Results 91 to 100 of about 69,667 (202)

Interaction effects between surface radiation and double-diffusive turbulent natural convection in an enclosed cavity filled with solid obstacles [PDF]

open access: yes, 2012
The work reported here is a 2D numerical study on the buoyancy-driven low speed flow of humid air inside a rectangular cavity partially filled with solid cylindrical objects and whose vertical walls are maintained at 1.2 and 21 oC.
Roger Penlington   +5 more
core   +1 more source

Experimental determination of natural convection heat transfer coefficients in an attic shaped enclosure

open access: yes, 2010
Heat transfer by natural convection in triangular enclosures is an area of significant importance in applications such as the design of greenhouses, attics and solar water heaters.
Carson, James K.   +2 more
core   +1 more source

Diffusion in Hypersonic Flows

open access: yes, 2020
In hypersonic flows, air goes into chemical reaction due to high temperature. Therefore, in addition to the Navier-Stokes Equations, chemical reaction equations need to be solved to analyze hypersonic flows.
Eyi, Sinan, Gür, Hilmi Berk
core  

Fast iterative solvers for PDE-constrained optimization problems

open access: yes, 2013
In this thesis, we develop preconditioned iterative methods for the solution of matrix systems arising from PDE-constrained optimization problems. In order to do this, we exploit saddle point theory, as this is the form of the matrix systems we wish to ...
Pearson, John W
core   +1 more source

An Inverse Problem for a Nonlinear Diffusion-Convection Equation

open access: yes, 2012
A method for constructing the Dirichlet-to-Neumann map for a nonlinear diffusion-convection equation is presented. The problem is reduced to the solution of a nonlinear integral equation in one independent variable.
DE LILLO, Silvana, BURINI, DILETTA
core   +1 more source

New Analytical Results and Numerical Schemes for Irregular Diffusion Processes

open access: yes, 2022
We examine the transient diffusion equation with time- and space-dependent diffusion coefficients in 1D. Such transport equations can be easily derived from the Fokker-Planck equation and are essential to understand the diffusion mechanisms in general, e.
Kovács, Endre   +3 more
core  

Large-scale adaptive mantle convection simulation

open access: yes
A new generation, parallel adaptive-mesh mantle convection code, Rhea, is described and benchmarked. Rhea targets large-scale mantle convection simulations on parallel computers, and thus has been developed with a strong focus on computational efficiency
Wilcox, Lucas C.   +6 more
core   +1 more source

Asymptotic stability of shock profiles for nonconvex convection-diffusion equation

open access: yes, 1997
The asymptotic stability of shock profiles is proved for a nonconvex convection-diffusion equation by using weighted energy estimates for the integrated equation.
Liu, Hailiang
core   +1 more source

NUMERICAL SOLUTION OF CONVECTION-DIFFUSION EQUATION BY CHEBYSHEV SPECTRAL METHOD VIA LIE GROUP METHOD

open access: yes
The numerical solution of convection-diffusion equation is presented by using Chebyshev spectral method based on El-Gendi method via Lie group analysis. Firstly, we apply Lie symmetry group analysis for the convection-diffusion equation.
Assabaai, M. A.
core   +1 more source

A CHARACTERISTIC-BASED FINITE VOLUME ELEMENT METHOD FOR CONVECTION-DIFFUSION-REACTION EQUATION

open access: yes, 2008
A two-dimensional convection-diffusion-reaction equation is discretized by the finite volume element method on triangular meshes. Time-dependent convection-diffusion-reaction equation is developed along the characteristic path using the characteristic ...
Sutthisak Phongthanapanich   +1 more
core   +1 more source

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