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Geometrical Scaling Effects on Supersonic Inlet Performance

[+] Author Affiliations
Rasoul Askari, Mohammad Reza Soltani

Sharif University of Technology, Tehran, Iran

Afshin Khajeh Fard

Shahid Sattari University, Tehran, Iran

Paper No. IMECE2017-71912, pp. V001T03A009; 8 pages
  • ASME 2017 International Mechanical Engineering Congress and Exposition
  • Volume 1: Advances in Aerospace Technology
  • Tampa, Florida, USA, November 3–9, 2017
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5834-9
  • Copyright © 2017 by ASME


The effects of geometrical scaling on a supersonic external compression axisymmetric inlet are investigated. Various lower and higher geometrical scales of supersonic inlet are considered as the case studies. The inlet flow is simulated numerically using RANS solver along with the SST k-w turbulence model. The numerical results are in an acceptable agreement with the NACA experimental data at free stream Mach number of 1.79 and at zero angle of attack. The results show that the static pressure distribution of the inlet flow experiences some differences for various scales especially at the regions of the flow entrance and throat area. The mean flow Mach number and the mass flow rate at the Aerodynamic Interface Plane (AIP) increases with increasing the inlet scaling. The increasing of inlet geometrical scale results in an increase in the pressure recovery. However there is no sensitive variation on the flow distortion.

Copyright © 2017 by ASME



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