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Computational Modeling of Vortex Generators for Turbomachinery

Computational Modeling of Vortex Generators for Turbomachinery


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About the Book

In this work computational models were developed and used to investigate applications of vortex generators (VGs) to turbomachinery. The work was aimed at increasing the efficiency of compressor components designed for the NASA Ultra Efficient Engine Technology (UEET) program. Initial calculations were used to investigate the physical behavior of VGs. A parametric study of the effects of VG height was done using 3-D calculations of isolated VGs. A body force model was developed to simulate the effects of VGs without requiring complicated grids. The model was calibrated using 2-D calculations of the VG vanes and was validated using the 3-D results. Then three applications of VGs to a compressor rotor and stator were investigated: 1) The results of the 3-D calculations were used to simulate the use of small casing VGs used to generate rotor preswirl or counterswirl. Computed performance maps were used to evaluate the effects of VGs. 2) The body force model was used to simulate large part-span splitters on the casing ahead of the stator. Computed loss buckets showed the effects of the VGs. 3) The body force model was also used to investigate the use of tiny VGs on the stator suction surface for controlling secondary flows. Near-surface particle traces and exit loss profiles were used to evaluate the effects of the VGs. Chima, R. V. Glenn Research Center NASA/TM-2002-211551, E-13326, NAS 1.15:211551, GT-2002-30677


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Product Details
  • ISBN-13: 9781721508549
  • Publisher: Createspace Independent Publishing Platform
  • Publisher Imprint: Createspace Independent Publishing Platform
  • Height: 279 mm
  • No of Pages: 30
  • Spine Width: 2 mm
  • Width: 216 mm
  • ISBN-10: 1721508546
  • Publisher Date: 19 Jun 2018
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Weight: 95 gr


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