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= Test Case = == Brief Description of the Study Test Case==

= Test Case = == Brief Description of the Study Test Case==

= Test Case = == Brief Description of the Study Test Case==

= Test Case = == Brief Description of the Study Test Case==

= Test Case Study = == Brief Description of the Study Test Case ==

===Review of UFR Studies and Choice of Test Case=== ==Test Case==

...UFR 3-18 Description|references=UFR 3-18 References|testcase=UFR 3-18 Test Case|evaluation=UFR 3-18 Evaluation|qualityreview=UFR 3-18 Quality Review|bestpr [2] Obi S., Aoki K. and Madsuda S., &ldquo;Experimental and computational study of turbulent separating flow in an asymmetric plane diffuser&rdquo;, 9<sup>

...UFR 1-02 Description|references=UFR 1-02 References|testcase=UFR 1-02 Test Case|evaluation=UFR 1-02 Evaluation|qualityreview=UFR 1-02 Quality Review|bestpr ..., Zilliac, G., Chow, J., Bradshaw, P., 1995, &ldquo;Numerical/Experimental study of a wing-tip vortex in the near field&rdquo; AIAA Journal Vol.33, No 9, pa

...as the curved backward facing step (see [[UFR 3-31 Test Case|UFR 3-31 Test Case]])[&#8204;[[UFR_3-36_References#3|3]]][&#8204;[[UFR_3-36_References#4|4]]] ...ynold-Averaged Navier-Stokes (RANS) models as well as an experimental test case designed by NASA [&#8204;[[UFR_3-36_References#6|6]]].

...UFR 4-04 Description|references=UFR 4-04 References|testcase=UFR 4-04 Test Case|evaluation=UFR 4-04 Evaluation|qualityreview=UFR 4-04 Quality Review|bestpr ...w in curved ducts of &ldquo;large&rdquo; aspect ratio has been measured to study the effect of convex or concave curvature on a nominally two-dimensional tu

...UFR 4-06 Description|references=UFR 4-06 References|testcase=UFR 4-06 Test Case|evaluation=UFR 4-06 Evaluation|qualityreview=UFR 4-06 Quality Review|bestpr Based on the study test case and a review of related studies it is possible to make the following recomm

...mical and agricultural applications of sprays in flowing environments. The study examines spray from a small low-pressure PSA exposed to low-turbulence cros ...erical simulations of the disperse two-phase flow case. The case allows to study 1) liquid discharge and sheet formation, the primary break-up of the liquid

...UFR 4-04 Description|references=UFR 4-04 References|testcase=UFR 4-04 Test Case|evaluation=UFR 4-04 Evaluation|qualityreview=UFR 4-04 Quality Review|bestpr = Test Case =

...UFR 4-04 Description|references=UFR 4-04 References|testcase=UFR 4-04 Test Case|evaluation=UFR 4-04 Evaluation|qualityreview=UFR 4-04 Quality Review|bestpr Based on the study test case and a review of related studies it is possible to make the following recomm

...test it in turbulent flows requiring a geometrically simple reference test case composed of a thin flexible structure within the turbulent flow regime. A d this study is an interesting benchmark case for FSI in turbulent flow

...UFR 3-18 Description|references=UFR 3-18 References|testcase=UFR 3-18 Test Case|evaluation=UFR 3-18 Evaluation|qualityreview=UFR 3-18 Quality Review|bestpr = Test Case =

...UFR 2-07 Description|references=UFR 2-07 References|testcase=UFR 2-07 Test Case|evaluation=UFR 2-07 Evaluation|qualityreview=UFR 2-07 Quality Review|bestpr This study highlights the importance of the back pressure in numerically modeling an e

...UFR 4-08 Description|references=UFR 4-08 References|testcase=UFR 4-08 Test Case|evaluation=UFR 4-08 Evaluation|qualityreview=UFR 4-08 Quality Review|bestpr ...lent orifice flow in hydropower applications, a numerical and experimental study. Ph.D. Thesis KTH Stockholm, http://media.lib.kth.se/kthdiss.asp (2001)

