Grasshopper

algorithmic modeling for Rhino

Controling curves using table data from external file for X, Y and Z delta deformation

Hello all..

Now I am trying to investigate how to coop Rhino parametric Hull script from Holland:http://rhinocentre.blogspot.com/2009/12/grasshopper-parametric-ship... with Open Foam, and will try to optimise the form maybe will use Rhino Phyton...

I will try to continue this script to pass trough potential method, which will modify the hull shape, and get the optimum shape.

For now there is a problem with that Open Foam works only on linux and I am looking for other free alternative for CFD.. Just to investigate the resistance fast, so to deform and modify the shape... Later with the deformed shape will do 3 passes with deform, compare, deform with fast potential solver. And the last two shapes which I liked could pass trough viscous solver so I can compare the difference, cost, performance, production.

Does somebody know such free potential code for windows I could try?
After getting free CFD code. 

IDEA: 

The question will be how to connect them (the outputs of CFD with deformations in Rhino) so taking PressureXYZ vector fields from CFD, in table with coordinates for each point and amount of deformation in each direction putting them in Rhino (in scalar form in table with position of the control point amount of deformation and direction. So using Rhino nudge comands to deform the body. Deforming the hull using the control points, or control curves with soft body deformation. Maybe there will be a high dense cage where is the higesht point in the table and soft deforming proportionally the rest points. There sould be two limiting lines (which user will specify in top view) up to where the deformation can be done, for the cylindrical part. So the curvature should smooth with g2-g3 curvature up to this meeting points of optimised stern, bow with the cylindrical left alone part. At the end there will be optimised hull form for lowest Pressure = Resistance in some constrains (limiting lines for the untouched cylindrical part for example) for current LBD and displacement. With possibility to get linesplan..

Later time begining shape can be connected with Tables with emperical or statistical formulas from the rules for specific ship.

If somebody wants to join this quest is more than welcome

Here is an example picutre which will show me where do dig, and where to put material for the deformation of the body:  

Views: 378

About

Translate

Search

Photos

  • Add Photos
  • View All

© 2024   Created by Scott Davidson.   Powered by

Badges  |  Report an Issue  |  Terms of Service