Numerical Visualization of Rudder Inflow as Effect of Increasing Angle of Attack

Najmi. S.M Najmi. S.M, Priyanto. A. Priyanto. A., Yasser. M. Yasser. M., Maimun. A Maimun. A

Abstract


Thispaper presents a study to examine the characteristics of the
rudder inflow (propeller slipstream) using FLUENT v.6
visualization technique. The rotating propeller of 5 blades and
semi-spade rudder were set in a uniform flow condition. The
rudder distorts the angle-of-attack (AoA) or incident angle to the
leading edge of the rudder blade. Time-averaged pressure and
velocity field are proposed to analyze the AoA and show similar
AoA values of 0°–7° at the region on rudder. However, it
increases to 20° by those effects as the inflow comes to the
rudder. From the AoA analysis the similar flow pattern is found
to be about 7° in terms of the rudder angle. Cautious access is
additionally necessary to introduce a reasonable safety against
those inflow phenomena that would significantly influence the
durability of the rudder.


Keywords


Rudder Inflow; Angle of Attack; Propeller Slipstream; FLUENT; Velocity Field

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