References of "Obeidat, Anas 50002774"
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See detailThree-dimensional remeshed smoothed particle hydrodynamics for the simulation of isotropic turbulence
Obeidat, Anas UL; Bordas, Stéphane UL

in International Journal for Numerical Methods in Fluids (2017)

We present a remeshed particle-mesh method for the simulation of three-dimensional compressible turbulent flow. The method is related to the mesh free smoothed particle hydrodynamic (SPH) method, but the ... [more ▼]

We present a remeshed particle-mesh method for the simulation of three-dimensional compressible turbulent flow. The method is related to the mesh free smoothed particle hydrodynamic (SPH) method, but the present method introduces a mesh for efficient calculation of the pressure gradient, and laminar and turbulent diffusion. In addition, the mesh is used to remesh (reorganise uniformly) the particles to ensure a regular particle distribution and convergence of the method. The accuracy of the presented methodology is tested for a number of benchmark problems involving two- and three-dimensional Taylor-Green flow, thin double shear layer, and three-dimensional isotropic turbulence. Two models were implemented, direct numerical simulations, and Smagorinsky model. Taking advantage of the Lagrangian advection, and the finite difference efficiency, the method is capable of providing quality simulations while maintaining its robustness and versatility [less ▲]

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See detailThree-dimensional remeshed smoothed particle hydrodynamics for the simulation of isotropic turbulence
Obeidat, Anas UL; Bordas, Stéphane UL

in INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS (2017)

We present a remeshed particle-mesh method for the simulation of three-dimensional compressible turbulent flow. The method is related to the mesh free smoothed particle hydrodynamic (SPH) method, but the ... [more ▼]

We present a remeshed particle-mesh method for the simulation of three-dimensional compressible turbulent flow. The method is related to the mesh free smoothed particle hydrodynamic (SPH) method, but the present method introduces a mesh for efficient calculation of the pressure gradient, and laminar and turbulent diffusion. In addition, the mesh is used to remesh (reorganise uniformly) the particles to ensure a regular particle distribution and convergence of the method. The accuracy of the presented methodology is tested for a number of benchmark problems involving two- and three-dimensional Taylor-Green flow, thin double shear layer, and three-dimensional isotropic turbulence. Two models were implemented, direct numerical simulations, and Smagorinsky model. Taking advantage of the Lagrangian advection, and the finite difference efficiency, the method is capable of providing quality simulations while maintaining its robustness and versatility [less ▲]

Detailed reference viewed: 226 (31 UL)
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See detailA Three-Dimensional Remeshed Hybrid Smooth Particle-mesh Method
Obeidat, Anas UL

Scientific Conference (2016, June 10)

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See detailLarge Eddy Simulations of the Influence of Piston Position on the Swirling Flow in a Model Two-Stroke Diesel Engine
Obeidat, Anas UL; Schnipper, Teis; Ingorsen, Kristian M. et al

in International Journal of Numerical Methods for Heat & Fluid Flow (2014), 24(2), 325-241

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See detailPIV study of the effect of piston position on the in-cylinder swirling flow during the scavenging process in large two-stroke marine diesel engines
Haider, Sajjad; Schnipper, T.; Obeidat, Anas UL et al

in Journal of Marine Science & Technology (2013), 18(1), 133-143

A simplified model of a low speed large two- stroke marine diesel engine cylinder is developed. The effect of piston position on the in-cylinder swirling flow during the scavenging process is studied ... [more ▼]

A simplified model of a low speed large two- stroke marine diesel engine cylinder is developed. The effect of piston position on the in-cylinder swirling flow during the scavenging process is studied using the stereo- scopic particle image velocimetry technique. The mea- surements are conducted at different cross-sectional planes along the cylinder length and at piston positions covering the air intake port by 0, 25, 50 and 75 %. When the intake port is fully open, the tangential velocity profile is similar to a Burgers vortex, whereas the axial velocity has a wake- like profile. Due to internal wall friction, the swirl decays downstream, and the size of the vortex core increases. For increasing port closures, the tangential velocity profile changes from a Burgers vortex to a forced vortex, and the axial velocity changes correspondingly from a wake-like profile to a jet-like profile. For piston position with 75 % intake port closure, the jet-like axial velocity profile at a cross-sectional plane close to the intake port changes back to a wake-like profile at the adjacent downstream cross-sectional plane. This is characteristic of a vortex breakdown. The non-dimensional velocity profiles show no significant variation with the variation in Reynolds number. [less ▲]

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See detailInfluence of piston position on the scavenging and swirling flow in two-stroke Diesel engines
Obeidat, Anas UL; Haider, S.; Meyer, K.E. et al

in EUROMECH Colloquium 525 - Instabilities and transition in three-dimensional flows with rotation (2011, June 21)

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See detailINFLUENCE OF PISTON DISPLACEMENT ON THE SCAVENGING AND SWIRLING FLOW IN TWO-STROKE DIESEL ENGINES
Obeidat, Anas UL; Haider, Sajjad; Ingvorsen, K.M. et al

in 23rd Nordic Seminar on Computational Mechanics NSCM-23 (2010)

Detailed reference viewed: 33 (3 UL)