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Found 6 results

  1. The following example consist of a single meta surface that is used to define the bow of a large varieties of ship kinds. The model permit large variations of the shape from a typical bulbous bow of large vessels to vertical bows as seen in sailing boats, for instance. First a station is defined by points as the keel, bilge, waterline and deck, plus some auxiliary points used to control the tangent of each curve, as to say to guarantee a smooth transaction between each section of the station. Then those points "runs" along the X-axis varying the coordinates, defining the station at each "X" position of the station. The points and curves of each station are the same, however transformed as defined by some "curve functions", in function of X-position. Thus, the same curve I used to define the bilge at the aft zone I also use to define the bulb at the fore end of the bow. This simple model shows the geniality, by simplicity, of a parametric model defined via meta surfaces. In this model the variables are: -Beam -Length -Depth -Draft -Entrance Angle -Stem Angle -Bilge Radius -Bulb Beam -Bulb Height Finally, TPOs is used to see the station variation along the X-axis. Regards, HB. Meta_Bow_4Forum.fdb
  2. Hi, This is an example of integration with Pointwise and CAESES. First of all create a Glyph file by using Pointwise function "Script -> Begin to Journaling". Use your your Glyph file (e.g. roPaxLowerBulbScript.glf) as argument for the computation. The leading -b starts Pointwise in batch mode. Best regards, Takamichi Hiroi roPaxLowerBulb.fdb
  3. Hi together, Note that CAESES is a ship hull design software, in particular, in the context of hull form optimization with CFD (computational fluid dynamics). It mainly focuses on the underwater part. The software provides comprehensive CAD functionality for generating smooth and variable hull surfaces , a complete variant management, 2D section visualization, hydrostatic calculation, 2D drawing, Lackenby transformation, STL and CAD tools for creation of flow domains, plus integration mechanisms to plug-in simulation and other preliminary tools. Energy-saving devices and propellers can be modeled, too. Furthermore, sea-keeping tools (basically, any other external software) can also be added to the design process. Please find below more screenshots that are taken from CAESES. Cheers Joerg LAST UPDATE NOV 2018: Note that there are FREE pro editions for students and PhD students, plus special packages for start-ups, small companies and freelancers. nurbs_direct_modification.mp4
  4. Hi, One of the famous hull forms found in literature is the so-called Wigley hull. It is mathematically defined, see attached formula, and used regularly for tests and validation work. By definition the Wigley hull is a (simple) fully parametric model with beam, draft and height as parameters to control the shape (often normalized by length). A realization of the Wigley hull via a MetaSurface that captures the mathematical formula is given in the attached CAESES project. In addition, some partially parametric modifications are shown, namely, Lackenby type swinging of sections that is realized via a DeltaShift. (Please note that a Generalized Lackenby variation would also be available but was not used here in order to keep the project light.) If you need the hull for your CFD validation work you can use the various exports for panels, offsets, STL, iges etc. More information about ship hull design can be found in the marine section of the CAESES website. Kind regards, Stefan standardWigley.fdb
  5. In simulation of shiphull using caeses and ansys ,how can the inlet and outlet (flow domain) be made? Can it be made with caeses (for external flow) Thanks Ogbenna Favour.
  6. Hello everybody, About the hydrostatics calculation: Is there a way to define weights of the ship? I mean the material of the hull, its thickness, the position and weight values of engines, etc... What's the correct way to approach this? Cheers, Xavier
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