...UFR 3-12 Description|references=UFR 3-12 References|testcase=UFR 3-12 Test Case|evaluation=UFR 3-12 Evaluation|qualityreview=UFR 3-12 Quality Review|bestpr = Test Case =

exposed to turbulent flows (outdoor tents, awnings...). To study these based on a laminar benchmark. A 3D turbulent test case was also calculated to prove the applicability of the newly developed

...UFR 2-04 Description|references=UFR 2-04 References|testcase=UFR 2-04 Test Case|evaluation=UFR 2-04 Evaluation|qualityreview=UFR 2-04 Quality Review|bestpr ...e) it would be of great value to continue the numerical study of this test case with such models of turbulence for closure, so as to update the assessment

= Test Case = == Brief Description of the Study Test Case ==

...UFR 2-04 Description|references=UFR 2-04 References|testcase=UFR 2-04 Test Case|evaluation=UFR 2-04 Evaluation|qualityreview=UFR 2-04 Quality Review|bestpr = Test Case =

...UFR 2-07 Description|references=UFR 2-07 References|testcase=UFR 2-07 Test Case|evaluation=UFR 2-07 Evaluation|qualityreview=UFR 2-07 Quality Review|bestpr ...Rotor 37 is flawed due to a hub leakage [2], Rotor 67 was chosen for this study. Transonic, three-dimensional flows represent severe challenges for any num

...UFR 1-02 Description|references=UFR 1-02 References|testcase=UFR 1-02 Test Case|evaluation=UFR 1-02 Evaluation|qualityreview=UFR 1-02 Quality Review|bestpr = Test Case =

The turbulent Channel Flow is one of the canonical flows used to study turbulence in wall bounded turbulence. DNS of turbulent channel flow were u Turbulent channel has been one of the canonical test cases to study the characteristics of wall bounded turbulence.

...UFR 4-06 Description|references=UFR 4-06 References|testcase=UFR 4-06 Test Case|evaluation=UFR 4-06 Evaluation|qualityreview=UFR 4-06 Quality Review|bestpr = Test Case =

...UFR 2-03 Description|references=UFR 2-03 References|testcase=UFR 2-03 Test Case|evaluation=UFR 2-03 Evaluation|qualityreview=UFR 2-03 Quality Review|bestpr ...aspect ratio to ensure good shock capturing during the shock movement. (A study is recommended).

...vior was measured for Mach~1.35 which is the “strong” case. For the “weak” case, Mach~1.25, the boundary layer remains attached along the diverging part of

...UFR 4-05 Description|references=UFR 4-05 References|testcase=UFR 4-05 Test Case|evaluation=UFR 4-05 Evaluation|qualityreview=UFR 4-05 Quality Review|bestpr ...ondary flows will be weak compared to decelerating flow. Furthermore, this study will mainly focus on the influence of the mesh and the turbulence model ont

...ption=UFR_2-02_Descr|references=UFR 2-02 References|testcase=UFR 2-02 Test Case|evaluation=UFR 2-02 Evaluation|qualityreview=UFR 2-02 Quality Review|bestpr ...h circular and square cross sections are considered; the actual study test case will be the flow around a square cylinder.

already quite complex due to the unsteady vortex shedding, but in the case of finite-height ...kness of the approach flow ''δ/h'' are the parameters in the finite-height case.

...UFR 3-06 Description|references=UFR 3-06 References|testcase=UFR 3-06 Test Case|evaluation=UFR 3-06 Evaluation|qualityreview=UFR 3-06 Quality Review|bestpr = Test Case =

The present case consists of the flow through a wall bounded pin matrix in a staggered arran In addition to its interest for the complex underlying physics, this case is close to several industrial configurations found in internal cooling of

Our aim in the present test-case is to predict the following physical parameters: ...tion scheme. For High fidelity results, the finer mesh used in the present study is necessary.

