CFD analysis of the effect of heterogeneous hull roughness on ship resistance

Roberto Ravenna; Soonseok Song; Weichao Shi; Tonio Sant; Claire De Marco Muscat-Fenech; Yigit Kemal Demirel

CFD analysis of the effect of heterogeneous hull roughness on ship resistance

Roberto Ravenna, Soonseok Song, Weichao Shi, Tonio Sant, Claire De Marco Muscat-Fenech, Yigit Kemal Demirel

Naval Architecture, Ocean And Marine Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

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Abstract

Hull roughness increases ship resistance, power, and fuel consumption significantly. Recent studies have demonstrated that Computational Fluid Dynamics (CFD) can accurately predict the effect of roughness on ship resistance by using a modified wall-function approach. Although hull roughness is often spatially heterogeneous, little research has been carried out on the heterogeneous roughness effect on ship resistance.

Therefore, this study aims to investigate the heterogeneous roughness effect on ship resistance using CFD. A series of CFD simulations were conducted on a scaled model of the KRISO Container Ship (KSC) hull. Various surface coverage conditions were considered, including homogeneous (i.e., smooth, and full-rough conditions) and heterogeneous conditions (i.e., different smooth/rough wetted surface ratios).

The present findings showed that increased roughness on the fore hull regions has a greater impact on ship resistance than the rough aft-hull regions. The introduction of a so-called roughness impact factor correlated the added resistance of the heterogeneous roughness scenarios to the corresponding rough wetted surface area. Accordingly, the rough fore-hull scenarios presented higher roughness impact factors than the rough aft-hull cases.

Original language	English
Title of host publication	Proceedings of the 2nd International Congress on Ship and Marine Technology (GMO-SHIPMAR-2021)
Editors	Ahmet Dursun, Hasan Ӧlmez, Yiğit Kemal Demirel
Place of Publication	Istanbul
Pages	509-522
Number of pages	14
ISBN (Electronic)	9786050107135
Publication status	Published - 16 Sept 2021
Event	2nd International Conference on Ship and Marine Technology - Istanbul, Turkey Duration: 16 Sept 2021 → 17 Sept 2021 https://www.gmoshipmar.org/GMOSHIPMAR2021/

Conference

Conference	2nd International Conference on Ship and Marine Technology
Abbreviated title	GMO-SHIPMAR 2021
Country/Territory	Turkey
City	Istanbul
Period	16/09/21 → 17/09/21
Internet address	https://www.gmoshipmar.org/GMOSHIPMAR2021/

Keywords

roughness effect
heterogeneous roughness
ship resistance
computational fluid dynamics (CFD)
KRISO container ship (KCS)

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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Ravenna-etal-GMO-SHIPMAR-2021-CFD-analysis-of-the-effect-of-heterogeneous-hull-roughnessFinal published version, 2.81 MBLicence: Strath_1

Cite this

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title = "CFD analysis of the effect of heterogeneous hull roughness on ship resistance",

abstract = "Hull roughness increases ship resistance, power, and fuel consumption significantly. Recent studies have demonstrated that Computational Fluid Dynamics (CFD) can accurately predict the effect of roughness on ship resistance by using a modified wall-function approach. Although hull roughness is often spatially heterogeneous, little research has been carried out on the heterogeneous roughness effect on ship resistance. Therefore, this study aims to investigate the heterogeneous roughness effect on ship resistance using CFD. A series of CFD simulations were conducted on a scaled model of the KRISO Container Ship (KSC) hull. Various surface coverage conditions were considered, including homogeneous (i.e., smooth, and full-rough conditions) and heterogeneous conditions (i.e., different smooth/rough wetted surface ratios). The present findings showed that increased roughness on the fore hull regions has a greater impact on ship resistance than the rough aft-hull regions. The introduction of a so-called roughness impact factor correlated the added resistance of the heterogeneous roughness scenarios to the corresponding rough wetted surface area. Accordingly, the rough fore-hull scenarios presented higher roughness impact factors than the rough aft-hull cases. ",

keywords = "roughness effect, heterogeneous roughness, ship resistance, computational fluid dynamics (CFD), KRISO container ship (KCS)",

author = "Roberto Ravenna and Soonseok Song and Weichao Shi and Tonio Sant and {De Marco Muscat-Fenech}, Claire and Demirel, {Yigit Kemal}",

year = "2021",

month = sep,

day = "16",

language = "English",

pages = "509--522",

editor = "Ahmet Dursun and Hasan Ӧlmez and {Kemal Demirel}, Yiğit",

booktitle = "Proceedings of the 2nd International Congress on Ship and Marine Technology (GMO-SHIPMAR-2021)",

