A HYBRID PREDICTION METHOD FOR SHIP ROLL DAMPING USING CFD AND GREY-BOX MODELING
No. 10 (2021), SECTION 02: MECHANICAL - MECHANICAL ELECTRONICS - MATERIALS
No. 10 (2021)

A HYBRID PREDICTION METHOD FOR SHIP ROLL DAMPING USING CFD AND GREY-BOX MODELING

SECTION 02: MECHANICAL - MECHANICAL ELECTRONICS - MATERIALS
Published 2022-06-07
BINH LE THANH
Faculty of Shipbuilding Technology, Vietnam Maritime University
PHUONG NGUYEN THI HA
Faculty of Shipbuilding Technology, Vietnam Maritime University
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Keywords

CFD simulation, overset mesh, roll motion, roll damping coefficient, grey-box modeling, Froude energy method Mô phỏng số CFD, lưới chồng, chuyển động lắc ngang, hệ số cản lắc ngang, mô hình hộp xám, phương pháp năng lượng Froude

How to Cite

LÊ THANH, B., & NGUYỄN THỊ HÀ, P. (2022). A HYBRID PREDICTION METHOD FOR SHIP ROLL DAMPING USING CFD AND GREY-BOX MODELING. Journal of Marine Science and Technology, 10(10), 73–80. Retrieved from https://jmst.vimaru.edu.vn/index.php/tckhcnhh/article/view/163
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Abstract

Ship roll motion prediction plays an important role in ensuring the safety, anti-capsize of the ship in operation and needs special attention during the design phase. The potential theory, which is widely applied in determining the roll damping coefficient, has low accuracy and needs to be determined by model test. In this paper, free-roll motion in calm water is simulated numerically using commercial software Star-CCM+ together with the application of the grey-box modeling method for the direct calculation of roll damping coefficient. The effect of mesh size, initial roll angle, forward speed, and bilge keels are studied and analyzed; roll damping coefficient are compared with Froude energy,… The obtained results indicate that the proposed hybrid method is a good solution, cost and time saving with a high level of accuracy.

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