...UFR 3-03 Description|references=UFR 3-03 References|testcase=UFR 3-03 Test Case|evaluation=UFR 3-03 Evaluation|qualityreview=UFR 3-03 Quality Review|bestpr = Test Case =

...most of the contributions focus on a certain part of the flow. The present study published in Wood et al. (2016) includes experimental investigations and la ...around hemispheres at a sub-critical Reynolds number of Re = 140,000. The study included different turbulent boundary layers classified in thin, smooth and

interesting area of research is the experimental and computational study of compressible The test case investigated in the current contribution under the framework of the

...UFR 3-05 Description|references=UFR 3-05 References|testcase=UFR 3-05 Test Case|evaluation=UFR 3-05 Evaluation|qualityreview=UFR 3-05 Quality Review|bestpr = Test Case =

...UFR 2-05 Description|references=UFR 2-05 References|testcase=UFR 2-05 Test Case|evaluation=UFR 2-05 Evaluation|qualityreview=UFR 2-05 Quality Review|bestpr 4. A. Jirásek, P.Eliasson and S Wallin (2001a). &ldquo;Computational Study of the High-Lift A-airfoil&rdquo;. AIAA 2001-0708

A purpose of this document is to provide a summary of findings of such a study undertaken in the framework of the EU Research Collaborative == Review of UFR studies and choice of test case ==

...ption=UFR_2-02_Descr|references=UFR 2-02 References|testcase=UFR 2-02 Test Case|evaluation=UFR 2-02 Evaluation|qualityreview=UFR 2-02 Quality Review|bestpr Bearman, P. and Obajasu (1982): An experimental study of the pressure fluctuations on fixed and oscillating square-section cylind

...UFR 4-05 Description|references=UFR 4-05 References|testcase=UFR 4-05 Test Case|evaluation=UFR 4-05 Evaluation|qualityreview=UFR 4-05 Quality Review|bestpr = Test Case =

...UFR 3-12 Description|references=UFR 3-12 References|testcase=UFR 3-12 Test Case|evaluation=UFR 3-12 Evaluation|qualityreview=UFR 3-12 Quality Review|bestpr ...unders k-&epsilon; v²-f) which are all applied to a single test case, namely the flow around a turbine rotor blade.

...UFR 1-02 Description|references=UFR 1-02 References|testcase=UFR 1-02 Test Case|evaluation=UFR 1-02 Evaluation|qualityreview=UFR 1-02 Quality Review|bestpr ...nce model, some conclusions relevant to best practice advice for this test case has been provided by Dacles-Mariani et al (1995), as follows:

...UFR 2-03 Description|references=UFR 2-03 References|testcase=UFR 2-03 Test Case|evaluation=UFR 2-03 Evaluation|qualityreview=UFR 2-03 Quality Review|bestpr = Test Case =

The prediction of the boundary layer and wake profiles for the L1T2 test case differ in a number of respects from the experiment. There is a tendency to ...The test case may be considered to be wholly two-dimensional. The test case may also be considered to be in free-air as the experimental data has been

...UFR 4-08 Description|references=UFR 4-08 References|testcase=UFR 4-08 Test Case|evaluation=UFR 4-08 Evaluation|qualityreview=UFR 4-08 Quality Review|bestpr = Test Case =

...UFR 4-06 Description|references=UFR 4-06 References|testcase=UFR 4-06 Test Case|evaluation=UFR 4-06 Evaluation|qualityreview=UFR 4-06 Quality Review|bestpr ...parisons of the CFD results with experimental data and then focuses on one study in more detail. The document concludes with best practice advice for CFD mo

...UFR 3-07 Description|references=UFR 3-07 References|testcase=UFR 3-07 Test Case|evaluation=UFR 3-07 Evaluation|qualityreview=UFR 3-07 Quality Review|bestpr = Test Case =

= Description of Study Test Case = ...imental Set Up]]''). The <math>R e_{\text {in}}=1330</math>. The presented case is one of three inlet pressure cases (<math>p_{\text {in }}= \mathrm 0.25,