note = "2nd International Conference on Ship and Marine Technology, GMO-SHIPMAR 2021 ; Conference date: 16-09-2021 Through 17-09-2021",

url = "https://www.gmoshipmar.org/GMOSHIPMAR2021/",

}

Ravenna, R, Song, S, Shi, W, Sant, T, De Marco Muscat-Fenech, C & Demirel, YK 2021, CFD analysis of the effect of heterogeneous hull roughness on ship resistance. in A Dursun, H Ӧlmez & Y Kemal Demirel (eds), Proceedings of the 2nd International Congress on Ship and Marine Technology (GMO-SHIPMAR-2021). Istanbul, pp. 509-522, 2nd International Conference on Ship and Marine Technology, Istanbul, Turkey, 16/09/21.

CFD analysis of the effect of heterogeneous hull roughness on ship resistance. / Ravenna, Roberto; Song, Soonseok; Shi, Weichao et al.
Proceedings of the 2nd International Congress on Ship and Marine Technology (GMO-SHIPMAR-2021). ed. / Ahmet Dursun; Hasan Ӧlmez; Yiğit Kemal Demirel. Istanbul, 2021. p. 509-522.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

TY - GEN

T1 - CFD analysis of the effect of heterogeneous hull roughness on ship resistance

AU - Ravenna, Roberto

AU - Song, Soonseok

AU - Shi, Weichao

AU - Sant, Tonio

AU - De Marco Muscat-Fenech, Claire

AU - Demirel, Yigit Kemal

PY - 2021/9/16

Y1 - 2021/9/16

N2 - Hull roughness increases ship resistance, power, and fuel consumption significantly. Recent studies have demonstrated that Computational Fluid Dynamics (CFD) can accurately predict the effect of roughness on ship resistance by using a modified wall-function approach. Although hull roughness is often spatially heterogeneous, little research has been carried out on the heterogeneous roughness effect on ship resistance. Therefore, this study aims to investigate the heterogeneous roughness effect on ship resistance using CFD. A series of CFD simulations were conducted on a scaled model of the KRISO Container Ship (KSC) hull. Various surface coverage conditions were considered, including homogeneous (i.e., smooth, and full-rough conditions) and heterogeneous conditions (i.e., different smooth/rough wetted surface ratios). The present findings showed that increased roughness on the fore hull regions has a greater impact on ship resistance than the rough aft-hull regions. The introduction of a so-called roughness impact factor correlated the added resistance of the heterogeneous roughness scenarios to the corresponding rough wetted surface area. Accordingly, the rough fore-hull scenarios presented higher roughness impact factors than the rough aft-hull cases.

AB - Hull roughness increases ship resistance, power, and fuel consumption significantly. Recent studies have demonstrated that Computational Fluid Dynamics (CFD) can accurately predict the effect of roughness on ship resistance by using a modified wall-function approach. Although hull roughness is often spatially heterogeneous, little research has been carried out on the heterogeneous roughness effect on ship resistance. Therefore, this study aims to investigate the heterogeneous roughness effect on ship resistance using CFD. A series of CFD simulations were conducted on a scaled model of the KRISO Container Ship (KSC) hull. Various surface coverage conditions were considered, including homogeneous (i.e., smooth, and full-rough conditions) and heterogeneous conditions (i.e., different smooth/rough wetted surface ratios). The present findings showed that increased roughness on the fore hull regions has a greater impact on ship resistance than the rough aft-hull regions. The introduction of a so-called roughness impact factor correlated the added resistance of the heterogeneous roughness scenarios to the corresponding rough wetted surface area. Accordingly, the rough fore-hull scenarios presented higher roughness impact factors than the rough aft-hull cases.

KW - roughness effect

KW - heterogeneous roughness

KW - ship resistance

KW - computational fluid dynamics (CFD)

KW - KRISO container ship (KCS)

UR - https://www.gmoshipmar.org/

M3 - Conference contribution book

SP - 509

EP - 522

BT - Proceedings of the 2nd International Congress on Ship and Marine Technology (GMO-SHIPMAR-2021)

A2 - Dursun, Ahmet

A2 - Ӧlmez, Hasan

A2 - Kemal Demirel, Yiğit

CY - Istanbul

T2 - 2nd International Conference on Ship and Marine Technology

Y2 - 16 September 2021 through 17 September 2021

ER -

CFD analysis of the effect of heterogeneous hull roughness on ship resistance

Abstract

Conference

Keywords

UN SDGs

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