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Keywords: turbulence
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Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. October 2021, 88(10): 101001.
Paper No: JAM-21-1088
Published Online: May 24, 2021
... ′ ¯ / U 2 ) at the center height of the collection device. Large turbulent stresses occurred in the region of separation flows from the wooden frame for both 0 deg and 45 deg. This corresponds to the phenomenon that the turbulence intensity is greatest around the edge in the net structure [ 23...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. April 2021, 88(4): 041007.
Paper No: JAM-20-1600
Published Online: January 7, 2021
... by the Applied Mechanics Division of ASME for publication in the J ournal of A pplied M echanics . 10 11 2020 18 12 2020 18 12 2020 07 01 2021 postbuckled structures free vibration thin film viscoelasticity dynamics turbulence structures vibration Taking advantage...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. June 2020, 87(6): 061001.
Paper No: JAM-20-1014
Published Online: March 12, 2020
... [18] Zhu , Q. , and Yan , J. , 2019 , “ A Moving-Domain CFD Solver in Fenics With Applications to Tidal Turbine Simulations in Turbulent Flows ,” Comput. Math. Appl. in press. [19] Clarke , J. A. , Connor , G. , Grant , A. D. , and Johnstone , C. M. , 2007...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Appl. Mech. December 2014, 81(12): 121003.
Paper No: JAM-14-1346
Published Online: October 20, 2014
...Y. Bazilevs; J. Yan; M. de Stadler; S. Sarkar Fig. 14 Mean velocity streamlines on a planar cut. Top: uniform inflow. Bottom: turbulent inflow. Fig. 18 RMS of the velocity fluctuations in the sphere wake. Left: streamwise velocity fluctuations. Right: radial velocity fluctuations...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Appl. Mech. June 2014, 81(6): 061010.
Paper No: JAM-13-1423
Published Online: March 6, 2014
... turbulence closure models. Two part-load operating conditions with same head and different flow rates (91% and 70% of the best efficiency point (BEP) flow rate) are considered. Steady and unsteady simulations are carried out for axisymmetric and three-dimensional grid in a simplified axisymmetric geometry...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Appl. Mech. June 2014, 81(6): 061011.
Paper No: JAM-13-1424
Published Online: March 6, 2014
.... Furthermore, reduction (by about 1/3 in the case with 70% of BEP flow rate) of strong pressure fluctuations leads to reliable operation of the turbine. Hydraulics Internal flow Turbulence The flow in draft tube of a Francis turbine operating at partial load is a complex hydrodynamic phenomenon...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. September 2012, 79(5): 051014.
Published Online: June 29, 2012
... the asymmetrical flow and also detect the recirculation zones and the differences between the cases of the flow. 27 10 2010 11 03 2012 29 03 2012 28 06 2012 29 06 2012 turbulence large eddy simulation WALE eddy viscosity ORACLES configuration CFD Very common...
Journal Articles
Publisher: ASME
Article Type: Special Section: Computational Fluid Mechanics And Fluid–Structure Interaction
J. Appl. Mech. January 2012, 79(1): 010909.
Published Online: December 13, 2011
...-Uniform Rational B-splines) basis functions which have been proven to be highly accurate in LES of turbulent flows (Bazilevs, Y., et al. 2007, Comput. Methods Appl. Mech. Eng., 197 , pp. 173–201). LC consists of stream-wise vortices in the direction of the wind acting as a secondary flow structure...
Journal Articles
Publisher: ASME
Article Type: Special Section: Computational Fluid Mechanics And Fluid–Structure Interaction
J. Appl. Mech. January 2012, 79(1): 010910.
Published Online: December 13, 2011
...-rectifying turbine in the sense that it maintains the same direction of rotation as the airflow changes direction. The blades of the turbine are symmetrical, and here we consider straight and swept blades, both with constant chord. The turbulent flow physics involved in the complex, unsteady flow is governed...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. March 2010, 77(2): 021020.
Published Online: December 21, 2009
... with big space coherence. In the opposite, the results obtained with the fine pore plate show a flow close to a fully developed turbulent channel flow. The comparison of the aerodynamic field with computational simulations based on a Reynolds-averaged Navier-Stokes (RANS) model underlines the difficulties...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. November 2009, 76(6): 061005.
Published Online: July 23, 2009
... phase effects and using two-way coupling method, simulation accuracy noticeably has been improved. Three models, the k − ε model, the Reynolds stress model (RSM) without considering air core, and Reynolds stress turbulence model with volume of fluid multiphase model for simulating air core, were...
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Appl. Mech. July 2008, 75(4): 044501.
Published Online: May 13, 2008
...Rafik Absi The semitheoretical function of Nezu and Nakagawa (1993, Turbulence in Open-Channel Flows, A. A. Balkema, ed., Rotterdam, The Netherlands) for the turbulent kinetic energy k is valid only where local equilibrium is a good approximation. From an estimation of the difference between...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. March 2008, 75(2): 021019.
Published Online: February 27, 2008
..., surface pressure distributions, and streamline plots are calculated for circular, plane, and annular impinging jets. The models show excellent agreement with existing experimental results in both laminar and turbulent conditions and for different Reynolds numbers. Derivation . First, using Eq. 16...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Appl. Mech. May 2006, 73(3): 469–473.
Published Online: January 17, 2006
...L. G. Margolin; P. K. Smolarkiewicz; A. A. Wyszogradzki We describe a series of computational experiments that employ nonoscillatory finite volume methods to simulate the decay of high Reynolds number turbulence. These experiments cover a broad range of physical viscosities and numerical...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Appl. Mech. May 2006, 73(3): 368–373.
Published Online: November 10, 2005
... turbulence to SGS portion. Thus the procedure is applied to the production term in the transport equation of K SGS , while the eddy viscosity in the filtered equation of motion is determined indirectly through K SGS . The statistically derived model for K SGS equation is adopted for the basis of our...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Appl. Mech. May 2006, 73(3): 374–381.
Published Online: November 9, 2005
... against experiment for methane-air combustion in a coaxial geometry, and jet-A surrogate/air combustion in a gas-turbine combustor geometry. 15 12 2003 09 11 2005 flow simulation chemically reactive flow turbulence combustion flames heat transfer gas turbines Mach number jets...
Journal Articles
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Appl. Mech. May 2006, 73(3): 461–468.
Published Online: November 6, 2005
... and the spatial gradients of the flow field decrease in time. This late stage of Richtmyer-Meshkov mixing layers is studied from the viewpoint of self-similarity. Analogies with weakly anisotropic turbulence suggest that both the bubble-side and spike-side widths of the mixing layer should evolve as power-laws...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Appl. Mech. May 2006, 73(3): 397–404.
Published Online: November 4, 2005
... is modeled based on scaling laws. The resulting generalized two-equation turbulence model is validated for several benchmark turbulent flows with swirl and curvature. b ( b i j ) anisotropy of Reynolds stress tensor C , C * modeling coefficients C 1...