ANALISA PENGARUH VARIASI SUDUT CHINE PADA LAMBUNG KAPAL PATROLI DENGAN MENGGUNAKAN METODE CFD

Abstract

Abstract

 Patrol boats play a vital role in maintaining maritime security, enforcing laws, and monitoring national waters. To support these missions, patrol boats require high-speed performance and optimal hydrodynamic efficiency. One method to enhance vessel performance is by modifying the hull form, specifically through the addition of chine variations. This study aims to analyze the effect of chine shape variations on the total resistance of the boat. Five design variations were analyzed: the original design, single chine 10°, double chine 0°, and double chine 10°, each tested at speeds of 2 knots, 10 knots, and 20 knots. The simulation results show that the double chine shape with a 10° angle delivers the best overall performance. At a speed of 10 knots, the double chine 10° variation yielded the lowest total resistance of 4145.86 N and demonstrated good efficiency, even though the wetted surface area (WSA) increased to 15.913162 m². At 2 knots, this variation also showed near-optimal results with a resistance of 1371.34 N. At 20 knots, it exhibited a resistance of 5795.54 N with a WSA of 11.378655 m². These results prove that the combination of the number and angle of the chine has a significant impact on the hydrodynamic performance of patrol boats, and the double chine 10° design is the most efficient choice for reducing resistance without a significant increase in WSA.