...UFR 2-01 Description|references=UFR 2-01 References|testcase=UFR 2-01 Test Case|evaluation=UFR 2-01 Evaluation|qualityreview=UFR 2-01 Quality Review|bestpr == Review of UFR studies and choice of test case ==

...UFR 3-10 Description|references=UFR 3-10 References|testcase=UFR 3-10 Test Case|evaluation=UFR 3-10 Evaluation|qualityreview=UFR 3-10 Quality Review|bestpr ...der and Rodi (1981). The plane turbulent wall jet is a fairly complex test case, since there is interaction between the inner layer of the flow (from y = 0

...UFR 3-15 Description|references=UFR 3-15 References|testcase=UFR 3-15 Test Case|evaluation=UFR 3-15 Evaluation|qualityreview=UFR 3-15 Quality Review|bestpr ...R) documented here, the 2D backward facing step (BFS) flow is a well-known case. Since it is a simple geometry containing complex fluid dynamic features su

The subject of this Application Challenge is a study of the wind environment around a large airport terminal building (Figure 1) ...lates to an actual civil construction project. A comprehensive wind tunnel study was carried out by BMT on behalf of Atkins to assess the effect of ground l

...e, the shape of the velocity profile was accurately predicted. In a recent study it was demonstrated that only a marginal improvement in the accuracy of the It is recommended that the study be extended to address the effect of numerical and physical parameters (mes

...UFR 2-01 Description|references=UFR 2-01 References|testcase=UFR 2-01 Test Case|evaluation=UFR 2-01 Evaluation|qualityreview=UFR 2-01 Quality Review|bestpr Han, L. S., Cox, W. R. (1983), A Visual Study of Turbine Blade Pressure Side Boundary Layer, Journal of Engineering and P

...UFR 4-03 Description|references=UFR 4-03 References|testcase=UFR 4-03 Test Case|evaluation=UFR 4-03 Evaluation|qualityreview=UFR 4-03 Quality Review|bestpr The study of turbulent flows through a pipe rotating about its axis is of interest fo

...UFR 3-15 Description|references=UFR 3-15 References|testcase=UFR 3-15 Test Case|evaluation=UFR 3-15 Evaluation|qualityreview=UFR 3-15 Quality Review|bestpr = Test Case =

...l-defined flow conditions which makes it especially suited as '''benchmark case for computing separated flows''' and testing RANS and Hybrid LES-RANS metho ...and reattaches naturally at the flat channel bottom. The challenge of this case is to predict the point of separation from that curved surface which has a

...UFR 3-14 Description|references=UFR 3-14 References|testcase=UFR 3-14 Test Case|evaluation=UFR 3-14 Evaluation|qualityreview=UFR 3-14 Quality Review|bestpr = Test Case =

...study, but the Reynolds number is reduced to 2.78 million (40m/s), and the study is focused on slant angles close to the drag crisis, 25° and 35°. Two-com and this test case at:

...UFR 1-02 Description|references=UFR 1-02 References|testcase=UFR 1-02 Test Case|evaluation=UFR 1-02 Evaluation|qualityreview=UFR 1-02 Quality Review|bestpr There are four main areas where this underlying flow regime - tip clearance flow and wing/

...s errors since turbulent quantities like the Reynolds stress tensor or, in case of a two equation model, the turbulent kinetic energy and especially the di ...nt of the inlet boundary condition has to be estimated and we refer to the study done by Hahn et al.<ref name='hahn_investigation_2008'>F. Hahn, C. Olbricht

...UFR 4-05 Description|references=UFR 4-05 References|testcase=UFR 4-05 Test Case|evaluation=UFR 4-05 Evaluation|qualityreview=UFR 4-05 Quality Review|bestpr ...ations performed with the Spalart-Allmaras model in the scope of the AGARD study were performed at a time when this turbulent model was not “mature” enoug

...ption=UFR_2-02_Descr|references=UFR 2-02 References|testcase=UFR 2-02 Test Case|evaluation=UFR 2-02 Evaluation|qualityreview=UFR 2-02 Quality Review|bestpr = Test Case =

...UFR 3-01 Description|references=UFR 3-01 References|testcase=UFR 3-01 Test Case|evaluation=UFR 3-01 Evaluation|qualityreview=UFR 3-01 Quality Review|bestpr == Review of UFR studies and choice of test case ==

...ations and the lower parts show the measurements); (a) Case&nbsp;1; (b) Case&nbsp;2. ...the calculations in [[Evaluation_AC3-12#figure11|Figure&nbsp;11]] for Case&nbsp;2.

