Also in Fig.9 and Fig.10, experimental results with a grid still show the same tendency. Since total pressure distributions at the inlet of intake duct have a strong influence on the pressure loss, the boundary layer profile along the actual ship bottom is to be needed. The effect of operation, on the other hand, is consistent and at the single-intake operation shows lower pressure losses based on both experimental and computational results.

　

Fig.6 Comparison of Pressure Loss Coefficient with and without Grid, Flat and Tapered Combination at Two-Intake Operation

　

Fig.7 Comparison of Pressure Loss Coefficient for Different Duct Shape without Grid at Two-Intake Operation

　

Fig.8 Comparison of Pressure Loss Coefficient for Different Duct Shape without Grid at Single-Intake Operation

　

Fig.9 Comparison of Pressure Loss Coefficient for Different Duct Shape with Grid at Two-Intake Operation

　

Fig.10 Comparison of Pressure Loss Coefficient for Different Duct Shape with Grid at Single-Intake Operation

　

Fig.11 Measured Velocity Vectors at Two-Intake Operation

BACK　　　CONTENTS　　　NEXT