Turbulence Modeling Resource

DNS: Boeing Gaussian Bump at Three Reynolds Numbers

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The data on this page were provided by Ali Uzun.

These DNS cases use the so-called "Boeing Speed Bump" geometry. They were run using compressible direct numerical simulation (DNS) codes. This is a 2-D "slice" of the full experimental configuration, documented on the page: Exp: Smooth Body Separation Experiment (SBSE) - Boeing Gaussian Bump with Error Function Shoulders. These DNS results are at three Reynolds numbers of 4 million, 2 million, and 1 million based on width of the experimental model (L), and have been documented in the following publications:

• Uzun, A. and Malik, M. R., "Direct Numerical Simulation of Flow Past a Gaussian Bump at a High Reynolds Number", Theor. Comput. Fluid Dyn., Vol. 39, Article 30, 2025, https://doi.org/10.1007/s00162-025-00749-x.
• Uzun, A. and Malik, M. R., "High-Fidelity Simulation of Turbulent Flow Past Gaussian Bump", AIAA Journal, Vol. 60, No. 4, April 2022, pp. 2130-2149, https://doi.org/10.2514/1.J060760.
• Uzun, A., and Malik, M. R., "Simulation of a Turbulent Flow Subjected to Favorable and Adverse Pressure Gradients," Theoretical and Computational Fluid Dynamics, Vol. 35, No. 3, 2021, pp. 293-329, https://doi.org/10.1007/s00162-020-00558-4.

The following figures only show results for Re_L=2 million and 1 million:

DNS data are provided below.

• README.txt
• Re = 4 million:
  • SpeedBump-ReL-4M-Cf.dat
  • SpeedBump-ReL-4M-Cp.dat
  • SpeedBump-ReL-4M-Statistics.dat.zip, zipped file
• Re = 2 million:
  • SpeedBump-ReL-2M-Cf.dat
  • SpeedBump-ReL-2M-Cp.dat
  • SpeedBump-ReL-2M-Statistics.dat.zip, zipped file
• Re = 1 million:
  • SpeedBump-ReL-1M-Cf.dat
  • SpeedBump-ReL-1M-Cp.dat
  • SpeedBump-ReL-1M-Statistics.dat.zip, zipped file

Return to: Data from DNS - Intro Page

Recent significant updates:
05/05/2026 - added data for Re_L=4 million

Page Curators: Christopher Rumsey, Ethan Vogel, Clark Pederson
Last Updated: 05/05/2026