A Potential Flow Solver for Nonlinear Free Surface Problems Based on the Finite Volume Method

2006 ◽  
Vol 53 (2) ◽  
pp. 55-62
Author(s):  
Jussi Martio ◽  
Keyword(s):  
Free Surface ◽  
Finite Volume Method ◽  
Finite Volume ◽  
Potential Flow ◽  
Flow Solver ◽  
Volume Method ◽  
Nonlinear Free Surface

Surface Ship Total Resistance Prediction Based on a Nonlinear Free Surface Potential Flow Solver and a Reynolds-Averaged Navier-Stokes Viscous Correction

2007 ◽  
Vol 51 (01) ◽  
pp. 47-64
Author(s):  
James C. Huan ◽  
Thomas T. Huang
Keyword(s):  
Free Surface ◽  
Surface Potential ◽  
Potential Flow ◽  
Free Surface Flow ◽  
Surface Flow ◽  
Navier Stokes ◽  
Total Resistance ◽  
Flow Solver ◽  
Resistance Prediction ◽  
Nonlinear Free Surface

A fast turnaround and an accurate computational fluid dynamics (CFD) approach for ship total resistance prediction is developed. The approach consists of a nonlinear free surface potential flow solver (PShip code) with a wet-or-dry transom stern model, and a Reynolds-averaged Navier-Stokes (RANS) equation solver that solves viscous free surface flow with a prescribed free surface given from the PShip. The prescribed free surface RANS predicts a viscous correction to the pressure resistance (viscous form) and viscous flow field around the hull. The viscous free surface flow solved this way avoids the time-consuming RANS iterations to resolve the free surface profile. The method, however, requires employing a flow characteristic-based nonreflecting boundary condition at the free surface. The approach can predict the components of ship resistance, the associated wave profile around the hull, and the sinkage and trim of the ship. Validation of the approach is presented with Wigley, Series 60 (CB = 0.6), and NSWCCD Model 5415 hulls. An overall accuracy of ±2% for ship total resistance prediction is achieved. The approach is applied to evaluating the effects of a stern flap on a DD 968 model on ship performance. An empirical viscous form resistance formula is also devised for a quick ship total resistance estimate.

A Moving-Grid Finite-Volume Method for Free Surface Flows

2014 ◽  
Vol 2014.27 (0) ◽  
pp. 729-730
Author(s):  
Sadanori Ishihara ◽  
Kenichi Matsuno ◽  
Masashi Yakmakawa
Keyword(s):  
Free Surface ◽  
Finite Volume Method ◽  
Finite Volume ◽  
Free Surface Flows ◽  
Moving Grid ◽  
Surface Flows ◽  
Volume Method

On the Coupling of Incompressible SPH with a Finite Element Potential Flow Solver for Nonlinear Free-Surface Flows

2018 ◽  
Vol 28 (3) ◽  
pp. 248-254 ◽  
Author(s):  
Georgios Fourtakas ◽  
Peter Stansby ◽  
Benedict Rogers ◽  
Steven Lind ◽  
Shiqiang Yan ◽  
...  
Keyword(s):  
Finite Element ◽  
Free Surface ◽  
Potential Flow ◽  
Free Surface Flows ◽  
Surface Flows ◽  
Flow Solver ◽  
Incompressible Sph ◽  
Nonlinear Free Surface
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