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Keywords: Large Eddy Simulation
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Proceedings Papers

Proc. ASME. FEDSM2020, Volume 3: Computational Fluid Dynamics; Micro and Nano Fluid Dynamics, V003T05A035, July 13–15, 2020
Paper No: FEDSM2020-20088
... easy to implement on unstructured grids. It is developed to capture any discontinuities at shocks while it is able to capture broadband spatial and temporal variations in turbulent flows with minimal dissipation and dispersion. Large Eddy Simulation is performed on a compression corner at a Mach number...
Proceedings Papers

Proc. ASME. AJKFluids2019, Volume 2: Computational Fluid Dynamics, V002T02A058, July 28–August 1, 2019
Paper No: AJKFluids2019-5107
... reveal different mechanisms of turbulent fluctuations to increase or decrease NO productions. industrial combustor large eddy simulation flamelet approach partially premixed combustion LARGE EDDY SIMULATION OF TURBULENT COMBUSTION FLOWS IN A METHANE-HYDROGEN GASTURBINE COMBUSTOR AND NOX...
Proceedings Papers

Proc. ASME. AJKFluids2019, Volume 2: Computational Fluid Dynamics, V002T02A042, July 28–August 1, 2019
Paper No: AJKFluids2019-5360
... methods adopt large eddy simulation. Results show that the interface density gradient is not collinear with the pressure gradient due to the shock wave impact and the bubble pulsation, that is, the baroclinic effect is the main cause of the instability at the droplet interface. The mechanism of the radial...
Proceedings Papers

Proc. ASME. AJKFluids2019, Volume 3B: Fluid Applications and Systems, V03BT03A030, July 28–August 1, 2019
Paper No: AJKFluids2019-5205
... Abstract The flow structures of a submerged vortex that appears in a model pump sump were numerically investigated by performing large eddy simulation (LES) of a model vortex in a simplified computational model with a sufficiently fine grid that could resolve the vortex core. The simplified...
Proceedings Papers

Proc. ASME. AJKFluids2019, Volume 3B: Fluid Applications and Systems, V03BT03A055, July 28–August 1, 2019
Paper No: AJKFluids2019-4638
... Abstract We calculated fan performance and aerodynamic noise in the centrifugal fan of air conditioner by large eddy simulation (LES). In this study, we investigated simulation technology employing tetra-prism grids for practical usefulness. Tetraprism grids are easier to generate than...
Proceedings Papers

Proc. ASME. FEDSM2009, Volume 1: Symposia, Parts A, B and C, 407-416, August 2–6, 2009
Paper No: FEDSM2009-78416
... 30 07 2010 Large eddy simulation (LES) of internal flows of a mixed-flow pump is performed. The pump has 5 open impeller blades and twelve diffuser vanes. The objective of the present research is to verify the accuracy of the pump performance prediction by LES with a particular...
Proceedings Papers

Proc. ASME. FEDSM2007, Volume 1: Symposia, Parts A and B, 1385-1394, July 30–August 2, 2007
Paper No: FEDSM2007-37328
... 26 03 2009 Large Eddy Simulation (LES) technique is applied to investigate the Soot formation in a model cylindrical combustor. Gaseous propane (C 3 H 8 ) is injected through a circular nozzle attached at the centre of the combustor inlet and preheated air with temperature of 773K...
Proceedings Papers

Proc. ASME. FEDSM2007, Volume 1: Symposia, Parts A and B, 1395-1403, July 30–August 2, 2007
Paper No: FEDSM2007-37329
... 26 03 2009 Formation of nitric oxide (NO) in a model cylindrical combustor is investigated by applying Large Eddy Simulation (LES) technique. Gaseous propane (C 3 H 8 ) is injected through a circular nozzle attached at the centre of the combustor inlet and preheated air...
Proceedings Papers

Proc. ASME. FEDSM2007, Volume 1: Symposia, Parts A and B, 1419-1428, July 30–August 2, 2007
Paper No: FEDSM2007-37361
... 26 03 2009 Two models for large eddy simulation of turbulent reacting flow in homogeneous turbulence were studied. The sub-grid stress arising out of non-linearities of the Navier-Stokes equations were modeled using an explicit filtering approach. A filtered mass density function (FMDF...
Proceedings Papers

Proc. ASME. FEDSM2007, Volume 1: Symposia, Parts A and B, 823-831, July 30–August 2, 2007
Paper No: FEDSM2007-37059
... is that the Gaussian statistical distribution and local isotropic properties of turbulence SGS fluctuation can be parameterized by Germano’s (1991) Eulerian dynamic procedure. Using the present model, large eddy simulation (LES) was performed for downward channel flow at a Reynolds number of 180, as in the direct...
Proceedings Papers

