渔政船的兴波阻力数值计算与预报

Numerical Calculation and Prediction of Wave Resistance on Fishery Administration Ship

渔政船是进行海上渔政监管与执法的专业船只,快速性是保证其顺利完成任务的关键因素。为了快速、准确地预报渔政船的兴波阻力,以Rankine源法和Michell积分法为基础,编制相应的数值计算程序,计算了某渔政船的兴波阻力,并将其计算结果与阻力试验值相比较,结果表明Rankine源法和试验值较为接近;再将Rankine源法与Holtrop法、Slender-body理论进一步地分析比较,发现对于高速渔政船来说,只要船体网格和自由面网格划分合理,Rankine源法在预报阻力方面优势更加突出。

Fishery administration ship is the professional vessel that carries out fishery supervision and law enforcement at sea. Ship resistance and performance is the key to ensure the successful completion of its mission. To predict wave resistance of fishery administration ship rapidly and accurately, Rankine resource method and the Michell integral method are adopted respectively to compile corresponding programs, to calculate the wave resistance of some fishery administration ship, and compared this theoretical result with the resistance test result of ship model. It turned out that the result with Rankine resource method was much closer than the test result. Furthermore, Rankine-based result is also compared with the result with Holtrop and Slender-body method it is found that as long as the hull and the free surface was meshed properly, predicting the wave resistance of this high-speed fishery administration ship couM make full use of Rankine resource method.