Results 91 to 100 of about 109,235 (268)

The Euler Equations on Thin Domains [PDF]

, 2000
For the Euler equations in a thin domain Q_ε = Ω×(0, ε), Ω a rectangle in R^2, with initial data in (W^(2,q)(Qε))^3, q > 3, bounded uniformly in ε, the classical solution is shown to exist on a time interval (0, T(ε)), where T(є) → +∞ as є → 0.
Marsden, Jerrold E., Ratiu, Tudor S., Raugel, Geneviève   +2 more
core  

Numerical Modeling of Tank Cars Carrying Hazardous Materials With and Without Composite Metal Foam

Advanced Engineering Materials, EarlyView.
Large‐scale puncture models consisting of hazardous materials (HAZMATs) tank car with protective steel–steel composite metal foam (S–S CMF) are solved numerically. Tank car plate with added 10.91–13.33 mm thick S–S CMF layer does not puncture. Protective S–S CMF absorbs impact energy, reduces plate deformation, and prevents shear bands formation ...
Aman Kaushik, Afsaneh Rabiei
wiley   +1 more source

Semi-analytical spectral methods in generalized curvilinear coordinates for analyzing sound fields in axisymmetric cavities

Mechanical Engineering Journal
This paper provides semi-analytical spectral methods for efficiently analyzing three-dimensional non-axisymmetric sound fields within axisymmetric cavities subject to arbitrary boundary conditions. By expanding the velocity potential using Fourier series
Yozo ARAKI, Toshiya SAMEJIMA
doaj   +1 more source

Controllability for a One-Dimensional Wave Equation in a Non-cylindrical Domain

Mediterranean Journal of Mathematics, 2019
This paper deals with the controllability for a one-dimensional wave equation with mixed boundary conditions in a non-cylindrical domain. This equation models small vibrations of a string where an endpoint is fixed and the other is moving. As usual, we consider one main control (the leader) and an additional secondary control (the follower).
openaire   +2 more sources

Impact of Pre‐Oxidation Treatments on a Recycled MgO/Steel‐Composite as Carbon Free Anode in Aluminum‐Electrolysis Environments

Advanced Engineering Materials, EarlyView.
Cermets (60 vol.% AISI 316L stainless steel, 40 vol.% recycled MgO), intended for use in aluminum electrolysis, were pre‐oxidized in three furnaces with different heating technologies and subjected to a cryolite corrosion test. The different atmospheres influenced the formation of oxide layers, which in turn affected corrosion resistance and ...
Patricia Kaiser, Felix Drechsler, Nora Brachhold, Florian Kerber, Christos G. Aneziris   +4 more
wiley   +1 more source

Quantifying Spatiotemporal Chaos in Rayleigh-B\'enard Convection

, 2012
Using large-scale parallel numerical simulations we explore spatiotemporal chaos in Rayleigh-B\'enard convection in a cylindrical domain with experimentally relevant boundary conditions.
A. Karimi, E. Ott, H. D. I. Abarbanel, M. R. Paul, P. Holmes   +4 more
core   +1 more source

The Initial Value Problem for the Equations of Magnetohydrodynamic Type in Non-Cylindrical Domain

Revista Matemática Complutense, 1995
Let \(r(t)\) be a positive-valued function of \(C^1[0, T]\), \[ Q= \{(x, t): x\in \mathbb{R}^n,\;0\leq t\leq T,\;(x)< r(t)\},\quad n= 2,3. \] The authors consider in domain \(Q\) the initial-boundary value problem \[ \begin{aligned} {\partial\overline u\over \partial t} & - {\eta\over \rho} \Delta\overline u+ (\overline u\cdot \nabla) \overline u- {\mu\
Rojas-Medar, M. A., Beltran-Barrios, R.
openaire   +3 more sources

Additive Manufacturing of Continuous Fibre Reinforced Composites: Process, Characterisation, Modelling, and Sustainability

Advanced Engineering Materials, EarlyView.
Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley   +1 more source

Accelerated black holes in an anti-de Sitter universe

, 2005
The C-metric is one of few known exact solutions of Einstein's field equations which describes the gravitational field of moving sources. For a vanishing or positive cosmological constant, the C-metric represents two accelerated black holes in ...
B. Carter, H. Weyl, J. Ehlers, Pavel Krtouš, R. Debever, T. Levi-Civita   +5 more
core   +1 more source

Affecting the Properties of Copper–Graphene Electroconductive Composite by Severe Plastic Deformation

Advanced Engineering Materials, EarlyView.
Copper‐based composites enhanced with carbon feature convenient mechanical properties and favorable electric conductivity. Processing via deformation and thermomechanical treatments can introduce advantageous microstructures further enhancing their performance. Herein, copper–graphene powder‐based composites are directly consolidated via rotary swaging
Radim Kocich, Lenka Kunčická, Pavel Czernek, Zifan Wang   +3 more
wiley   +1 more source