풍하중에 의한 바지선의 예인 시 거동특성 변화에 관한 연구
A Study on Towing Characteristics of Barge Considering Wind Force
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초록
This paper presents the results of a numerical study on the towing characteristics of a barge under various wind conditions. First, stability criteria, including the wind force, were derived based on the linear motion equations of a towed vessel. The effect of the wind force on the towing stability was investigated using stability criteria. Next, towing simulations were carried out using a nonlinear time-domain simulation method. In this case, the towline was modeled as a simple spring-damper, and the wind force was computed using the wind coefficient from CFD calculations. Simulations were conducted for a barge under a constant towing speed and constant wind speed conditions. The effect of the wind direction on the slewing motion was also observed. In addition, a series of numerical simulations using variable wind speeds were performed for the present barge with and without a skeg.
Abstract
This paper presents the results of a numerical study on the towing characteristics of a barge under various wind conditions. First, stability criteria, including the wind force, were derived based on the linear motion equations of a towed vessel. The effect of the wind force on the towing stability was investigated using stability criteria. Next, towing simulations were carried out using a nonlinear time-domain simulation method. In this case, the towline was modeled as a simple spring-damper, and the wind force was computed using the wind coefficient from CFD calculations. Simulations were conducted for a barge under a constant towing speed and constant wind speed conditions. The effect of the wind direction on the slewing motion was also observed. In addition, a series of numerical simulations using variable wind speeds were performed for the present barge with and without a skeg.
참고문헌 (8)
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- 남보우, "운송 바지선의 예인안정성에 관한 모형시험 및 수치해석 연구", 한국해양공학회지, 28(2), pp.102~110 (2014), 한국해양공학회
- Park, Y. S., "Viscous Flow Analysis around Semi-Crane and Transport Barge to Evaluate Wind and Current Loads", Proceedings of 2012 Annual Conference of KAOST, pp.1434~1441 (2012)
- Yasukawa, H., "Simulation of Slewing Motion of a Towed Ship", Journal of the Japan Society of Naval Architecs and Ocean Engineers, 4, pp.137~146 (2006)