UFR 4-18 Evaluation: Difference between revisions

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=== Local comparisons ===
=== Local comparisons ===
==== Mean pressure coefficient ====
[[Image:Cp_midplane_Re3000_rows1_2_3_5.jpg]]<br/>
'''Figure ??:''' Pressure coefficient along the midline of the pins - LES at <math>Re_D = 3000</math>
[[Image:Cp_midplane_Re10000_rows1_2_3_5.jpg]]<br/>
'''Figure ??:''' Pressure coefficient along the midline of the pins - LES and URANS computations at <math>Re_D = 10000</math>


==== Mean velocity profiles ====
==== Mean velocity profiles ====
===== <math>Re_D = 3000</math> =====


[[Image:U_Re3000_lineB_rows1_2_3_5.jpg]]<br/>
[[Image:U_Re3000_lineB_rows1_2_3_5.jpg]]<br/>
'''Figure ??:''' Mean stream-wse velocity component along line B - LES at <math>Re_D = 3000</math>
'''Figure ??:''' Mean stream-wse velocity component along line B - LES at <math>Re_D = 3000</math>
[[Image:U_Re10000_lineB_rows1_2_3_5.jpg]]<br/>
'''Figure ??:''' Mean stream-wse velocity component along line B - LES and URANS computations at <math>Re_D = 10000</math>
==== ''R.m.s.'' velocity profiles ====


[[Image:Urms_Re3000_lineB_rows1_2_3_5.jpg]]<br/>
[[Image:Urms_Re3000_lineB_rows1_2_3_5.jpg]]<br/>
'''Figure ??:''' ''R.m.s.'' of the stream-wise velocity component along line B - LES at <math>Re_D = 3000</math>
'''Figure ??:''' ''R.m.s.'' of the stream-wise velocity component along line B - LES at <math>Re_D = 3000</math>
===== <math>Re_D = 10000</math> =====
[[Image:Cp_midplane_Re10000_rows1_2_3_5.jpg]]<br/>
'''Figure ??:''' Pressure coefficient along the midline of the pins - LES and URANS computations at <math>Re_D = 10000</math>
[[Image:U_Re10000_lineB_rows1_2_3_5.jpg]]<br/>
'''Figure ??:''' Mean stream-wse velocity component along line B - LES and URANS computations at <math>Re_D = 10000</math>


[[Image:Urms_Re10000_lineB_rows1_2_3_5.jpg]]<br/>
[[Image:Urms_Re10000_lineB_rows1_2_3_5.jpg]]<br/>
Line 99: Line 104:
[[Image:Urms_Re10000_lineB_rows1_2_3_5_details.jpg]]<br/>
[[Image:Urms_Re10000_lineB_rows1_2_3_5_details.jpg]]<br/>
'''Figure ??:''' Resolved and modelled contributions to the ''r.m.s.'' of the stream-wise velocity component along line B - URANS computations at <math>Re_D = 10000</math>
'''Figure ??:''' Resolved and modelled contributions to the ''r.m.s.'' of the stream-wise velocity component along line B - URANS computations at <math>Re_D = 10000</math>
===== <math>Re_D = 30000</math> =====
==== ''R.m.s.'' velocity profiles ====
===== <math>Re_D = 3000</math> =====
===== <math>Re_D = 10000</math> =====
===== <math>Re_D = 30000</math> =====


==== Nusselt number on the bottom wall ====  
==== Nusselt number on the bottom wall ====  

Revision as of 10:21, 16 April 2015

Flow and heat transfer in a pin-fin array

Front Page

Description

Test Case Studies

Evaluation

Best Practice Advice

References

Confined Flows

Underlying Flow Regime 4-18

Evaluation

Comparison of CFD Calculations with Experiments

Discuss how well the CFD calculations of the assessment quantities compare with experiment and with one another. Present some key comparisons in the form of tables or graphical plots and, where possible, provide hyperlinks to the appropriate results database. Results with different turbulence models covering as wide a range as possible should be included in the discussion. However, if too many different calculation results are available (e.g. from workshops) do not present all the comparisons here. A selection should be made showing results only for the most typical and practically important models. Comprehensive comparisons can be made available via a link to the associated databases. Finally, draw conclusions on the ability of the models used to simulate the test case flow.

Global comparisons

Pressure loss coefficient

Pressure loss coefficient values for the different computations
LES3000 LES10000 EBRSM10000 PHI10000 kwSST10000 EBRSM30000 PHI30000 kwSST30000
0.1076 0.0939 0.0963 0.0789 0.0883 0.0771 0.0615 0.0744



Friction Final Results.jpg
Figure ??: Pressure loss coefficient

Average Nusselt Number

Average Nusselt number on the bottom wall
Exp. 3000 Exp. 10000 Exp. 30000 LES3000 LES10000 EBRSM10000 PHI10000 kwSST10000 EBRSM30000 PHI30000 kwSST30000
22.1 54.1 111.5 21.6 48.6 48.1 37.6 33.1 119.4 93.3 72


NusAv Final Results.jpg
Figure ??: Averaged Nusselt number on the bottom wall

Local comparisons

Mean pressure coefficient

Cp midplane Re3000 rows1 2 3 5.jpg
Figure ??: Pressure coefficient along the midline of the pins - LES at

Cp midplane Re10000 rows1 2 3 5.jpg
Figure ??: Pressure coefficient along the midline of the pins - LES and URANS computations at

Mean velocity profiles

U Re3000 lineB rows1 2 3 5.jpg
Figure ??: Mean stream-wse velocity component along line B - LES at

U Re10000 lineB rows1 2 3 5.jpg
Figure ??: Mean stream-wse velocity component along line B - LES and URANS computations at

R.m.s. velocity profiles

Urms Re3000 lineB rows1 2 3 5.jpg
Figure ??: R.m.s. of the stream-wise velocity component along line B - LES at

Urms Re10000 lineB rows1 2 3 5.jpg
Figure ??: R.m.s. of the stream-wise velocity component along line B - LES and URANS computations at

Urms Re10000 lineB rows1 2 3 5 details.jpg
Figure ??: Resolved and modelled contributions to the r.m.s. of the stream-wise velocity component along line B - URANS computations at

Nusselt number on the bottom wall



Contributed by: Sofiane Benhamadouche — EDF

Front Page

Description

Test Case Studies

Evaluation

Best Practice Advice

References


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