UFR 4-19 Evaluation: Difference between revisions
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== Comparison of CFD Calculations with Experiments == | == Comparison of CFD Calculations with Experiments == | ||
For both "weak" and "strong" Mach number cases,for comparison with the calculations, | For both "weak" and "strong" Mach number cases,for comparison with the calculations, | ||
experimental data for four measurements stations after the shock-wave ( | experimental data for four measurements stations after the shock-wave (h<sub>1</sub>, h<sub>2</sub>, h<sub>3</sub>, h<sub>4</sub>) are | ||
selected for the longitudinal velocity as well as pressure distributions along the bottom | selected for the longitudinal velocity as well as pressure distributions along the bottom | ||
and the top wall of the diffuser. | and the top wall of the diffuser. | ||
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in fig.9.The x-location of the axial measurement stations are non-dimensionalized with the | 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: | diffuser throat height,resulting in the following four stations: | ||
h<sub>1</sub> = 2.822, h<sub>2</sub> = 4.611, h<sub>3</sub> = 6.340 and h<sub>4</sub> = 7.493. | |||
Figure 9.Shock-waves positions and experimental measurements | Figure 9.Shock-waves positions and experimental measurements | ||
Revision as of 12:20, 12 April 2016
Converging-diverging transonic diffuser
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.
Figure 9.Shock-waves positions and experimental measurements
Contributed by: Z. Vlahostergios, K. Yakinthos — Aristotle University of Thessaloniki, Greece
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