The numerical study of hydrodynamic coefficients by RANS

Qiuxin Gao, Dracos Vassalos

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

In the paper, a CFD solver is applied to study the roll coefficients of a appended ship model with forward speed. Two approaches based on RANS and VOF modelling are adopted, namely, roll decay and forced roll motion. The results of roll coefficients from two approaches are compared and validated against model test data. The effects of viscosity on the hydrodynamic coefficients are studied by solving Euler equation. Additionally, the numerical simulation of forced roll motion at full scale is performed. The present results show that the influences of viscosity and scale on hydrodynamic coefficients except ship resistance are not large.
LanguageEnglish
Title of host publicationProceedings of the 11th International Conference on the Stability of Ships and Ocean Vehicles
EditorsK.J. Spyrou, N. Themelis, A.D. Papanikolaou
Place of PublicationAthens
Pages471-476
Number of pages6
Publication statusPublished - 23 Sep 2012
Event International Conference on the Stability of Ships and Ocean Vehicles (STAB 2012) - Athens, Greece
Duration: 23 Sep 201228 Sep 2012

Conference

Conference International Conference on the Stability of Ships and Ocean Vehicles (STAB 2012)
CountryGreece
CityAthens
Period23/09/1228/09/12

Fingerprint

Hydrodynamics
Viscosity
Ship models
Euler equations
Drag
Computational fluid dynamics
Computer simulation

Keywords

  • RANS
  • hydrodynamic coefficients
  • roll decay
  • forced roll motion

Cite this

Gao, Q., & Vassalos, D. (2012). The numerical study of hydrodynamic coefficients by RANS. In K. J. Spyrou, N. Themelis, & A. D. Papanikolaou (Eds.), Proceedings of the 11th International Conference on the Stability of Ships and Ocean Vehicles (pp. 471-476). Athens.
Gao, Qiuxin ; Vassalos, Dracos. / The numerical study of hydrodynamic coefficients by RANS. Proceedings of the 11th International Conference on the Stability of Ships and Ocean Vehicles. editor / K.J. Spyrou ; N. Themelis ; A.D. Papanikolaou. Athens, 2012. pp. 471-476
@inproceedings{0f3b23220e2f49d0a4ffa4fc567653e9,
title = "The numerical study of hydrodynamic coefficients by RANS",
abstract = "In the paper, a CFD solver is applied to study the roll coefficients of a appended ship model with forward speed. Two approaches based on RANS and VOF modelling are adopted, namely, roll decay and forced roll motion. The results of roll coefficients from two approaches are compared and validated against model test data. The effects of viscosity on the hydrodynamic coefficients are studied by solving Euler equation. Additionally, the numerical simulation of forced roll motion at full scale is performed. The present results show that the influences of viscosity and scale on hydrodynamic coefficients except ship resistance are not large.",
keywords = "RANS, hydrodynamic coefficients, roll decay, forced roll motion",
author = "Qiuxin Gao and Dracos Vassalos",
year = "2012",
month = "9",
day = "23",
language = "English",
isbn = "9786188016309",
pages = "471--476",
editor = "K.J. Spyrou and N. Themelis and A.D. Papanikolaou",
booktitle = "Proceedings of the 11th International Conference on the Stability of Ships and Ocean Vehicles",

}

Gao, Q & Vassalos, D 2012, The numerical study of hydrodynamic coefficients by RANS. in KJ Spyrou, N Themelis & AD Papanikolaou (eds), Proceedings of the 11th International Conference on the Stability of Ships and Ocean Vehicles. Athens, pp. 471-476, International Conference on the Stability of Ships and Ocean Vehicles (STAB 2012), Athens, Greece, 23/09/12.

The numerical study of hydrodynamic coefficients by RANS. / Gao, Qiuxin; Vassalos, Dracos.

Proceedings of the 11th International Conference on the Stability of Ships and Ocean Vehicles. ed. / K.J. Spyrou; N. Themelis; A.D. Papanikolaou. Athens, 2012. p. 471-476.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

TY - GEN

T1 - The numerical study of hydrodynamic coefficients by RANS

AU - Gao, Qiuxin

AU - Vassalos, Dracos

PY - 2012/9/23

Y1 - 2012/9/23

N2 - In the paper, a CFD solver is applied to study the roll coefficients of a appended ship model with forward speed. Two approaches based on RANS and VOF modelling are adopted, namely, roll decay and forced roll motion. The results of roll coefficients from two approaches are compared and validated against model test data. The effects of viscosity on the hydrodynamic coefficients are studied by solving Euler equation. Additionally, the numerical simulation of forced roll motion at full scale is performed. The present results show that the influences of viscosity and scale on hydrodynamic coefficients except ship resistance are not large.

AB - In the paper, a CFD solver is applied to study the roll coefficients of a appended ship model with forward speed. Two approaches based on RANS and VOF modelling are adopted, namely, roll decay and forced roll motion. The results of roll coefficients from two approaches are compared and validated against model test data. The effects of viscosity on the hydrodynamic coefficients are studied by solving Euler equation. Additionally, the numerical simulation of forced roll motion at full scale is performed. The present results show that the influences of viscosity and scale on hydrodynamic coefficients except ship resistance are not large.

KW - RANS

KW - hydrodynamic coefficients

KW - roll decay

KW - forced roll motion

UR - http://stab2012.ntua.gr/

UR - http://www.shipstab.org/index.php/conference-workshop-proceedings

M3 - Conference contribution book

SN - 9786188016309

SP - 471

EP - 476

BT - Proceedings of the 11th International Conference on the Stability of Ships and Ocean Vehicles

A2 - Spyrou, K.J.

A2 - Themelis, N.

A2 - Papanikolaou, A.D.

CY - Athens

ER -

Gao Q, Vassalos D. The numerical study of hydrodynamic coefficients by RANS. In Spyrou KJ, Themelis N, Papanikolaou AD, editors, Proceedings of the 11th International Conference on the Stability of Ships and Ocean Vehicles. Athens. 2012. p. 471-476