Abstract No.F180105-057
Author name(s): Hikaru Hasegawa1, Ping-Chen Wu2, Yasuyuki Toda1
Company: 1. Osaka University, Japan; 2. National Cheng Kung University, Taiwan Region, China
To predict propeller performance, the body force model considering blade rotation was developed based on blade element theory and coupled with RANS (Reynolds-averaged Navier¨CStokes) solver CFDSHIP-IOWA V4.5 implicitly and interactively. The model was ran inside flow solver every inner iteration. The grid points inside each 2D blade geometry were identified by a numerical search algorithm. To calculate lift coefficient, the total velocities at 25% off oil chord length were obtained by the inverse distance weighting interpolation from RANS solution. The body forces were distributed linearly for the maximal value at leading edge and zero at trailing edge.
KEY WORDS: CFD; RANS; body force propeller model; open water propeller; behind-hull condition; propeller rotation
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