1.
G. Fernandes, Kapsenberg; Walree, F. van
Towards Accurate Computations of Active Stabiliser Fins, focusing on Dynamic Stall Conference
15th International Ship Stability Workshop, Stockholm, Sweden, 2016.
@conference{Fernandes2016,
title = {Towards Accurate Computations of Active Stabiliser Fins, focusing on Dynamic Stall},
author = {Fernandes, G., Kapsenberg, G.K., Kerkvliet, M. and Walree, F. van},
url = {http://www.marin.nl/web/Publications/Papers/Towards-Accurate-Computations-of-Active-Stabiliser-Fins-focusing-on-Dynamic-Stall.htm},
year = {2016},
date = {2016-06-13},
booktitle = {15th International Ship Stability Workshop, Stockholm, Sweden},
abstract = {Steps towards accurate and efficient characterisation of the hydrodynamic behaviour of active stabiliser fins have been conducted using computational fluid dynamics. Conditions seen at hydrodynamic testing facilities (Reynolds number = 135,000), with an angle of attack variation described as alpha(t) = 10 deg + 15 deg * sin(omega*t) have been modelled in two dimensions with various RANS turbulence models (k-omega SST, kskl, Spalart-Allmaras & LCTM) for reduced frequencies k=0.1 & 0.05. Solutions were compared to experimental results and results from other calculation methods (LES) and to results from a typical sea keeping code. The results showing the hysteresis loop for CL and CD show that a good agreement was seen to the literature. For seakeeping applications, moderate refinement in time and space is sufficient, and that the k-omega SST turbulence model best matches the CL and CD curves found in the literature. The increased knowledge of stabiliser fins dynamics will be used to improve time-domain seakeeping codes and possible also the control laws for active stabilizer fins},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
Steps towards accurate and efficient characterisation of the hydrodynamic behaviour of active stabiliser fins have been conducted using computational fluid dynamics. Conditions seen at hydrodynamic testing facilities (Reynolds number = 135,000), with an angle of attack variation described as alpha(t) = 10 deg + 15 deg * sin(omega*t) have been modelled in two dimensions with various RANS turbulence models (k-omega SST, kskl, Spalart-Allmaras & LCTM) for reduced frequencies k=0.1 & 0.05. Solutions were compared to experimental results and results from other calculation methods (LES) and to results from a typical sea keeping code. The results showing the hysteresis loop for CL and CD show that a good agreement was seen to the literature. For seakeeping applications, moderate refinement in time and space is sufficient, and that the k-omega SST turbulence model best matches the CL and CD curves found in the literature. The increased knowledge of stabiliser fins dynamics will be used to improve time-domain seakeeping codes and possible also the control laws for active stabilizer fins
2016
G. Fernandes, Kapsenberg; Walree, F. van
Towards Accurate Computations of Active Stabiliser Fins, focusing on Dynamic Stall Conference
15th International Ship Stability Workshop, Stockholm, Sweden, 2016.
Abstract | Links | BibTeX | Tags: Active stabiliser fins, Computational fluid dynamics, Dynamic stall, RANS turbulence models, Roll damping
@conference{Fernandes2016,
title = {Towards Accurate Computations of Active Stabiliser Fins, focusing on Dynamic Stall},
author = {Fernandes, G., Kapsenberg, G.K., Kerkvliet, M. and Walree, F. van},
url = {http://www.marin.nl/web/Publications/Papers/Towards-Accurate-Computations-of-Active-Stabiliser-Fins-focusing-on-Dynamic-Stall.htm},
year = {2016},
date = {2016-06-13},
booktitle = {15th International Ship Stability Workshop, Stockholm, Sweden},
abstract = {Steps towards accurate and efficient characterisation of the hydrodynamic behaviour of active stabiliser fins have been conducted using computational fluid dynamics. Conditions seen at hydrodynamic testing facilities (Reynolds number = 135,000), with an angle of attack variation described as alpha(t) = 10 deg + 15 deg * sin(omega*t) have been modelled in two dimensions with various RANS turbulence models (k-omega SST, kskl, Spalart-Allmaras & LCTM) for reduced frequencies k=0.1 & 0.05. Solutions were compared to experimental results and results from other calculation methods (LES) and to results from a typical sea keeping code. The results showing the hysteresis loop for CL and CD show that a good agreement was seen to the literature. For seakeeping applications, moderate refinement in time and space is sufficient, and that the k-omega SST turbulence model best matches the CL and CD curves found in the literature. The increased knowledge of stabiliser fins dynamics will be used to improve time-domain seakeeping codes and possible also the control laws for active stabilizer fins},
keywords = {Active stabiliser fins, Computational fluid dynamics, Dynamic stall, RANS turbulence models, Roll damping},
pubstate = {published},
tppubtype = {conference}
}
Steps towards accurate and efficient characterisation of the hydrodynamic behaviour of active stabiliser fins have been conducted using computational fluid dynamics. Conditions seen at hydrodynamic testing facilities (Reynolds number = 135,000), with an angle of attack variation described as alpha(t) = 10 deg + 15 deg * sin(omega*t) have been modelled in two dimensions with various RANS turbulence models (k-omega SST, kskl, Spalart-Allmaras & LCTM) for reduced frequencies k=0.1 & 0.05. Solutions were compared to experimental results and results from other calculation methods (LES) and to results from a typical sea keeping code. The results showing the hysteresis loop for CL and CD show that a good agreement was seen to the literature. For seakeeping applications, moderate refinement in time and space is sufficient, and that the k-omega SST turbulence model best matches the CL and CD curves found in the literature. The increased knowledge of stabiliser fins dynamics will be used to improve time-domain seakeeping codes and possible also the control laws for active stabilizer fins