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Showing papers in "Computers & Fluids in 1988"


Journal ArticleDOI
TL;DR: In this paper, a spectral forcing scheme is developed to obtain statistically stationary velocity fields in direct numerical simulations of homogeneous, isotropic turbulence, and the results show that the details of the forcing do not have a significant effect on the small-scale structure of the velocity fields.

679 citations


Journal ArticleDOI
TL;DR: In this paper, a detailed comparison of two finite-volume solution methods for two-dimensional incompressible fluid flows, one with staggered and the other with colocated numerical grids, is presented.

380 citations


Journal ArticleDOI
TL;DR: In this paper, a 3D MHD disturbance propagating through a steady inhomogeneous MHD flow is analyzed by a numerical model based on the Lax-Wendroff finite difference method.

92 citations


Journal ArticleDOI
TL;DR: In this paper, the effects of a partial magnetic field on the flow and heat transfer about a porous rotating disk were studied using modem quasi-Newton and globally convergent homotopy methods.

51 citations


Journal ArticleDOI
TL;DR: In this paper, an equal order velocity-pressure finite element procedure is presented for the calculation of 2D viscous, incompressible flows of a recirculating nature, where velocity and pressure are uncoupled and the equations are solved one after the other.

39 citations


Journal ArticleDOI
TL;DR: In this paper, the Kutta condition was used to predict the wake flow behind a normal or an inclined plate by a discrete-vortex method, which required that the strengths and locations of discrete vortices just shed from the edges be determined such that their presence in the flow field will offset the potential flow singularities at the edges of the plate.

35 citations



Journal ArticleDOI
TL;DR: In this paper, a velocity-pressure-integrated mixed-interpolation Galerkin finite-element computation of the Navier-Stokes equations using the grids is presented.

23 citations


Journal ArticleDOI
TL;DR: In this paper, the stability of the Taylor vortex flow is calculated using fifth order terms in amplitude, and numerical values are obtained with a Fortran program generated by a Macsyma program.

20 citations


Journal ArticleDOI
TL;DR: In this article, a methode spectrale multidomaine utilisant la technique de matrices d'influence is presented, which is appliquée a la resolution de l'equation d'Helmholtz et d'un probleme du type de Stokes dans un cas unidimensionnel.

20 citations


Journal ArticleDOI
TL;DR: In this article, an incremental multigrid method and an extrapolation procedure based on minimum residual concepts are proposed to accelerate the convergence rate of a robust block-line Gauss-Seidel solver for the vorticity-stream function Navier-Stokes equations.

Journal ArticleDOI
I. H. Parpia1
TL;DR: In this article, a numerical technique based on the theory of characteristics in multidimensional gasdynamics is developed, where the characteristic equations are recast into a form in which linear combinations of the gasdynamic variables are integrated along initially characteristic rays, and the solution is subsequently obtained by the inversion of a system of linear algebraic equations.

Journal ArticleDOI
Luis G. Reyna1, Stefan Menne
TL;DR: In this paper, it was shown that, for free vortices without external pressure gradient, the breakdown length is inversely proportional to the value of its gradient, and that the failure of the slender vortex equations corresponded to the critical condition as identified by Benjamin (1962) for inviscid flows.

Journal ArticleDOI
TL;DR: In this paper, a finite difference code was developed to simulate 2-D multiphase mixing, where the dynamics and inter-component heat transfer of a hot liquid poured into a pool of cold volatile liquid were modeled.

Journal ArticleDOI
TL;DR: In this article, the angular orientation between vorticity and velocity evolves from a state that is initially random to one in which there is a higher probability of vector alignment, reflecting changes of flow topology.

Journal ArticleDOI
TL;DR: In this article, an alternative numerical method is presented for solving the three-dimensional triple-deck equations for flows with strong viscous interaction, which is useful in computing 3-D nonlinear flows in which surface integral conditions such as those used in previous finite difference methods or the spectral method are not feasible.

Journal ArticleDOI
TL;DR: In this article, the development of flow due to a sphere which is impulsively started rotating about a diameter in a fluid initially at rest is studied numerically using two independent approaches.

Journal ArticleDOI
TL;DR: In this article, a pseudospectral method for the calculation of 2D flows of a viscous incompressible fluid in curvilinear domains is presented, where all the variables are expanded in double truncated series of Chebyshev polynomials and time integration is performed by an implicit finite differences scheme for both the advective and diffusive terms.

Journal ArticleDOI
TL;DR: In this article, a numerical method to solve a class of intego-differential equations asociated with multiphase flow problems is described, which has at least two time scales, a normal time and a long time.

Journal ArticleDOI
TL;DR: In this article, the authors considered the numerical solution of the strong conservative system of hyperbolic partial differential equations describing the unsteady motion of converging-diverging cylindrical shock waves in an inviscid nonheat conducting fluid.

Journal ArticleDOI
TL;DR: In this article, the Navier-Stokes equations have been formulated as an initial value problem by neglecting the effects of streamwise diffusion and treating the streamwise pressure gradient as a known source term.

Journal ArticleDOI
TL;DR: In this paper, a direct numerical simulation of a turbulent homogeneous field is used to study the decay of the concentration of a scalar quantity which is advected, diffused, and undergoes the effect of a sink term which models the effects of a chemical reaction.

Journal ArticleDOI
TL;DR: In this paper, a numerical scheme for solving the Navier-Stokes equations for axisymmetric flow in a Couette apparatus is presented, which is time-dependent and uses primitive variables with finite-differencing on a stretched, staggered grid.

Journal ArticleDOI
TL;DR: In this article, the Navier-Stokes equations of laminar incompressible flow over a forward-facing step on a semi-infinite flat plate are evaluated analytically and by means of sample computations.

Journal ArticleDOI
TL;DR: A technique for the generation of boundary-fitted curvilinear coordinate systems for the numerical solution of partial differential equations in two space dimensions based on the blending of shearing transformations is described.

Journal ArticleDOI
TL;DR: In this paper, numerical turbulent solutions of the compressible RNS equations are obtained by means of the global pressure relaxation procedure, which is conveniently represented by the streamwise pressure gradient term in a multi-pass boundary-layer-like marching technique.

Journal ArticleDOI
TL;DR: In this paper, the steady two-dimensional periodic motion of an incompressible fluid near an infinite array of moving walls is investigated by several numerical techniques which employ two main numerical formulations.

Journal ArticleDOI
TL;DR: In this paper, the Global Element Method is used to solve the steady parallel fully developed flow in ducts of various cross sections, including some singular cases, where pulsatile flow and a coupled problem combining heat and fluid flow are considered.

Journal ArticleDOI
TL;DR: In this paper, modified Thomas initial conditions are specified on a fixed spatial mesh d or on a random one d n (with average mesh spacing 〈 d n 〉).

Journal ArticleDOI
TL;DR: In this paper, the time oscillatory viscous flow past a semi-infinite flat plate is solved numerically using a Fourier decomposition in time, which avoids any difficulties associated with transient solutions, and an iterative line relaxation scheme is used to solve the truncated system.