...with limited success broad-band tones using 2D meshes, particularly in the case with doors deployed at 90o. Further investigation for 3D effects may improv =='''Simulation Case'''==

...UFR 4-03 Description|references=UFR 4-03 References|testcase=UFR 4-03 Test Case|evaluation=UFR 4-03 Evaluation|qualityreview=UFR 4-03 Quality Review|bestpr ...g a longer time to reach statistical steady state than in the non-rotating case. Although at N&lt;2 a length [[Image:U4-03d32_files_image341.gif]] is suffi

...UFR 4-14 Description|references=UFR 4-14 References|testcase=UFR 4-14 Test Case|evaluation=UFR 4-14 Evaluation|qualityreview=UFR 4-14 Quality Review|bestpr = Test Case =

...UFR 3-06 Description|references=UFR 3-06 References|testcase=UFR 3-06 Test Case|evaluation=UFR 3-06 Evaluation|qualityreview=UFR 3-06 Quality Review|bestpr The study reported here has been published by D.P. Mikielewicz et al. in 2002 (1), it

...UFR 3-08 Description|references=UFR 3-08 References|testcase=UFR 3-08 Test Case|evaluation=UFR 3-08 Evaluation|qualityreview=UFR 3-08 Quality Review|bestpr = Test Case =

...UFR 1-02 Description|references=UFR 1-02 References|testcase=UFR 1-02 Test Case|evaluation=UFR 1-02 Evaluation|qualityreview=UFR 1-02 Quality Review|bestpr *BPA is based on a single computation of the chosen test case

''h/D''&nbsp;=&nbsp;2.5 case the mesh sizes Δ''z'' in vertical direction upper boundary. For the ''h/D''&nbsp;=&nbsp;5 case,

The test case is derived from testing of the M219 cavity model and formed part of a joint This test case from the M219 study, although simple in geometry, contains all the factors relevant to the mode

=='''Simulation Case CFD1'''== ...dimension. In this case the duct dimension used was 0.04m. No sensitivity study was carried on this parameter. From these parameters the values of the Reyn

...UFR 3-11 Description|references=UFR 3-11 References|testcase=UFR 3-11 Test Case|evaluation=UFR 3-11 Evaluation|qualityreview=UFR 3-11 Quality Review|bestpr = Test Case =

...calculations with the measurements the properties of the droplet phase for case 2 are considered. The profiles of the axial and radial mean velocities show ...low, one may obtain the droplet mass flow rate along the test section (for case 2 shown in Fig. 8 b). Comparing measurement and prediction for the normalis

The HiFi-TURB-DLR rounded step test case is a case in which a turbulent boundary layer flows over a flat plate before reaching ...ing a planar geometry are thoroughly discussed in [[UFR_3-36|UFR 3-36 Test Case]].

...UFR 1-05 Description|references=UFR 1-05 References|testcase=UFR 1-05 Test Case|evaluation=UFR 1-05 Evaluation|qualityreview=UFR 1-05 Quality Review|bestpr This has probably been the most important application of the study of jets in cross flow. The problem is to minimise the loss in lifting force

...UFR 4-13 Description|references=UFR 4-13 References|testcase=UFR 4-13 Test Case|evaluation=UFR 4-13 Evaluation|qualityreview=UFR 4-13 Quality Review|bestpr == Review of UFR studies and choice of test case ==

