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Showing papers in "Computers & Fluids in 2013"


Journal ArticleDOI
TL;DR: In this article, the boundary layer flow and heat transfer over a permeable stretching sheet due to a nanofluid with the effects of magnetic field, slip boundary condition and thermal radiation have been investigated.

290 citations


Journal ArticleDOI
TL;DR: In this article, the problem of double stratification on boundary layer flow and heat transfer induced due to a nanofluid over a vertical plate is investigated, which includes the effect of Brownian motion, thermophoresis, thermal stratification and solutal stratification parameters.

211 citations


Journal ArticleDOI
TL;DR: In this article, an extensive analysis of the performance of the volume of fluid (VOF) method, as implemented in OpenFOAM, in modeling the flow of confined bubbles and droplets (segmented flows) in microfluidics is provided.

190 citations


Journal ArticleDOI
TL;DR: In this paper, a simple and effective scheme for Dynamic Stabilization of MPS method is presented, which reproduces meticulously adequate repulsive forces to attenuate the interparticle penetration and thus stabilizes the calculations, even for highly deformed flows characterized by tensile stress states.

156 citations


Journal ArticleDOI
TL;DR: In this paper, the effect of the vortex finder dimensions (both the diameter and length) on the performance and flow field pattern in nine cyclone separators has been investigated computationally using the large eddy simulation (LES).

152 citations


Journal ArticleDOI
TL;DR: In this paper, a two-body floating-point absorber (FPA) was used to generate energy from the relative motion between the two bodies in a wave energy conversion system.

146 citations


Journal ArticleDOI
TL;DR: In this paper, the wind flow around an isolated high-rise building with aspect ratio 1:1:2 was modeled using the Large-Eddy Simulation (LES) approach.

138 citations


Journal ArticleDOI
TL;DR: In this paper, the authors investigated the entropy generation and enhancement of heat transfer in natural convection flow and heat transfer using Copper (Cu)-water nanofluid in the presence of a constant magnetic field.

132 citations


Journal ArticleDOI
TL;DR: In this article, the authors used the eddy viscosity model of Spalart and Allmaras (1994) and the DES approach [2] to analyze the flow past a rotating marine propeller with the aim of establishing limits and capabilities and hence the field of applicability of different turbulence modeling approaches for this class of problems.

129 citations


Journal ArticleDOI
TL;DR: In this paper, the aerodynamic drag of two drafting cyclists in upright position (UP), dropped position (DP) and time-trial position (TTP) was analyzed by Computational Fluid Dynamics (CFD) simulations supported by wind-tunnel measurements.

121 citations


Journal ArticleDOI
TL;DR: In this paper, a divergence-free method was developed with incompressible flow solvers to reduce the artificial fluctuations in direct numerical and large-eddy simulations, and the results showed that the impact of the modified solvers on solution accuracy is small.

Journal ArticleDOI
TL;DR: In this work a fluid–structure interaction solver is developed in a partitioned approach using block Gauss–Seidel implicit scheme and detects accurately the interaction between the complex flow structures generated by the flaps and the effect of the flapping oscillations between each other.

Journal ArticleDOI
TL;DR: In this article, a spatially and temporally second-order cell-centered Lagrangian formulation (CCH) was proposed for elasto-plastic materials on unstructured polyhedral cells in multiple dimensions.

Journal ArticleDOI
TL;DR: A global optimization method based on the Artificial Neural Networks and Artificial Bee Colony algorithm has been used along with a validated 3D Navier–Stokes flow solver to redesign the impeller geometry and improve the performance of a Berkeh 32-160 centrifugal pump.

Journal ArticleDOI
TL;DR: In this article, a cell-centered finite volume method was developed to solve the governing equations of a two-phase homogeneous fluid, in which isentropic and isothermal equations of state were used to relate densities and pressure, in lieu of solving an energy equation.

Journal ArticleDOI
TL;DR: In this paper, a new weighted compact nonlinear scheme (WCNS) is presented, where the linear difference scheme is modified to use the flux on the computational nodes together with that on the midpoints.

Journal ArticleDOI
TL;DR: In this paper, the stable XFEM was used to solve a 3D free-surface flow benchmark problem and a classical two-phase flow problem, and two recommended settings were finally used for solving the two flow problems.

Journal ArticleDOI
TL;DR: A comparative analysis of recent simulations, conducted in the framework of a French-German collaboration on LES of Complex Flows, for the so-called Ahmed body at Reynolds number 768000 and slant angle 25° provides a juxtaposition of results obtained with different eddy-resolving modeling approaches.

Journal ArticleDOI
TL;DR: In this article, an improved two-dimensional Incompressible Smoothed Particle Hydrodynamics (ISPH) model is developed to simulate free surface flow interaction with structures.

Journal ArticleDOI
TL;DR: Turbent separated planar bluff-body flows were numerically analyzed using the state-of-the-art OpenFOAM and ANSYS FLUENT technologies, based on the conventional URANS approach and demonstrated minimum deviations between OpenFOam and FLUent and agreed fairly well with the experimental data and other numerical solutions.

Journal ArticleDOI
TL;DR: A computational methodology is proposed for CFD-based aerodynamic design to exploit a reduced order model as surrogate evaluator and a zonal approach is presented to better solve the shock wave region and improve the surrogate prediction in transonic flow.

Journal ArticleDOI
TL;DR: In this article, a lattice Boltzmann method with local hierarchical adaptive grid refinement using a cell-centered lattice structure is presented which satisfies the requirements of high accuracy and high efficiency.

Journal ArticleDOI
TL;DR: A condensed version of the material from [1] , concentrating on the flapping-motion modeling and computations, and also a temporal-order study from [2] .

Journal ArticleDOI
TL;DR: In this article, the heat transfer effects in magnetohydrodynamic (MHD) axisymmetric flow of third-grade fluid between the stretching sheets are given due attention, and the resulting nonlinear problem is computed for velocity and temperature fields.

Journal ArticleDOI
TL;DR: In this article, axisymmetric Smoothed Particle Hydrodynamics (SPHs) numerical model was established combined with Boundary Element Method (BEM) to simulate the whole process of underwater explosion detonated by column charge in this paper.

Journal ArticleDOI
TL;DR: In this article, the authors explored the reasons for the non-physical behavior, checkerboard and global cut-off problems of the preconditioned and all-speed Roe-type schemes.

Journal ArticleDOI
TL;DR: In this paper, a marine propeller working in oblique flow conditions is numerically simulated by the unsteady Reynolds averaged Navier-Stokes equations (uRaNSe) and a dynamically overlapping grid approach.

Journal ArticleDOI
TL;DR: A second-order accurate Godunov-type MUSCL-Hancock scheme is used with an HLLC Riemann solver to create a robust framework suitable for different types of flood simulation, showing good agreement with a post-event survey.

Journal ArticleDOI
TL;DR: In this article, a new high-resolution code for the direct numerical simulation of a zero pressure gradient turbulent boundary layers over a flat plate has been developed, which is used to simulate a wide range of Reynolds numbers from Reθ = 300 to 6800.

Journal ArticleDOI
TL;DR: In this paper, the authors implemented pressure-driven, implicit boundary conditions in an open source direct simulation Monte Carlo (DSMC) solver, and benchmarked against simple micro-channel flow cases found in the literature.