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Found 4 results

  1. Hi together, There have been several questions about impeller and pump design with CAESES which is the reason for putting together the following brief summary: CAESES is used by several major pump makers (KSB, Ebara, Grundfos, DMW), mostly in the context of impeller and volute/casing optimization. In the context of turbocharger design, CAESES is used by e.g. MTU (large Diesel engines) for compressor and turbine optimization. There are free academic versions of the CAESES pro edition for students and PhD students as well as trial licenses, plus special editions for small companies, start-ups and freelancers. COMPARISON TO OTHER TOOLS Compared to other design tools on the market, CAESES focuses on automated design studies with your simulation tools. In most cases, there is already some sort of a baseline design that needs further optimization. Based on this design, a parametric CAESES model is created and automated. The possibilities for customization and shape fine-tuning are massive, so that specialized (company-specific) design processes can be completely defined in CAESES. No black box models etc. This is one important key issue, i.e., flexibility and full customization - besides the fact of having a 100% robust variable geometry for automated processes. IMPELLER BLADES There is functionality for creating parametric impeller blades (meridional contour definition, mapping from 2D onto 3D stream surfaces), which can also include analysis and optimization of the channel areas etc. See the turbomachinery section for more details. A water pump is described in this blog post. Any type of impeller can be parameterized, including complex shapes such as turbine scallops. VOLUTES Here is an overview with some animations. Basically, CAESES focuses on robust modeling of any volute type (in particular: turbochargers, pumps). Design constraints can also be built into the model, as well as typical controls (A/R distribution etc). The more complex your volute is, and the more problems you have to create new design candidates (automated), the more you should consider trying out CAESES. CFD AUTOMATION CAESES users also integrate their CFD and preliminary design tools. With this, a new design candidate can immediately be analyzed, directly within the CAESES GUI. Any open source, in-house or commercial tool can be coupled. You just need a batch mode for these tools. Excel sheets can also be accessed. For CFD analysis, the flow domain can be directly derived from the parametric impeller geometry. There is a CAESES ACT app available, to integrate CAESES into the ANSYS Workbench and to run optimizations with e.g. OptiSLang. MORE MATERIAL I recommend to browse through this page. Please find also attached a related presentation from the FRIENDSHIP SYSTEMS Users' Meeting 2013. I also added some related pics and animations. Unfortunately, it is not that easy to show more material since most data is confidential. Anyway, I hope this post helps a bit in terms of a quick overview. Cheers Joerg LAST UPDATE JULY 2019 UM2013-07-klemm-diffuser-design-for-multistage-pumps-with-FFW.pdf
  2. Hi together, CAESES can be used for designing a variety of turbomachinery and engine components (impellers, volutes, ducts, axial blades,...). I have attached some pictures and animations, just to give you an idea of the applications. There is also a page about the turbomachinery industry on the CAESES website. Check out the blog where turbomachinery design stories get posted on a regular basis (most of the attached pictures are taken from these blog posts). The focus of CAESES is: Fast and efficient design studies and CFD-driven shape optimization. The robust variation (manual/automated) of turbomachinery components is really the interesting part in CAESES. The geometry models are typically highly customized, i.e., company-specific know-how can be fully integrated. There is an internal scripting environment to define custom methods and processes. Complex parametric models can be wrapped into an easy-to-use interface (so that they can be readily used by non-experts of CAESES). Parametric support geometry such as segments for the flow and structural analysis can be part of the model, too. As a side note, you can optionally plug-in your CFD tool and run optimizations right away - from within the CAESES GUI. There are integrated optimization methods and some handy post-processing capabilities. Alternatively, you can use your own optimization tools and run CAESES in batch mode. There are free academic versions of the CAESES pro edition for students and PhD students, as well as trial licenses with flexible time frames. There are also special editions for small companies, start-ups and freelancers. Hope this helps, Joerg LAST UPDATE FEBRUARY 2018
  3. Hi everyone, When I start Caeses, 3Dview is not displayed. Thence I can't use CAD. There are some windows missing as well. I tried to open a Sample, but it only opened the documentation of the Sample and nothing else. I have made a screenshot to show what I can see. Maybe it's something stupid, but I don't know what to do to solve this problem. Has anybody any suggestions?
  4. CAESES is used for the parametric design of axial fans and similar turbomachinery products, mostly in the context of simulation-driven shape optimization. In particular, CAESES is used if you need robust variable geometry models for automated studies. The comprehensive CAD modeling capabilities are geared towards simulation and give fan designers full flexibility (no black box, customization possibilities). More information about turbomachinery design software can be found here. I have also attached a few animations that were generated in CAESES. The design variables of the axial fan model were varied automatically using the integrated variation methods. Note that this is a rather simple model which is also shipped with the software. It can be used as a reference design to set up custom models. The hub and shroud modeling is demonstrated, as well as the 2D-3D mapping of the cylindrical sections and some Boolean Operations to cut the blade at the tip and merge it with the hub. The fillet size can also be controlled by a parameter. If needed, you could also automatically derive the periodic flow domain for automated meshing with grid generation tools or CFD packages.
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