نتایج جستجو برای: parabolic heat equations

تعداد نتایج: 444849  

Journal: :SIAM J. Numerical Analysis 2000
Kenneth Hvistendahl Karlsen Nils Henrik Risebro

We present a corrected operator splitting (COS) method for solving nonlinear parabolic equations of convection-diiusion type. The main feature of this method is the ability to correctly resolve nonlinear shock fronts for large time steps, as opposed to standard operator splitting (OS) which fails to do so. COS is based on solving a conservation law for modeling convection, a heat type equation ...

Journal: :Discrete and Continuous Dynamical Systems-series B 2022

<p style='text-indent:20px;'>In this paper, we are concerned with the dynamical behavior of stochastic nonclassical parabolic equation, more precisely, it is shown that inviscid limits diffusion equations reduces to heat equations. The key points in proof our convergence results establishing some uniform estimates and regularity theory for solutions which independent parameter. Based on e...

D. Younesian, M. S. Fallahzadeh,

Nonlinear vibration of parabolic springs employed in suspension system of a freight car has been studied in this paper. First, dynamical behavior of the springs is investigated by using finite element method and the obtained results are then used in vibration analysis of a railway freight car. For this purpose, dynamics of a parabolic spring subjected to a cyclic excitation has been studied ...

Journal: :International Mathematics Research Notices 2023

Abstract This paper defines a parabolic frequency for solutions of the heat equation along homothetically shrinking mean curvature flows (MCFs) and proves its monotonicity such flows. As corollary, provides proof backwards uniqueness. Additionally, more general equations on MCF shrinkers, this bounds derivative frequency, which similarly imply

2008
Qinghua Feng

A class of alternating group explicit iterative method using the C-N scheme is derived for solving four order parabolic equations, and the analysis for convergency is given. In the end, the numerical result is given, which shows the iterative method is convergent, high precision, and is suitable for parallel computing. 1 Preface In Science and engineering computing, parabolic equations are impo...

2017
H. AMANN

In the first part of this paper, we study abstract parabolic evolution equations involving Banach space-valued measures. These results are applied in the second part to second-order parabolic systems under minimal regularity hypotheses on the coefficients. DOI: https://doi.org/10.1007/s10958-005-0376-8 Posted at the Zurich Open Repository and Archive, University of Zurich ZORA URL: https://doi....

2016
GEORGIOS AKRIVIS BUYANG LI

We establish optimal order a priori error estimates for implicit– explicit BDF methods for abstract semilinear parabolic equations with timedependent operators in a complex Banach space setting, under a sharp condition on the non-self-adjointness of the linear operator. Our approach relies on the discrete maximal parabolic regularity of implicit BDF schemes for autonomous linear parabolic equat...

In the present work the efficiency of a solar parabolic trough has been investigated experimentality. parabolic trough solar collector constitute a proven source of thermal energy for industrial process heat and power genaration. The impact of  using the partially porous media in the absorber on the efficiency of PTC (parabolic trough collector) has been investigated. The porosity of copper foa...

بیابانکی, فرزانه السادات , حسین پور, علیرضا ,

  Phosphorus (P) after nitrogen limits agricultural production in most region of the world. Information about P release rate is limited in Hamadan soils. The objective of this research was to study P release in 10 soils from Hamadan province by successive extraction with 0.5 M NaHCO over a period of 1752 h and the correlation of P release characteristics with soil properties and corn plant (Zea...

Journal: :Journal of the Mathematical Society of Japan 1969

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