Effect of Increasing Rudder Deflection on Rudder Inflow for LNG Vessel in Shallow Water

Abstract:

This paper presents the rudder inflow including fully non-uniform wake on a deep drafted LNG vessel in shallow water. The Ansys Fluent v.6.2 software was used to solve Reynold Average Navier-Stokes (RANS) equations, and Icem CFD as a mesh generator. The modeling was conducted based on the B 5-88 type propeller, with a diameter (D) of 7.7 meters. The propeller was meshed using tetra unstructured mesh in a flow field based on 3-Dimension incompressible Navier-stokes solver. It was found in the propeller-to-rudder interaction that there was a slight drop of pressure at rudder leading edge of 0⁰ rudder angle of attack (AoA). However, the dropped pressure was observed on its leading edge as the rudder angle of attack was increased to-7⁰. The effect of increasing rudder deflection was generated by the flow around it and inflows moved over the rudder. This deflection effect continued to X/D=0.4; afterwards, a zero velocity appeared because of the flow encountered by the stagnation region.

• Periodical: Advanced Materials Research (Volume 787)
• Pages: 495-500
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.787.495
• Online since: September 2013
• Authors: Agoes Priyanto, Adi Maimun, Y.M. Ahmed, Y. Mohamed
• Keywords: B 5-88 Type Propeller, Flow Field, RANS Equations, Rudder Inflow, Turbulence Model

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