Results 1 to 10 of about 1,418 (68)

Mixed convective flow with variable viscosity and variable thermal conductivity in a channel in the presence of first order chemical reaction with heat generation or absorption

open access: yesJournal of Applied Mathematics and Computational Mechanics, 2021
A study has been made on the flow and heat transfer of a viscous fluid in a vertical channel with first order chemical reaction and heat generation or absorption assuming that the viscosity and thermal conductivity are dependent on the fluid temperature.
C. ShobhaK   +2 more
semanticscholar   +1 more source

Controllability to trajectories of a Ladyzhenskaya model for a viscous incompressible fluid

open access: yesComptes rendus. Mathematique, 2021
We consider the controllability of a viscous incompressible fluid modeled by the Navier–Stokes system with a nonlinear viscosity. To prove the controllability to trajectories, we linearize around a trajectory and the corresponding linear system includes ...
S. Guerrero, Takéo Takahashi
semanticscholar   +1 more source

Analysis and Numerical Simulation of Hyperbolic Shallow Water Moment Equations

open access: yesCommunications in Computational Physics, 2020
Shallow Water Moment Equations allow for vertical changes in the horizontal velocity, so that complex shallow flows can be described accurately. However, we show that these models lack global hyperbolicity and the loss of hyperbolicity already occurs for
Julian Rominger
semanticscholar   +1 more source

A priori Error Analysis of a Discontinuous Galerkin Method for Cahn–Hilliard–Navier–Stokes Equations

open access: yes, 2020
In this paper, we analyze an interior penalty discontinuous Galerkin method for solving the coupled Cahn–Hilliard and Navier–Stokes equations. We prove unconditional unique solvability of the discrete system, and we derive stability bounds without any ...
Chen Liu & Béatrice Rivière sci
semanticscholar   +1 more source

Existence of optimal boundary control for the Navier-Stokes equations with mixed boundary conditions [PDF]

open access: yes, 2015
Variational approaches have been used successfully as a strategy to take advantage from real data measurements. In several applications, this approach gives a means to increase the accuracy of numerical simulations.
Guerra, Telma   +2 more
core   +2 more sources

Enstrophy Dynamics of Stochastically Forced Large-Scale Geophysical Flows [PDF]

open access: yes, 2001
Enstrophy is an averaged measure of fluid vorticity. This quantity is particularly important in {\em rotating} geophysical flows. We investigate the dynamical evolution of enstrophy for large-scale quasi-geostrophic flows under random wind forcing.
Blömker, D., Duan, Jinqiao, Wanner, T.
core   +3 more sources

Numerical and analytical calculations of the free surface flow between two semi-infinite straights

open access: yesJournal of Applied Mathematics and Computational Mechanics, 2020
The problem of two-dimensional flow with the free surface of the jet in a region between two semi-infinite straights intersections at point O is calculated analytically for each angle Beta and numerically for each of the various values of the Weber ...
Fatma Zohra Chedala, A. Amara, M. Meflah
semanticscholar   +1 more source

A Single Cell‐Based Model of the Ductal Tumour Microarchitecture

open access: yesComputational and Mathematical Methods in Medicine, Volume 8, Issue 1, Page 51-69, 2007., 2007
The preinvasive intraductal tumours, such as the breast or prostate carcinomas, develop in many different architectural forms. There are, however, no experimental models explaining why cancer cells grow in these various configurations. We use a mathematical model to compare different proliferative conditions that can lead to such distinct ...
Katarzyna A. Rejniak, Robert H. Dillon
wiley   +1 more source

Stochastic 2-D Navier-Stokes Equation with Artificial Compressibility [PDF]

open access: yes, 2007
In this paper we study the stochastic Navier-Stokes equation with artificial compressibility. The main results of this work are the existence and uniqueness theorem for strong solutions and the limit to incompressible flow.
Manna, Utpal   +2 more
core   +3 more sources

Stagnation‐point flow of the Walters′ B′ fluid with slip

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2004, Issue 61, Page 3249-3258, 2004., 2004
The steady two‐dimensional stagnation point flow of a non‐Newtonian Walters′ B′ fluid with slip is studied. The fluid impinges on the wall either orthogonally or obliquely. A finite difference technique is employed to obtain solutions.
F. Labropulu, I. Husain, M. Chinichian
wiley   +1 more source

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