I am using Chinese Windows OS, and try to use function process (FProcess) to execute external script. It seems FProcess runs OK, but the Console does not show the error message correctly. It looks like:

*** INFO Process : started ... [D:\\test.bat]

hello world

����: ��֧���������¶����������˳��˽��̡�

*** INFO Process : finished [exit code 0]

The codes in feature definition are quite simple.  They are

string exe("D:\\test.bat")
process mytool(exe)
mytool.run()

And the test.bat is also very simple. It is

@echo off
echo hello world

timeout /t 10 /nobreak >nul

The error message shows when the timeout line is executed, which shows like a list of question marks. I guess it is because the Console window does not support utf-8 characters. It would be much easier for me to debug the codes if the Console window could show correct message.

By the way, instead of Software Connector, the reason I use FProcess to get info from external program is that the amount and positions of datas in the input.txt are not fixed. I have tried to use runProcessBlocking to execute the external script, but there is very limited infomation about this function from the documentation. I don't know if there is any example in the tutorials. If you could give some simple examples about runProcessBlocking, it would be very helpful.

Thanks.

For ship engineer, hull line need to be imported into NAPA for ship stability calculation and subsequent construction. So NAPA-format hull line file is important for ship engineer to edit in NAPA.

I want to export NAPA-format hull line file (see attached) from CAESES based on a hull surface (Brep surface or Trimesh sufface), which is a txt file, not iges or stl. 

Have you developed an output feature yet? Can you provide me with a reference?

Thank you.

KCS_hull_SVA_Napa.txt

It would be nice to set a direct password or encryption for the feature definition.

Thanks

One feature I have been looking for (that I don't think is available) is to be able to retrieve sectional properties from a number of cross sections or planar surfaces.

I am often doing structural analysis of hydrofoils and being able to retrieve sectional interia/torsion constant information and operate on them would be a huge help. 

https://github.com/robbievanleeuwen/section-properties is a potential option but I haven't had the time to try and integrate it myself.

Looking forward to seeing what CAESES 4.5 has in store for us .. 

Britt

I am not sure if it has recently changed in CAESES, but I have a suggestion to speed up optimization process.

Same variants from the previous populations are created and analysed again and again. Of course,  it is the nature of the genetic algorithms and nothing to do with CAESES. However, it would be very nice if CAESES searchs for all designs one by one to see whether current variant is identical with one of the designs created before. If this is the case, just copying the results, analysis files and all the other documents from same variant's folder to the current one should be enough. Exhaustive search is much more faster than performing CFD/FEM analysis.

Stay healty and safe.

As a PhD student of Marine Engineering with about 7 years’ experience in Computational Geometry and Mesh Generation, 3 years of which have been spent to Parametric Design and Optimization, I am so glad to find you guys who did such a good job around Parametric Design.

But it seems there are some points which have been neglected, as far as I understood from the video clip on “https://www.youtube.com/watch?v=8x75TJUmoDM”. For example, the propeller has been parameterized by some 2D profiles (NURBS curves) which make it possible for the user to modify them by moving their control points. In fact, I believe, providing some control points without defining any constraints to control their movements, as well as, skipping their effects on each other may cause lots of non-applicable geometries to be generated.

I should tell you that I have developed a C++ program to design ship hulls, propellers and rudders by parameterization approach. I’ve actually applied my own method in propeller designing module of this program, and there are no such issues. In other word, my program provides a design space rather than a tool just offering the ability of moving the control points. By supporting this design space defined by 26 parameters, my program is able to use, say Genetic Algorithm, for searching the optimum answer without produce any non-applicable models.

To share these with you, I tried to sign up in your forum, but surprisingly I saw that my country name is not in your registry menu and I had to register with another country name! which made me feel very bad.

FYI, I’m from IRAN and I hope this happened by mistake and will be resolved.

By the way, I have plenty of ideas to improve your software. Enclosed you can see some of my program's results.

Prop-1b-SK0.bmp

Propeller.bmp

And here are parameters:

best regards

Is there a CAESES download compatible with Apple iOs (for macbook or ipad)? Thanks!

Chris

Please Ill like to ask if there is a reference document that can be used in a technical paper that used CAESES for optimization?.

I dont know if there is one but i think it will be helpful especially to students using CAESES. Im using CAESES for most of my work and will like to reference the tool in my publications.

Eg. for DAKOTA Im using the following reference below which I got from their website:

1. Adams, B.M., Bauman, L.E., Bohnhoff, W.J., Dalbey, K.R., Ebeida, M.S., Eddy, J.P., Eldred, M.S., Hough, P.D., Hu, K.T., Jakeman, J.D., Swiler, L.P., and Vigil, D.M., "DAKOTA, A Multilevel Parallel Object-Oriented Framework for Design Optimization, Parameter Estimation, Uncertainty Quantification, and Sensitivity Analysis: Version 5.4 User's Manual," Sandia Technical Report SAND2010-2183, December 2009. Updated April 2013.

Thanks a lot.

Best Regards,

Richard

A few suggestions for the future.

It would be great to be able to define weights in the (ship) model: position and weight values of engines, hulll thickness, and others. Specially for the hydrostatic analysis.

Improve the connectivity to OpenFOAM. I understand the "connection" file is up to me to prepare, but I couldn't finish succesfully the tutorials with the included connection...

It would be great to define structural frames in a automated way. (Maybe there is, and I haven't found it yet).

I would love if there was a more extensive manual to the program, or other learning resources. Searching through so many forum posts (through a google search with ads), some as far back as 2013, is really a task. And there's not always an answer. The forum is good for solving particular cases, and sharing the solutions, but to learn to use the different capabilities of the program I'd suggest something like a manual (somebody suggested an all-in-one resource), updated with every version.  The tutorials and videos are good too, but do not comprise all the software's capabilities.
 

Have a good day!

Xavier

Actually, every naval architect need to view lines plan in AutoCAD. Normally, the procedure is they get a hull design from CAESES, for instance, and then import it into NAPA by igs format, then get a dwg file from NAPA. It's low efficient and complicated.

So it would be really helpful if CAESES can get a lines plan in CAESES. Techincally, I think it's not too difficult, just get some sections from X, Y ,Z directions. 

I attach a lines plan to make sure you really understand what I mean.

Daniel 

It would great, if it was possible to draw lines, arrow, text in diagram viewer.

Regards,

Victor Bolbot

When I wanted to present results of an optimization process, it was necessary to adjust axis discretization. For instance, the discretization in x-axis was 0.0714, 0.243, while I wanted 0.1, 0.2, etc as can be seen in attached picture. The same happened with y-axis. As I understood, that is not possible in CAESES, so I had to use other utility.

This is a change I would really like to see in CAESES. 

Regards,

Victor Bolbot