Results 51 to 60 of about 52,350 (200)

Rib‐Reinforced Ultralight and Ultra‐Strong Shell Lattices

open access: yesAdvanced Science, EarlyView.
This study thoroughly reveals the relation between the curvature and stress direction of triply periodic minimal surface (TPMS) thin shell lattices and proposes a novel rib reinforcement design strategy to incorporate ribs along the line of asymptotes (LOA) and the line of principal curvatures (LOC) to enhance the strength of ultralight TPMS shell ...
Winston Wai Shing Ma   +6 more
wiley   +1 more source

Initial boundary value problems for some damped nonlinear conservation laws

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2015
In this paper, we study the non-negative solutions of initial boundary value problems for some damped nonlinear conservation laws on the half line modelled by first order nonlinear hyperbolic PDEs.
Manoj Yadav
doaj   +1 more source

Partial Observability and its Consistency for PDEs [PDF]

open access: yes, 2013
In this paper, a quantitative measure of partial observability is defined for PDEs. The quantity is proved to be consistent if the PDE is approximated using well-posed approximation schemes.
Giraldo, Francis X.   +2 more
core   +1 more source

Partially integrable systems in multidimensions by a variant of the dressing method. 1

open access: yes, 2006
In this paper we construct nonlinear partial differential equations in more than 3 independent variables, possessing a manifold of analytic solutions with high, but not full, dimensionality. For this reason we call them ``partially integrable''.
A I Zenchuk   +16 more
core   +1 more source

Transient modeling of extraction columns: Parameter estimation, uncertainty analysis, and operation optimization

open access: yesAIChE Journal, EarlyView.
Abstract Despite extensive modeling efforts in extraction research, transient column models are rarely applied in industry due to concerns regarding parameter identifiability and model reliability. To address this, we analyzed uncertainty propagation from estimated parameters in a previously introduced column model and assessed identifiability via ill ...
Andreas Palmtag   +2 more
wiley   +1 more source

On a Modified Form of Navier-Stokes Equations for Three-Dimensional Flows

open access: yesThe Scientific World Journal, 2015
A rephrased form of Navier-Stokes equations is performed for incompressible, three-dimensional, unsteady flows according to Eulerian formalism for the fluid motion. In particular, we propose a geometrical method for the elimination of the nonlinear terms
J. Venetis
doaj   +1 more source

Irreversibility characterization in nanoliquid flow with velocity slip and dissipation by a stretchable cylinder

open access: yesAlexandria Engineering Journal, 2021
Here we scrutinize magnetohydrodynamic mixed convection flow of viscous nanoliquid by a stretching cylinder. Heat flux, Joule heating and dissipation effect are examined in heat equation.
T. Hayat, Sohail A. Khan, A. Alsaedi
doaj   +1 more source

Approximate Ad Hoc Parametric Solutions for Nonlinear First‐Order PDEs Governing Two‐Dimensional Steady Vector Fields [PDF]

open access: yesMathematical Problems in Engineering, 2010
Through a suitable ad hoc assumption, a nonlinear PDE governing a three‐dimensional weak, irrotational, steady vector field is reduced to a system of two nonlinear ODEs: the first of which corresponds to the two‐dimensional case, while the second involves also the third field component. By using several analytical tools as well as linear approximations
openaire   +2 more sources

Control of Dissipative Heat on the MHD Casson Fluid With the Interaction of Velocity Slip and Convective Condition Over a Stagnation Point

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT The growing need for enhanced thermal regulation is vital in recent advancements such as biomedical engineering, polymer processing, etc. In particular, the non‐Newtonian fluid likely Casson fluid with yield stress is used in these areas because of its ability to prepare biofluids and industrial suspensions effectively.
Bhagyabati Behuria   +2 more
wiley   +1 more source

Derivative-Free Kurchatov-Type Accelerating Iterative Method for Solving Nonlinear Systems: Dynamics and Applications

open access: yesFractal and Fractional, 2022
Two novel Kurchatov-type first-order divided difference operators were designed, which were used for constructing the variable parameter of three derivative-free iterative methods. The convergence orders of the new derivative-free methods are 3, (5+17)/2≈
Xiaofeng Wang, Xiaohe Chen
doaj   +1 more source

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