= Description of Study Test Case =

...ombinations of Mach number and incidences. A set of 4 conditions (named as case 1-4) have also oil flow pictures, boundary layer measurements, and skin fri Computations have been performed at QINETIQ for the case 1,2,3, and 4 by using the following turbulence models :

considered UFR. This makes it an attractive test case (TC) for an objective evaluation of summary of results of a systematic study of this TC with the use of enhanced hybrid RANS-LES

...UFR 4-11 Description|references=UFR 4-11 References|testcase=UFR 4-11 Test Case|evaluation=UFR 4-11 Evaluation|qualityreview=UFR 4-11 Quality Review|bestpr A discretisation scheme comparison was not carried out in this study; the second order ('self-filtered central differencing') SFCD scheme was us

The goal of the study on which this AC is based has been to understand and control The present test case primarily relates to the flow in water turbines.

...of the steel pressure vessel in magnox gas-cooled reactor systems. In this case, a downward-flowing wall jet of hot gas meets a slow upward flow of cool ga ...Velocimetry (PIV) and Laser Doppler Anemometry (LDA) systems were used to study the mean flow and turbulence fields. Laser light sheet flow visualisation a

...UFR 4-10 Description|references=UFR 4-10 References|testcase=UFR 4-10 Test Case|evaluation=UFR 4-10 Evaluation|qualityreview=UFR 4-10 Quality Review|bestpr = Test Case =

study of the flow in a three-dimensional diffuser conducted by == Review of UFR studies and choice of test case ==

In this UFR case, one large recirculation cell is present which fills almost the entire cubi ...to ensure the grid is providing (nearly) grid-independent results. In this case, the grid with 3,437,056 cells provided nearly grid-independent results.

...UFR 4-11 Description|references=UFR 4-11 References|testcase=UFR 4-11 Test Case|evaluation=UFR 4-11 Evaluation|qualityreview=UFR 4-11 Quality Review|bestpr = Test Case =

...UFR 3-07 Description|references=UFR 3-07 References|testcase=UFR 3-07 Test Case|evaluation=UFR 3-07 Evaluation|qualityreview=UFR 3-07 Quality Review|bestpr == Review of UFR studies and choice of test case ==

...UFR 1-01 Description|references=UFR 1-01 References|testcase=UFR 1-01 Test Case|evaluation=UFR 1-01 Evaluation|qualityreview=UFR 1-01 Quality Review|bestpr ...ds). The boundaries of what was the potential core in the above (subsonic) case are now characterised by the outer boundary of the shock cells, outside of

...UFR 3-06 Description|references=UFR 3-06 References|testcase=UFR 3-06 Test Case|evaluation=UFR 3-06 Evaluation|qualityreview=UFR 3-06 Quality Review|bestpr == Review of UFR studies and choice of test case ==

flexible splitter plate considered in the present study and the ...d grids either for the subset and for the full case are used. In the first case the entire grid consists of about 13.5 million control volumes (CVs). For t

...UFR 4-09 Description|references=UFR 4-09 References|testcase=UFR 4-09 Test Case|evaluation=UFR 4-09 Evaluation|qualityreview=UFR 4-09 Quality Review|bestpr == Review of UFR studies and choice of test case ==

...UFR 3-03 Description|references=UFR 3-03 References|testcase=UFR 3-03 Test Case|evaluation=UFR 3-03 Evaluation|qualityreview=UFR 3-03 Quality Review|bestpr Driver, D. M. and Johnston, J. P. (1990), &ldquo;Experimental study of a three-dimensional shear-driven turbulent boundary layer with streamwis

...UFR 4-02 Description|references=UFR 4-02 References|testcase=UFR 4-02 Test Case|evaluation=UFR 4-02 Evaluation|qualityreview=UFR 4-02 Quality Review|bestpr = Test Case =

...l. For grid details please refer to the previous section ("[[UFR 3-36 Test Case#CFD Methods|CFD Methods]]"). Otherwise, standard rules of grid generation a ...lmaras turbulence model ( the SA-neg variant) was applied. Results of this study are given in [[UFR_3-36_Test_Case#figure7|Fig. 7]]. Minor deviations (not v