Rim driven type propeller blade design

[Rim driven type propeller blade design]

HI Shafeeh, Here is a model of a rim drive.

Best Regards

Clausrimdrive.cdb

[how to manipulate a ruled surface?]

Hej Gustaf,

Can you create a ticket in the helpdesk https://helpdesk.caeses.com/ and share your project file, please?

Looks like the parametrization is different to what you would like to achieve. The ruled surface connects the curves at the same parameter values, hence you can manipulate them by changing the parametrization, e.g. unit speed or even custom.

Cheers

Claus

[Blade Analysis for Propellers]

HI Jake, Can you send the propeller file again? I can not find it in  my archives.

[Lackenby Generalized Shifts - Parallel mid body]

Please insert a reasonable knotspacing value in the BRep and datareduction afterthe transformation. The transformation might otherwise rip the geometry apart, since it moves the control points of the vessels representation. In the flat of bottom area there might be only a few and that needs to be refined.

Cheers

Claus

[Brep or Surface trimming issues]

The reference points for the trimming did not hit the Brep. Alos,is there any reason why you took 2000 sections for the bottom surface?

TestSWAN_v2_trimmed.cdbc

[Share topology]

Jake,

Ceyhan is not in the office these days. Will take a little until he responds 😕

Best Regards

Claus

[Blade Analysis for Propellers]

Hi Jake, I received your question, unfortunately I am a bit busy theses days ... I'll come back to you.

[Spray rails parametric modeling on fast monohull design]

Hi George,

I took the liberty to reduce the number of sections for the metaSurface a little to get the performance a little better. Your chosen number might have slowed it down and potential later operations take long and might fail. 

If you select the hull Brep, you will find two sprayrail as operations. If you define a feature that has a Brep as typeProvider, and the first argument is a FBrepBase you can use that as an operation, which will make your project pretty slim.

For the Chine, I also generated a new surface as a RuledSurface from the upper edge of the metaSurface and a trimmed imageCurve of the side Brep.

Cheers

Claus

TestSWAN_v2_SR.cdbc

[Blade Analysis for Propellers]

Thanks, I have responded by email. Did you get it?

Cheers

Claus

[Blade Analysis for Propellers]

HI Jake, can you send me the step file? info@friendship-systems.com would work for that.

Cheers

Claus

[Blade Design]

Yes! We usually define normalized parametric section definitions, therefore all controls are relative to C. This does not hold for skew, rake and pitch, those inputs are blade parameters, not section parameters.

[Extract volume in batch mode]

You can write the value in a separate file if you want. If you look up the code snippet for "write file" in  the feature editor, you should get a hint how you can write a file.

[Blade Design]

Thickness is not only normalized by R but also by Chord. So it is t/c.

Best

Claus

[modeling gap problem]

For the horizontal flat parts you could just remove the surfaces and extrude the edges to the centerplane.

[modeling gap problem]

Gaps usually affect the meshing/CFD process, no matter if they are in the original or modified parts.

[modeling problem]

The model is unfortunately very bad. There are big gaps between several surfaces. I will see if I can find a repaired one.

Best Regards

Claus

[Free deformation of bulb parameters and connection openfoam problem]

If you search the Help for Series, you will understand how they work.

If you search for openfoam in the documentation (Help), you will get to the Ahmedbody openfoam integration.

Cheers

Claus

[modeling problem]

First of all you have to get rid of the open edges. You can try to use the sew function in the "add sources" operation. If you don't succeed, please send me the IGES or the project file, then I can have a look.

Cheers

[參數化建模 STL模型檔]

Hi Yukai,

The red lines indeed indicate errors in the triangulation. STL files are just discrete representations of a geometry. They are not parameterized and the triangles do not even know their neighbors. Still, if you have an STL that is clean and that can be used for CFD analysis, you can apply parametric modifications to it in CAESES. Please see the tutorials, e.g. lackenby hull variation or mesh morphing. You can also use the other transformations on an imageTrimesh, such as deltashift, free form deformation.

For a complete parametric model you have to create a parametric model of the vessel yourself.

Kind Regards

Claus

[Problem generating solid]

HI Carlos,

looks like there is something wrong with your transom edge. Can you share the project?

If you model a transom surface from the edge and a deck line, you should be able to close this Brep.

Cheers

Claus

[How to create solid geometry from surface geometry?]

You can generate a BRep from the surfaces. Just select the Surfaces and then create a BRep, see below.

[Help generating smooth hull surfaces]

Can you share your project file, please? It is a bit difficult to give an advice if we can't see what the exact problem is. 

Best Regards

Claus

[how to get the angle of waterline and buttock line]

Hi Susan,

if you have a curve (which could also be the edge of a surface) you can "ask" the curve.gettan() with the corresponding arguments at which parameter value of the curve and in which plane, see below.

[Some questions about CAESES ACT、 workbench and propeller feature]

Today is a public holiday in Germany.

The forum is meant to be a platform where non-commercial users support other non-commercial users. Our support team certainly helps out here and there to make them happy, but the priority for us is to support our paying customers, first.

Kind Regards

Claus

[Organize the Object Tree]

Hey Gustaf, is there any reason why you stick to CAESES 4?