...-resolving simulations using spectral element numerical methods. computational fluid dynamics spectral element method turbulence large-eddy simulation wall functions Proceedings of the ASME 2022 Fluids Engineering Division Summer Meeting FEDSM2022 August 3-5, 2022, Toronto, Ontario, Canada...

... is introduced and then expelled through slot jets on the pressure side of the airfoils. Entrainment processes develop in the system through high momentum fluid introduction into a sedentary secondary fluid. Entrainment is governed by pressure gradients and turbulent mixing and so turbulent quantities...

...ADAPTIVE SIMULATION BASED ON URANS AND ENSEMBLE KALMAN FILTER FOR RESOLVING TURBULENT FLOW ON LES Sasuga Ito1 Kyushu University 755, Motooka, Nishi-ku, Fukuoka Japan Masato Furukawa Kyushu University 755, Motooka, Nishi-ku, Fukuoka Japan Yamada Kazutoyo Iwate University 4-3-5, Ueda, Morioka, Iwate...

... in terms of Nusselt number, Nu , normalized by the unperturbed reference Nu 0 . The shortest, 25.4 mm high flexible strip resulted in the highest peak and overall heat transfer enhancement. The distribution of the local heat transfer enhancement is found to correlate well with the turbulent flow motion...

...Abstract Abstract We tested Artificial Neural Networks (ANNs) to predict a fully-developed turbulent channel flow of a viscoelastic fluid in preparation for elucidating flow phenomenon and solving the difficulty in DNS (Direct Numerical Simulation) due to numerical instability...

...Abstract Abstract Recent developments in wind turbine design research account for the effects of velocity fluctuation and the characteristic turbulence of the installation location site to improve performance. For the design, a low-cost natural wind generator and a laboratory-based performance...

... presents data on mean velocity and void ratio field, statistical turbulent quantities in three different cavitation levels with the same reference velocity. A type of cavitation associated with a weak but persistent re-entrant jet is described. The comparison between the cavitation and the noncavitating...

... alternatives to construct an artificial bed appropriate to duplicate, in laboratory, the conditions relevant to marine sediment erosion. The main goal of the study is to find a simulated bed that approaches the behavior of natural sediments, based on the velocity and turbulence profiles and on the interface...

... in an inclined channel with cold walls under turbulent flow regime was studied. The cases that the flow is downward and upward, and when the flow is warmer than the walls were analyzed. The V2F turbulence model was used in the computational model so that the intensity of the turbulence velocity fluctuations...

... The Immersed-Boundary Method is coupled to an incompressible-flow RANS solver, based on a two-equation turbulence model, to perform unsteady numerical simulations of airflow past the NACA-0012 airfoil for several angles of attack and Reynolds numbers of 5.0×10 5 and 1.8×10 6 . Qualitative...

... The Scale Adaptive Simulation (SAS) models can keep standard RANS capabilities in stable flow regions but resolve turbulent structures in unsteady regions of flow field like LES. This RANS/LES property of SAS model relies on the v. Karman length-scale as a scale determining variable, which...

... airways were analyzed. The results were compared with experimental measurements, and carcinogenicity of these fibers was discussed. Asbestos elongated mineral particles (EMP) fiber transport deposition tracheobronchial tree numerical simulation airway bifurcation model turbulence...

... and turbulence intensity distributions are found to be axisymmetric due to the geometry of the combustor. The variation in pressure and velocity with locations and Reynolds number was studied. The velocity variation near the surface of the combustor (r/R = 0.66) was showing the opposite behaviour upto x/h...

... OF FLUID FLOW IN PEBBLE BED MODULAR REACTOR USING DIFFERENT TURBULENCE MODELS Akshay Gandhir Department of Mechanical Engineering Texas A&M University College Station, Texas 77840 Email: akshaygandhir@neo.tamu.edu Dr. Yassin Hassan Department of Nuclear Engineering Texas A&M University College Station...

... 30 07 2010 Direct numerical simulations of particle-laden homogeneous isotropic turbulence are performed to characterize the collision rate as a function of different particle properties. The fluid behaviour is computed using a three-dimensional Lattice Boltzmann Method including...

... was choked by a needle valve to investigate the effect of elevated chamber pressure on the flow field of the combustor. The variation in wall pressure and velocity at different locations and Reynolds number was studied. It was observed that the turbulent intensity increased with the swirling flow...

... of obstruction in the direction of the flow(s) are proposed to achieve optimal performance of the air curtain. Experiment Simulation Air Cabinet Velocity Turbulence Infiltration Rate Proceedings of the 2009 Summer Meeting of the ASME Fluids Engineering Division August 2 5, 2009, Vail, Colorado USA...

... details are discussed. Cyclone separator pressure drop turbulence Reynolds stress model granular mixture model entropy generation 1 Copyright © 2009 by ASME Proceedings of FEDSM2009 ASME 2009 Fluids Engineering Division Summer Meeting August 2-5, 2009, Vail, Colorado USA FEDSM2009-78146 CFD...

... on the mesh spacing. In many situations, this can be overcome by simply refining the mesh, so that the wavelength of the structures becomes much larger than the mesh spacing, and the discretization errors become again negligible. However, in some other cases, like in Large-Eddy Simulations of highly turbulent...

... 10 07 2009 In this paper an effective numerical technique is presented to model turbulent motion of a standing surface wave in a tank. The equations of motion for turbulent boundary layers at the solid surfaces are coupled with the potential flow in the bulk of the fluid, and a mixed...