FLOW SIMULATION BOAT SWLT

Based on the presented simulation model, the boat is placed in the computational domain to analyze the interaction between water and air flows around the hull. The tapered shape of the bow allows fluid to divide better so that water and air flow can follow the contour of the boat more smoothly. At the front of the boat, it is estimated that there will be an increase in pressure due to the impact of the flow (stagnation area), while along the side of the hull the flow will experience acceleration which helps reduce resistance. At the stern, the flow tends to separate from the surface and forms a wake area characterized by turbulence and a decrease in fluid velocity. In water media, this phenomenon is the main source of hydrodynamic resistance, while in air media aerodynamic resistance is relatively smaller because the upper cross-sectional area of ​​the boat is not too large. Overall, the hull design shows quite streamlined characteristics so that it is able to direct the flow well, but optimization at the stern can still be done to reduce turbulence, reduce wake and increase the efficiency of the boat's movement in the water.