A numerical and experimental study on roll damping of hulls

Kemeng Xi

doi:10.26182/kc6s-1830

A numerical and experimental study on roll damping of hulls

Kemeng Xi

UWA Oceans Institute

Research output: Thesis › Doctoral Thesis

29 Downloads (Pure)

Abstract

This thesis investigates the roll damping of hulls in both isolated and side-by-side (SBS) configurations, focusing on the nonlinear effects of vortex shedding and flow separation. Novel experiments enabled low-cost, high-fidelity measurements of roll-damping. Complementary numerical simulations using Open FOAM, incorporating overset meshing, were validated and employed to study the mechanics associated with flow separation and hull interaction. Key contributions include a modified semi-empirical method based on isolated edge theory, improving upon conventional approaches and frameworks to account for gap resonance. The findings offer new insights into roll physics and practical tools for safer, more accurate design in offshore operations.

Original language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Supervisors/Advisors	Milne, Ian, Supervisor Draper, Scott, Supervisor Chen, Lifen, Supervisor Cheng, Liang, Supervisor
Award date	25 Jul 2025
DOIs	https://doi.org/10.26182/kc6s-1830
Publication status	Unpublished - 2025

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10.26182/kc6s-1830

THESIS - DOCTOR OF PHILOSOPHY - XI Kemeng - 2025
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1 Conference paper
1 Article

AN EXPERIMENTAL STUDY OF ROLL DAMPING USING A PENDULUM-BASED SYSTEM
Xi, K., Milne, I., Draper, S. & Chen, L., 2024, Ocean Engineering. USA: ASME International, p. 1-9 V05BT06A026. (Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE; vol. 5B-2024).
Research output: Chapter in Book/Conference paper › Conference paper › peer-review
On the application of overset meshing to numerical studies of roll damping of hulls in complex scenarios
Xi, K., Milne, I. A., Draper, S. & Chen, L., 15 Dec 2023, In: Ocean Engineering. 290, 15 p., 116173.
Research output: Contribution to journal › Article › peer-review

Open Access
11 Citations (Scopus)

Cite this

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title = "A numerical and experimental study on roll damping of hulls",

abstract = "This thesis investigates the roll damping of hulls in both isolated and side-by-side (SBS) configurations, focusing on the nonlinear effects of vortex shedding and flow separation. Novel experiments enabled low-cost, high-fidelity measurements of roll-damping. Complementary numerical simulations using Open FOAM, incorporating overset meshing, were validated and employed to study the mechanics associated with flow separation and hull interaction. Key contributions include a modified semi-empirical method based on isolated edge theory, improving upon conventional approaches and frameworks to account for gap resonance. The findings offer new insights into roll physics and practical tools for safer, more accurate design in offshore operations.",

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AB - This thesis investigates the roll damping of hulls in both isolated and side-by-side (SBS) configurations, focusing on the nonlinear effects of vortex shedding and flow separation. Novel experiments enabled low-cost, high-fidelity measurements of roll-damping. Complementary numerical simulations using Open FOAM, incorporating overset meshing, were validated and employed to study the mechanics associated with flow separation and hull interaction. Key contributions include a modified semi-empirical method based on isolated edge theory, improving upon conventional approaches and frameworks to account for gap resonance. The findings offer new insights into roll physics and practical tools for safer, more accurate design in offshore operations.

KW - Roll damping

KW - Vortex shedding

KW - Physical experiment

KW - Overset mesh

U2 - 10.26182/kc6s-1830

DO - 10.26182/kc6s-1830

M3 - Doctoral Thesis

ER -

A numerical and experimental study on roll damping of hulls

Abstract

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Research output

AN EXPERIMENTAL STUDY OF ROLL DAMPING USING A PENDULUM-BASED SYSTEM

On the application of overset meshing to numerical studies of roll damping of hulls in complex scenarios

Cite this