UFR 3-36 Evaluation: Difference between revisions

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!align="center" colspan="2"|Figure 5: Streamwise (u'u'), wall-normal (v'v') and shear-stress (-u'v') profiles. Solid line: uDNS, dashed line: SSGLRR-<math>\omega</math>
!align="center" colspan="2"|Figure 5: Streamwise (u'u'), wall-normal (v'v') and shear-stress (-u'v') profiles. Solid line: uDNS, dashed line: SSGLRR-<math>\omega</math>

Revision as of 17:25, 7 December 2022

HiFi-TURB-DLR rounded step

Front Page

Description

Test Case Studies

Evaluation

Best Practice Advice

References

Semi-confined flows

Underlying Flow Regime 3-36

Evaluation

The RANS simulations described in a previous section are compared and assessed to uDNS computation results preformed by UNIBG. The setup and results of this uDNS computation can be found under Lib:DNS 1-5.

Comparison of uDNS results with RANS results

Figure3 cf.png Figure3 cp.png
Figure 3: Skin friction and pressure coefficient on the body wall. Solid line: uDNS, dashed line: SSGLRR-, dashdotted line: k-

Non-dimensional quantities:

  • Pressure coefficient:
  • Skin-friction coefficient:

with the wall pressure , the freestream pressure , the freestream density , the freestream velocity and the wall shear stress .


Figure4 uUin.png Figure5 vUin.png
Figure 4: Streamwise and wall normal velocity profiles along x-axis. Solid line: uDNS, dashed line: SSGLRR-, dashdotted line: k-
Figure5 uu.png Figure5 vv.png
Figure5 uv.png
Figure 5: Streamwise (u'u'), wall-normal (v'v') and shear-stress (-u'v') profiles. Solid line: uDNS, dashed line: SSGLRR-





Contributed by: Erij Alaya and Cornelia Grabe — Deutsches Luft-und Raumfahrt Zentrum (DLR)

Front Page

Description

Test Case Studies

Evaluation

Best Practice Advice

References


© copyright ERCOFTAC 2024