UFR 4-19 Evaluation: Difference between revisions

From KBwiki
Jump to navigation Jump to search
No edit summary
Line 1: Line 1:
= Converging-diverging transonic diffuser =
= Converging-diverging transonic diffuser =
{{UFRHeader
{{UFRHeader
Line 26: Line 25:
|align="center"|'''Figure 9:''' Shock-waves positions and experimental measurements
|align="center"|'''Figure 9:''' Shock-waves positions and experimental measurements
|}
|}
 
===The weak Mach number case===
The modelling results of the three adopted turbulence models are compared with the
available experimental data for the "weak" Mach number case in figs.10 and 11.
     


<br/>
<br/>

Revision as of 06:15, 13 April 2016

Converging-diverging transonic diffuser

Front Page

Description

Test Case Studies

Evaluation

Best Practice Advice

References

Confined flows

Underlying Flow Regime 4-19

Evaluation

Comparison of CFD Calculations with Experiments

For both "weak" and "strong" Mach number cases,for comparison with the calculations, experimental data for four measurements stations after the shock-wave (h1, h2, h3, h4) are selected for the longitudinal velocity as well as pressure distributions along the bottom and the top wall of the diffuser. A representative figure of the shock-wave positions and the measurement stations is shown in fig.9.The x-location of the axial measurement stations are non-dimensionalized with the diffuser throat height,resulting in the following four stations: h1 = 2.822, h2 = 4.611, h3 = 6.340 and h4 = 7.493.

UFR4-19 Fig9.png
Figure 9: Shock-waves positions and experimental measurements

The weak Mach number case

The modelling results of the three adopted turbulence models are compared with the available experimental data for the "weak" Mach number case in figs.10 and 11.





Contributed by: Z. Vlahostergios, K. Yakinthos — Aristotle University of Thessaloniki, Greece

Front Page

Description

Test Case Studies

Evaluation

Best Practice Advice

References


© copyright ERCOFTAC 2024