The Challenges & Cures of CFD Solution Failures

by Mark R. Anderson on Aug 3, 2018 10:04:04 AM

Computational fluid dynamic analysis (CFD) has become a standard part of the turbomachinery design process. Within Concepts NREC’s Agile Engineering Design System, FINE/Turbo, from our Partner NUMECA International, is the tool used to accomplish aerodynamic analysis of designs by applying standard methods of three-dimensional analysis. However, arriving at a converged CFD solution in any CFD program can sometimes be a challenge.

Great Designs Deserve to Shine

by George C. Zitka, P.E. on May 4, 2018 9:18:40 AM

If you are a turbomachinery engineer, you know you can spend days, weeks, or even months analyzing various design iterations, looking for the optimal choice for the application.  When you go to present your final design for review, you want it to look as good as you know it is. Choosing the best post-processor for CFD results can not only save time in creating the desired views, but also show solutions at their best.  Without proper post-processing, your solution can lose that "je ne sais quoi" that made it the best design for the application. In other words - it has to look as good as you know it is.

Can you really get something for nearly nothing? In many cases, a properly-designed compressor casing treatment can extend compressor operating range without having to pay an appreciable efficiency penalty. Major automotive turbocharger OEMs have been leading this design effort for years and have successfully gained compressor operating range increase on both sides of the compressor (pressure versus flow) map. In most cases, the range increase has outweighed any efficiency penalty and best of all, these so-called “ported shroud” designs are naturally uncomplicated to implement, meaning that incremental cost is low.

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