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Found 2 results

  1. ---------------------- Turbomachinery ---------------------- This is a META-thread, which helps you to keep track of all posts relevant to Turbomachinery. - The first post should contain links to all relevant threads. It is re-edited regularly. - I try to keep this META up to date. However, I don't always catch everything, so please post links to any threads you think should be here. I will add them to the existing ones in the first post and periodically clean all other post from this thread. Thanks, Mattia --------------------------------------------------------------------- Modeling and blade design for a centrifugal impeller Modeling of a radial fan Modeling of axial compressor blades using the stream section Modeling of a helical impeller
  2. Hi together, Please find attached a parametric model of a centrifugal impeller which was built in CAESES. The project file will probably also be included in version 3.0.11. Note that pretty much everything can be customized in this model and used for manual or automated blade design, such as: Merdional contour (i.e. hub and shroud contour)Profile shape by means of user-defined thickness distributions and beta-angle distributionsFillet shape at the hub region by using a constant factor (BTW: this can also be varied with a function along the blade)Ellipse factor of leading edgeSize of tip gapRotational directionNumber of bladesThickness of casing The splitter blade is completely decoupled from the main blade in terms of the beta-distribution (so this gives more freedom) - but can be linked to the main blade, too. In addition, the model comes with some support geometries for meshing/CFD ("periodic boundaries"). These are automatically adjusted to the blade shapes. The camber lines of the blades are generated from the trailing edge which makes it easier to vary the beta distributions (e.g. fix the TE ends of the blades). There is also a feature definition included which generates the camber line with the leading edge as starting point. When working with the model, switch off all scopes that are "downstream" of where you currently manipulate things. For instance, if you want to change the hub and shroud contour, then set the scopes 02_main, 03_splitter and 04_cake invisible. If you want to change the beta distributions, only visualize the sections that are given in 00_sections. This allows interactive changes to the model with a very short response time. You can also switch off the cake part since it is only there for visualization purposes and CFD pre-processing. Let me know what you think about the model (of course, I hope you'll like it....). Cheers Joerg UPDATE AUGUST 2015: There are new samples directly included in CAESES that you can use for impeller modeling. See my more recent post below. The project files in the attachment do not work correctly for CAESES 4.x versions, we now have much easier ways to design and control hub fillets. UPDATE FEBRUARY 2016: I removed the old project file and added an updated CAESES model to this post. Should work with versions >= 4.0.3. UPDATE FEBRUARY 2017: Note that there are now FULL FREE ACADEMIC versions of the pro edition CAESES for students and PhD students as well as trial licenses with variable time frames. There are also special editions for small companies, start-ups and freelancers. FS_CENTRIFUGAL_IMPELLER.pdf turbocharger_easyuse.fdb
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