Search results

= 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 ==

This Template is used for generating a UFR Test Case page. Use substitution not transclusion for embedding it = Test Case Study =

test case comparisons of experimental measurements with CFD results. Identify your chosen study (or studies) on which the document will

= Review of Experimental Studies and choice of test case = ...view of past experimental studies of this test case . Identify your chosen study and

===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>

= Description of Study Test Case = * Convey the general set-up of the test case configuration (e.g. airflow over a bump on the floor of a wind tunnel)

...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

The Reynolds number is an important parameter already in the long-cylinder case; the further important parameters in the finite-height case. A variety of experiments have been

...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

...UFR 3-30 Description|references=UFR 3-30 References|testcase=UFR 3-30 Test Case|evaluation=UFR 3-30 Evaluation|qualityreview=UFR 3-30 Quality Review|bestpr ...s geometry has been used for various studies and has served as a benchmark case in different research groups. The flow features phenomena such as separatio

...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

...wall. In addition to its interest for the complex underlying physics, this case is close to several industrial configurations found in internal cooling of ...al. (2004, 2005, 2006, 2007), carried out a fairly extensive experimental study for a particular configuration: the incompressible flow through a confined

...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 =

...ulty to predict the flow with standard turbulence models, ...). Detail any case-specific data that needs to be generated. the configuration chosen for the present study and position it with respect to previous studies.

...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

case for fluid-structure interaction as a growing branch of research in science and industry. Similar to the previous case [http://qnet-ercoftac.cfms.org.uk/w/index.php/UFR_2-13_Description UFR 2-13

The DOAPs may not be well predicted in the AC study because the UFR-BPA, ...of streamline curvature, Grashof number etc.), or perhaps the UFR test case features several interacting flow regimes of which only one is relevant

...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).

This test case concerns the dynamics of nonreactive and reactive bluff-body wake flows. Th ...ulence levels in the reacting flow are much lower than in the non-reacting case, particularly in the vicinity of the recirculation zone, which can be expla

...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

...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 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

...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 =

...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 ...for Rotor 37 is flawed due to a hub leakage, Rotor 67 was chosen for this study. Transonic, three-dimensional flows represent severe challenges for any num

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 =

...UFR 2-02 Description|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.

...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

...able, also provide the spectral analysis curves (von Neumann analysis). In case LES is ...estimation of the grid resolution. Finally, provide the grids used for the study.

...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

...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

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.

This test case concerns flow unsteadiness generated in a swirl apparatus which was investi A series of numerical simulations undertaken to study the highly swirling turbulent

...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 =

...inflow condition can be found at the end of the [[UFR 3-35 Test Case|Test Case Studies]] section of this document, too.

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 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/

...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 3-04 Description|references=UFR 3-04 References|testcase=UFR 3-04 Test Case|evaluation=UFR 3-04 Evaluation|qualityreview=UFR 3-04 Quality Review|bestpr ...the Tollmien-Schlichting waves. This is a common mode of transition in the case of turbomachinery flows.

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

...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 =

...UFR 1-06 Description|references=UFR 1-06 References|testcase=UFR 1-06 Test Case|evaluation=UFR 1-06 Evaluation|qualityreview=UFR 1-06 Quality Review|bestpr ...riments and CFD studies of fully-developed axisymmetric plumes. The recent study by Van Maele & Merci&nbsp;[[UFR_1-06_References|[2]]] , which is considered

...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 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 Developing flow in curved ducts of "large" aspect ratio has been measured to study the effect of convex or concave curvature on a nominally two-dimensional tu

...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

...ting, ventilation and cooling systems that can be applied. In the specific case described here the system injects cooler air through diffusers mounted in t ...g. This approach leads to temperature stratification within the space. The case chosen for this application challenge is challenging because it is a combin

...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,