Proc. ASME. FEDSM2007, Volume 1: Symposia, Parts A and B, 1283-1290, July 30–August 2, 2007
Paper No: FEDSM2007-37076
... 26 03 2009 The objective of this study is to specify the wall asymptotic behavior of the subgrid scale stress for the large eddy simulation (LES) of wall bounded turbulent flows. The grid scale (GS) and subgrid scale (SGS) turbulent statistics are extracted from the numerical data...
Proceedings Papers

Proc. ASME. FEDSM2007, Volume 1: Symposia, Parts A and B, 1339-1347, July 30–August 2, 2007
Paper No: FEDSM2007-37237
... 26 03 2009 The large eddy simulation of turbulent flow around a rectangular cylinder with side ratios of 1.0, 2.0, 2.67, and 3.0 at Re = 22000, is carried out using an overset grid system. In order to improve mass conservation along the boundary of computational domains, numerical...
Proceedings Papers

Proc. ASME. FEDSM2007, Volume 1: Symposia, Parts A and B, 183-190, July 30–August 2, 2007
Paper No: FEDSM2007-37145
... 26 03 2009 In this paper, unsteady flow and aerodynamic noise are numerically investigated for a half-open type propeller fan used for outdoor air conditioner components. The flow field is calculated by Front Flow/Blue, which is based on Large Eddy Simulation (LES). The Standard...
Proceedings Papers

Proc. ASME. FEDSM2002, Volume 1: Fora, Parts A and B, 559-564, July 14–18, 2002
Paper No: FEDSM2002-31264
... Subgrid-scale modeling, which characterizes Large Eddy Simulation (LES), has been used to predict the behavior of a water-fed hydrocyclone operating without an air core. The governing equations were solved by a fractional step method on a staggered grid. The Smagorinsky subgrid-scale model...
Proceedings Papers

Proc. ASME. HT-FED2004, Volume 3, 695-701, July 11–15, 2004
Paper No: HT-FED2004-56480
... Solid particle response to local gas velocity was discussed based on the simulation results of instantaneous velocities of three-dimensional backward-facing step gas particle turbulent flow. Gas flow was simulated by the method of large eddy simulation and particle motion was calculated...
Proceedings Papers

Proc. ASME. HT-FED2004, Volume 1, 283-287, July 11–15, 2004
Paper No: HT-FED2004-56281
... to the public for educational purposes. 03 03 2009 Immersed Boundary Method Geometry Independent Preprocessor Large Eddy Simulation momen object Cartesi immers employ present results. FORTR purpos Keywo Indepe INTRO A genera the go finite-v discret pressur numeri of rela Proceedings of HT...
Proceedings Papers

Proc. ASME. HT-FED2004, Volume 2, Parts A and B, 575-582, July 11–15, 2004
Paper No: HT-FED2004-56284
... Turbulent open-channel flow over a two-dimensional laboratory-scale dune is studied using large eddy simulation. Free surface motion is simulated using a level set method. Two subgrid scale models, namely dynamic Smagorinsky and dynamic two-parameter models, are employed. The present numerical...
Proceedings Papers

Proc. ASME. FEDSM2003, Volume 2: Symposia, Parts A, B, and C, 1117-1122, July 6–10, 2003
Paper No: FEDSM2003-45623
... in a uniform flow, was computed by the Large Eddy Simulation (LES) method at high Reynolds number of 2.2 × 10 4 . The Smagorinsky model was used as a subgrid scale (SGS) model. The main objectives of this work were to predict and estimate characteristics of flows around a free-oscillating cylinder. The present...
Proceedings Papers

Proc. ASME. FEDSM2003, Volume 2: Symposia, Parts A, B, and C, 1123-1128, July 6–10, 2003
Paper No: FEDSM2003-45624
... Three-dimensional numerical simulations of the flow around rectangular cylinders with depth-to-height ratios (side ratio) of 3 and 6 at various Reynolds numbers were carried out using the Large eddy simulation (LES), which employs the Smagorinsky eddy-viscosity model, a type of subgrid scale...
Proceedings Papers

Proc. ASME. FEDSM2006, Volume 1: Symposia, Parts A and B, 453-462, July 17–20, 2006
Paper No: FEDSM2006-98303
... by an one-way coupled analysis of the computation of the unsteady flow in the ducted fan and computation of the sound radiated to the ambient air. The former is performed by our original code, FrontFlow/blue, which is based on Large Eddy Simulation (LES). The latter is performed by using a commercial code...