Results 11 to 20 of about 225 (176)

Review of the tetrapod skull-neck boundary: implications for the evolution of the atlas-axis complex. [PDF]

Biol Rev Camb Philos Soc
ABSTRACT This review describes variation in modern and fossil occiput–atlas–axis complex anatomy of total group Tetrapoda with the aim of documenting the range of structural variation throughout their evolutionary history to establish grounds for comparison of the complex between tetrapod clades.
Korneisel DE, Maddin HC.
europepmc   +2 more sources

A Numerical-Experimental Assessment of the Dilute Phase and Erosion in a Larvae-Killing Processing System: Considering the Geometry Variation. [PDF]

Food Sci Nutr
The Reynolds stress (RSM) and Discrete phase models (DPM) were used to model the conveying of wheat in the dilute phase. The contours related to the velocity magnitude, static pressure, dynamic pressure, erosion, vorticity magnitude, and turbulence intensity were investigated in four different cross‐section ratios.
Ebadi A, Fanaei AR, Hassanpour A, Rostampour V.   +3 more
europepmc   +2 more sources

A Uniformly Convergent Collocation Method for Singularly Perturbed Delay Parabolic Reaction-Diffusion Problem

Abstract and Applied Analysis, 2021
In this article, a numerical solution is proposed for singularly perturbed delay parabolic reaction-diffusion problem with mixed-type boundary conditions.
Fasika Wondimu Gelu, Gemechis File Duressa   +1 more
doaj   +1 more source

On parameter uniform and layer resolving numerical method for a singularly perturbed model in aerodynamics

Results in Control and Optimization, 2023
In this paper, a parameter uniform computational technique is examined for a partially singularly perturbed semi-linear system of equations which models the flight dynamics of an Unmanned Aerial Vehicle (UAV) and a Helicopter.
K. Saravana Sankar, L. Jones Tarcius Doss   +1 more
doaj   +1 more source

Supercloseness of the SDFEM on Shishkin triangular meshes for problems with exponential layers [PDF]

Advances in Computational Mathematics, 2016
In this paper, we analyze the supercloseness property of the streamline diffusion finite element method (SDFEM) on Shishkin triangular meshes, which is different from one in the case of rectangular meshes. The analysis depends on integral inequalities for the part related to the diffusion in the bilinear form.
Jin Zhang 0004, Xiaowei Liu 0002
openaire   +3 more sources

Parameter uniform numerical method for fourth order singularly perturbed turning point problems exhibiting boundary layers

Ain Shams Engineering Journal, 2018
In this paper, a numerical method based on Shishkin mesh for a singularly perturbed fourth order differential equation with a turning point exhibiting boundary layers is presented. In this method the problem is transformed into a weakly coupled system of
N. Geetha, A. Tamilselvan
doaj   +1 more source

A Parameter Uniform Numerical Scheme for Singularly Perturbed Differential-difference Equations with Mixed Shifts [PDF]

Journal of Applied and Computational Mechanics, 2020
In this paper, we consider a second-order singularly perturbed differential-difference equations with mixed delay and advance parameters. At first, we approximate the model problem by an upwind finite difference scheme on a Shishkin mesh.
P. Mushahary, S. R. Sahu, J. Mohapatra
doaj   +1 more source

Fitted mesh method for a weakly coupled system of singularly perturbed reaction–convection–diffusion problems with discontinuous source term

Ain Shams Engineering Journal, 2018
In this article, a parameter-uniform numerical method for a weakly coupled system of singularly perturbed reaction–convection–diffusion problems with discontinuous source term containing two small parameters multiplied to the highest and second highest ...
Pathan Mahabub Basha, Vembu Shanthi
doaj   +1 more source

Numerical Scheme for Singularly Perturbed Mixed Delay Differential Equation on Shishkin Type Meshes

Fractal and Fractional, 2022
Two non-uniform meshes used as part of the finite difference method to resolve singularly perturbed mixed-delay differential equations are studied in this article.
Sekar Elango, Bundit Unyong
doaj   +1 more source

A note on a generalized Shishkin-type mesh

Novi Sad Journal of Mathematics, 2018
Summary: The one-dimensional linear singularly perturbed convection-diffusion problem is discretized using the upwind scheme on a mesh which is a mild generalization of Shishkin-type meshes. The generalized mesh uses the transition point of the Shishkin mesh, but it does not require any structure of its fine and course parts. Convergence uniform in the
Nhan, Thái Ahn, Vulanović, Relja
openaire   +2 more sources