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FLOWTECH International AB Company  |  Products  |  News  |  Contact Us SHIPFLOW Design Potential flow, thin boundary layer and RANS solvers with the SHIPFLOW Design pre and post processor. Modules SHIPFLOW DESIGN integrated pre and post processor. - subset of Friendship Framework. Computer aided design (CAD) kernel Built in optimisation methods (Lackeby shift, Ensemble Investigation, NelderMeadSimplex) REPORTING Automatically generated report on html format created after each SHIPFLOW run. Report contains customizable standard images and tables. Format similar to and easily comparable to tank test report. XPAN World's most powerful free surface potential flow panel method. Linear or non-linear free surface boundary conditions First or higher order panels and singularity distributions. Non-lifting or lifting flows Computes waves, wave resistance, lift, induced resistance, sinkage & trim and pressure distribution Threaded to speed up computations on multi core machines XBOUND Computes the thin boundary layer on the hull. Momentum integral equations Small cross-flow approximation Laminar and turbulent Transition computed or fixed Computes the thin boundary layer XMESH Creates the mesh used in XPAN and XBOUND. Uses offsets as input Automatic offset generation from STL or IGES format. Various hull configuration types: monohull, catamaran, trimaran, twinskeg... XCHAP RANS method Fully coupled k-w SST and explicit algebraic stress model (EASM) Multi-block overlapping grids. Finite volume formulation Propeller by internal lifting line or interface to external propeller programme •• iteratively linked. Computes viscous resistance, wake flow, propeller/hull interaction. • Double Model or Volume of Fluid RANS method for simulation of Viscous Free Surface. Threads and MPI are implemented to speed up computations on multi core machines and clusters of machines. XGRID Creates the grid used in XCHAP and XVOF Uses offsets as input Automatic offset generation from STL or IGES format. Various hull configuration types: monohull, catamaran, trimaran, twinskeg... POTENTIAL FLOW AND THIN BOUNDARY LAYER METHOD Potential flow methods are a very powerful tool for optimising, for example forebodys of ships. The power lies in the accuracy in ranking design modifications in combination with the short computation time. The short computation time makes it possible to try many different variants or to set up a parametric optimisation that will finish within reasonable time. Combining the potential flow method in XPAN with frictional resistance from the thin boundary layer method in XBOUND will include the viscous effects. CHAPMAN- ADVANCED VISCOUS FLOW SOLUTION Detailed predictions of the wake are required for design of propellers and for looking at the interaction with appendages. This calls for an advanced viscous flow method. SHIPFLOW uses an unconventional technique, which combines a very stable numerical scheme with other advanced features, such as a turbulence model especially developed for ship stern flow and a novel gridding technique. The viscous flow RANS solver, XCHAP can be run either as a double model solution or with a prescribes free surface from XPAN. The Volume of Fluid RANS solver, XVOF, is used where there are viscous effects on the free surface. Depending on the type of ship, speed and what effects are studied the user can choose which modules to use. To enhance the stability of the solution the differential equations are discretized considering the magnitude and direction of the flow of information and non-physical fluctuations in the solution are suppressed. Full scale computations using this technique can be made without problems. The default turbulence model is of the algebraic stress type (EASM), and has proven to be especially accurate for stern flow predictions. THREADING SHIPFLOWs XCHAP module is prepared for use on multi-core machines and clusters by using both threading and MPI. Using MPI on a cluster of machines will greatly speed up computations and is especially useful for large cases like, for example, self propulsion, VOF etc. SHIPFLOWS XPAN module is prepared for use on multi-core machines by using threading. Related Products YWC 0.5 oil water separator China Century Marine Equipment Co., Ltd YWC Series 15ppm Bilge Separator (15ppm Bilge Separator) is a kind of environmental protection product designed based on International Maritime Organization ... RSCY-A4 life jacket China Century Marine Equipment Co., Ltd SOLAS Life Jacket Used for international & inland sea-going ships & offshore installation. 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