Validation of CFD simulations of the moored DeepCwind offshore wind semisubmersible in irregular waves

Wang, Lu; Robertson, Amy; Kim, Jang; Jang, Hyunchul; Shen, Zhirong; Koop, Arjen; Bunnik, Tim; Yu, Kaikai

doi:10.1016/j.oceaneng.2022.112028

Cited by 19 publications

(7 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, the coupled analyses of FWTS are restricted to regular wave conditions, where the system behavior is investigated under several monochromatic wave conditions. In other words, simulations of realistic irregular sea states are not common due mainly to a high computational cost emanating from the requirement of a relatively long simulation physical time, which is usually up to 3 h to capture all the necessary nonlinear and low-frequency effects [350]. This kind of simulation has become more common very recently, especially for assessing floater behavior in real sea states, where the irregular sea is generated by a low-order model typically based on the nonlinear PF theory and then imported to a CFD model using a one-way coupling scheme.…”

Section: Final Remarks On High-fidelity Modelsmentioning

confidence: 99%

“…This kind of simulation has become more common very recently, especially for assessing floater behavior in real sea states, where the irregular sea is generated by a low-order model typically based on the nonlinear PF theory and then imported to a CFD model using a one-way coupling scheme. This allows for the reduction of the CFD domains, reducing the computational demand [350,351]. Finally, it is worthwhile to mention that to capture the transient motions of the moving part of an FWTS, several methods, such as the moving reference frame, sliding mesh, and overset methods, are used [46,75,79,135,143,208,209].…”

Section: Final Remarks On High-fidelity Modelsmentioning

confidence: 99%

See 1 more Smart Citation

A Review of Numerical and Physical Methods for Analyzing the Coupled Hydro–Aero–Structural Dynamics of Floating Wind Turbine Systems

Maali Amiri,

Shadman,

Estefen

2024

JMSE

View full text Add to dashboard Cite

Recently, more wind turbine systems have been installed in deep waters far from the coast. Several concepts of floating wind turbine systems (FWTS) have been developed, among which, the semi-submersible platform—due to its applicability in different water depths, good hydrodynamic performance, and facility in the installation process—constitutes the most explored technology compared to the others. However, a significant obstacle to the industrialization of this technology is the design of a cost-effective FWTS, which can be achieved by optimizing the geometry, size, and weight of the floating platform, together with the mooring system. This is only possible by selecting a method capable of accurately analyzing the FWTS-coupled hydro–aero–structural dynamics at each design stage. Accordingly, this paper provides a detailed overview of the most commonly coupled numerical and physical methods—including their basic assumptions, formulations, limitations, and costs used for analyzing the dynamics of FWTS, mainly those supported by a semi-submersible—to assist in the choice of the most suitable method at each design phase of the FWTS. Finally, this article discusses possible future research directions to address the challenges in modeling FWTS dynamics that persist to date.

show abstract

Section: Final Remarks On High-fidelity Modelsmentioning

confidence: 99%

Section: Final Remarks On High-fidelity Modelsmentioning

confidence: 99%

A Review of Numerical and Physical Methods for Analyzing the Coupled Hydro–Aero–Structural Dynamics of Floating Wind Turbine Systems

Maali Amiri,

Shadman,

Estefen

2024

JMSE

View full text Add to dashboard Cite

show abstract

“…Moreover, the coupled analyses of FWTSs are restricted to regular wave conditions, where the system behavior is investigated under several monochromatic wave conditions. In other words, simulations of realistic irregular sea states are not common due mainly to a high computational cost emanating from the requirement of a relatively long simulation physical time, which is usually up to 3 hours to capture all the necessary nonlinear and low-frequency effects [165]. This kind of simulation has become more common very recently, especially for assessing floater behavior in real sea states, where the irregular sea is generated by a low-order model typically based on nonlinear PF theory and then imported to a CFD model using a one-way coupling scheme.…”

Section: Final Remarks On Coupled Cfd-fea Modelsmentioning

confidence: 99%

Section: Final Remarks On Coupled Cfd-fea Modelsmentioning

confidence: 99%

A Review of Numerical and Physical Methods to Analyze the Coupled Hydro-Aero-Structural Dynamics of Floating Wind Turbine Systems

Amiri,

Shadman,

Estefen

2023

Preprint

View full text Add to dashboard Cite

Recently, more wind turbine systems are being installed in deep waters far from the coast. Several concepts of floating wind turbine systems (FWTSs) are developed, among which the semisubmersible platform, due to its applicability in different water depths, good hydrodynamic performance, and facility in the installation process, constitutes the most explored technology compared to the others. However, a significant obstacle to the industrialization of this technology is a design of a cost-effective FWTS, which can be achieved by optimizing the geometry, size and weight of the floating platform, along with the mooring system. This is only possible by selecting a method capable of accurately analyzing the FWTS coupled hydro-aero-structural dynamics at each design stage. Accordingly, this paper aims at providing a detailed overview of the most common coupled numerical and physical methods, including their basic assumptions, formulations, limitations, and costs, used for analyzing the dynamics of FWTSs, mainly those supported by a semisubmersible, to assist the choice of the most suitable method at each design phase of FWTSs. Finally, the article discusses possible future research to address challenges in modeling FWTSs dynamics that persist to date.

show abstract

“…Extensive literature exists on the application of computational fluid dynamics simulations to offshore structures. CFD has also been widely applied to predict the response of a moored floating wind platform to wave excitation [5] [6].…”

Section: Introductionmentioning

confidence: 99%

Effect of body motion on the wave loads computed with CFD on the INO-WINDMOOR floater

Califano,

Berthelsen,

Magalhaes Duque Da Fonseca

2023

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

CFD simulations were carried out on the 1:40 model of the INO WINDMOOR floater in regular waves to extract hydrodynamic loads, both on the structure, the single columns and sections from each column. Three different approaches for the platform motion were used, (i) fixed, i.e., restrained from motion, (ii) prescribed, i.e., forcing the floater to follow the motion recorded during model tests and (iii) 6 DOF, i.e., allowing the floater to move according to external forces from waves and anchor lines. The obtained results show the effect of the free surface on the local drag forces at sections with different submergences, which are important to include when modelling the motion with simplified methods based on pre-computed force coefficients. A comparison of the surge force shows that the amplitudes of the loads obtained with moving platform are reduced compared to the corresponding fixed case. The mean total surge force computed on the single columns and the whole platform show small quantitative differences between the different methods. The motion responses of the platform for surge and heave obtained with CFD are in fair agreement with the experiments.

show abstract

Validation of CFD simulations of the moored DeepCwind offshore wind semisubmersible in irregular waves

Cited by 19 publications

References 25 publications

A Review of Numerical and Physical Methods for Analyzing the Coupled Hydro–Aero–Structural Dynamics of Floating Wind Turbine Systems

A Review of Numerical and Physical Methods for Analyzing the Coupled Hydro–Aero–Structural Dynamics of Floating Wind Turbine Systems

A Review of Numerical and Physical Methods to Analyze the Coupled Hydro-Aero-Structural Dynamics of Floating Wind Turbine Systems

Effect of body motion on the wave loads computed with CFD on the INO-WINDMOOR floater

Contact Info

Product

Resources

About