 14, 9500 Hobro, Denmark
4
Department of Mechanical Engineering, Technical University of Denmark (DTU), Nils Koppels Allé, Building 403, 2800 Kgs Lyngby, Denmark
5
School of Engineering, Computing and Mathematics, University of Plymouth (UoP), Plymouth, Devon PL4 8AA, UK
6
National Renewable Energy Laboratory (NREL), 15013 Denver West Parkway, Golden, CO 80401, USA
7
Department of Fluid Mechanics, Budapest University of Technology and Economics, Műegyetem rkp. 3, 1111 Budapest, Hungary
8
Department of Mechanics and Maritime Sciences, Chalmers University of Technology (CTH), 40482 Gothenburg, Sweden
9
Ramboll Group A/S, Hannemanns Allé 53, DK-2300 Copenhagen S, Denmark
10
Research Institutes of Sweden (RISE), P.O. Box 857, SE-50115 Borås, Sweden
*
Author to whom correspondence should be addressed.
Energies 2021, 14(2), 269; https://doi.org/10.3390/en14020269
Received: 27 November 2020 / Revised: 16 December 2020 / Accepted: 21 December 2020 / Published: 6 January 2021
Highly accurate and precise heave decay tests on a sphere with a diameter of 300 mm were completed in a meticulously designed test setup in the wave basin in the Ocean and Coastal Engineering Laboratory at Aalborg University, Denmark. The tests were dedicated to providing a rigorous benchmark dataset for numerical model validation. The sphere was ballasted to half submergence, thereby floating with the waterline at the equator when at rest in calm water. Heave decay tests were conducted, wherein the sphere was held stationary and dropped from three drop heights: a small drop height, which can be considered a linear case, a moderately nonlinear case, and a highly nonlinear case with a drop height from a position where the whole sphere was initially above the water. The precision of the heave decay time series was calculated from random and systematic standard uncertainties. At a 95% confidence level, uncertainties were found to be very low—on average only about 0.3% of the respective drop heights. Physical parameters of the test setup and associated uncertainties were quantified. A test case was formulated that closely represents the physical tests, enabling the reader to do his/her own numerical tests. The paper includes a comparison of the physical test results to the results from several independent numerical models based on linear potential flow, fully nonlinear potential flow, and the Reynolds-averaged Navier–Stokes (RANS) equations. A high correlation between physical and numerical test results is shown. The physical test results are very suitable for numerical model validation and are public as a benchmark dataset. View Full-Text
Keywords: physical tests; sphere; benchmark dataset; heave decay; wave energy converters; linear potential flow; fully nonlinear potential flow; CFD; RANS; fluid–structure interaction physical tests; sphere; benchmark dataset; heave decay; wave energy converters; linear potential flow; fully nonlinear potential flow; CFD; RANS; fluid–structure interaction
Show Figures

Graphical abstract

MDPI and ACS Style

Kramer, M.B.; Andersen, J.; Thomas, S.; Bendixen, F.B.; Bingham, H.; Read, R.; Holk, N.; Ransley, E.; Brown, S.; Yu, Y.-H.; Tran, T.T.; Davidson, J.; Horvath, C.; Janson, C.-E.; Nielsen, K.; Eskilsson, C. Highly Accurate Experimental Heave Decay Tests with a Floating Sphere: A Public Benchmark Dataset for Model Validation of Fluid–Structure Interaction. Energies 2021, 14, 269. https://doi.org/10.3390/en14020269

AMA Style

Kramer MB, Andersen J, Thomas S, Bendixen FB, Bingham H, Read R, Holk N, Ransley E, Brown S, Yu Y-H, Tran TT, Davidson J, Horvath C, Janson C-E, Nielsen K, Eskilsson C. Highly Accurate Experimental Heave Decay Tests with a Floating Sphere: A Public Benchmark Dataset for Model Validation of Fluid–Structure Interaction. Energies. 2021; 14(2):269. https://doi.org/10.3390/en14020269

Chicago/Turabian Style

Kramer, Morten B.; Andersen, Jacob; Thomas, Sarah; Bendixen, Flemming B.; Bingham, Harry; Read, Robert; Holk, Nikolaj; Ransley, Edward; Brown, Scott; Yu, Yi-Hsiang; Tran, Thanh T.; Davidson, Josh; Horvath, Csaba; Janson, Carl-Erik; Nielsen, Kim; Eskilsson, Claes. 2021. "Highly Accurate Experimental Heave Decay Tests with a Floating Sphere: A Public Benchmark Dataset for Model Validation of Fluid–Structure Interaction" Energies 14, no. 2: 269. https://doi.org/10.3390/en14020269

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop