PHÂN TÍCH TÍNH BẤT ĐỊNH TRONG DỰ ĐOÁN LẮC NGANG  CỦA TÀU DTMB BẰNG PHƯƠNG PHÁP SỐ

PHUONG NGUYEN THI HA; DANH BUI THANH

Vol. 71 (2022), Science - Technology

Vol. 71 (2022)

UNCERTAINTY ANALYSIS OF DTMB SHIP ROLL DAMPING NUMERICAL PREDICTION

Science - Technology

Published 2022-09-13

PHUONG NGUYEN THI HA ⁺⁻
DANH BUI THANH⁺⁻

PHUONG NGUYEN THI HA

Faculty of Shipbuilding Technology, Vietnam Maritime University

DANH BUI THANH

Faculty of Shipbuilding Technology, Vietnam Maritime University

PDF (Tiếng Việt)

Keywords

Uncertainty, CFD, numerical simulation, roll damping, damping coefficient. Tính bất định, CFD, mô phỏng số, cản lắc ngang, hệ số cản lắc ngang.

How to Cite

NGUYỄN THỊ HÀ, P., & BÙI THANH , D. (2022). UNCERTAINTY ANALYSIS OF DTMB SHIP ROLL DAMPING NUMERICAL PREDICTION. Journal of Marine Science and Technology, 71(71), 05–10. Retrieved from https://jmst.vimaru.edu.vn/index.php/tckhcnhh/article/view/323

Abstract

Uncertainty analysis of numerical simulation results is necessary in ship hydrodynamics as well as in ship roll damping prediction. In this study, roll motion of ship DTMB 5512 is simulated by numerical method with initial roll angle 10⁰ at speed Fn = 0.28 and extinction coefficients are calculated for different cases when base size and time step are changed. Reliability of the results are verified by verification and validation procedure with two input parameters, which are grid size and time step. An improvement in meshing and an remarkable simulating case with high accuracy show the importance of uncertainty analysis in predicting ship roll motion.