Mr. Heinrich von Zadow

Dear Aina, it seems that you have not selected any points for the 3 transformations that you have prepared. I attached a small demo of how that's done as well as the modified project. FFDbulb_editPoints.apng Best regards Heinrich freeformdeformationbulb_HvZ.cdb

Dear Aina, have you checked my suggestions from above? If this does not help, feel free to attach the project here and I am happy to take a quick look. Best regards Heinrich

Dear Rizuan, yes, indeed -- an image surface will always be an image of only one individual surface. You can wrap multiple surfaces into a surface group. An image surface group would then allow you to transform all of them at once. Alternatively, you can use a BRep which also accepts transformations and can have multiple sources. Best regards, Heinrich

Hi Osman, you can use a parameters to define the bounds and design variables to scale in-between. See attached example. Cheers, Heinrich parameterScaling.cdb

Hi Carlos, we don't ship anything readily with CAESES but maybe you can start off from an imported geometry -- something like a standard test case (KVLCC2 or similar) and then apply partially parametric modelling techniques such as Free From Deformations or BRep Morphing to vary the shape. Best regards, Heinrich

Dear Kala, I recommend you take a look a the design velocities to understand how a certain design variable impacts the shape. On our channel you can find a video that explains the concept: https://watch.caeses.com/w/tvEDgJu9ThsVZPPDUTCiJJ Cheers, Heinrich

Hi Rizuan, very good. FINE and CAESES are well known combination so hopefully it will be 'smooth sailing'... Cheers, Heinrich

Hi Rizuan, the important thing to note is, that CAESES itself does not offer any sort of CFD computations. If you want to calculate the total resistance Rt you need to connect CAESES to a CFD solver of your choice through the Software Connector. Which CFD code do you typically use or have licenses available for? Best regards, Heinrich

Hi Rizuan, I recommend you start by looking through the tutorials and samples related to hull design. Which software are you planning to use for CFD? Best regards, Heinrich

Dear Milad, If I understand correctly, then yes, that is perfectly normal. The 2000 LHS samples is what you use to train the model. If you'd evaluate your model at these exact points, the prediction would perfectly match the training data (at least for Kriging that is the case). However, the model cannot just predict a pareto front "out of the blue". Usually, what we do is, to run a MOGA (multi objective genetic algorithm) optimization on the model. With large enough populations sizes and number of generations this allows to quickly find pareto-optimal designs (that means that for those designs there is not other designs better in one objective without being worse in an other objective). Best regards, Heinrich

Dear Yuwen, the code is not that straight forward to explain. Mostly it's sine/cosine distribution functions, but there are quite a few additions here and there. Would you not rather need a topology like outlined in the attached project, anyway? Cheers, Heinrich gridDemo.cdb

Dear Yuwen, I'd have to ask a developer to take a look into the code to answer that question. However, I think it might be enough for you to know that the distribution (if not set to be uniform) is dependent on the parametrization of the underlying surface. Hence, by parametrizing the surface differently, you can freely control the distribution of cells. Cheers, Heinrich

What exactly did you do when "running Dakota". Did you run an optimization or just calculated one set of pareto designs? Could it be that the blue dots in the second plot are additional samples that where generated before the generation of the first Surrogate?

Hi Milad, I am not quite sure if I understand the question. You mean that out of the 2000 LHS samples only a few are shown after you have calculated the pareto designs? Do you create the plots in Excel and add the pareto designs from the finaldata file? Cheers, Heinrich

Hi Carlos, I think I remember these black BReps from the good old CAESES4 days 😉 If I recall correctly this happens when importing IGES/STEP from certain other CAD tools and can be easily resolved by just assigning a different color to the imported parts. Since they are currently black, you would have to use the BRep operation "remove colors" first and then assign a different color... Best regards, Heinrich