Results 31 to 40 of about 394,180 (145)

A Neural Network-Based Feature Recognition Method in Adaptive Refinement for Efficient Reynolds Equation Solving

Lubricants
This study proposes an adaptive refinement method based on feature recognition to rapidly obtain solutions of the Reynolds equation. Leveraging an isogeometric analysis (IGA) solution framework supporting local refinement, three natural refinement ...
Gang Rao, Lei Ma, Bingquan Zuo, Jiashu Yang, Weikang Xie   +4 more
doaj   +1 more source

Multigrid elliptic equation solver with adaptive mesh refinement

, 2004
In this paper we describe in detail the computational algorithm used by our parallel multigrid elliptic equation solver with adaptive mesh refinement. Our code uses truncation error estimates to adaptively refine the grid as part of the solution process.
Bai, Bakhvalov, Bowen, Brandt, Brandt, Brandt, Briggs, Brown, Brügmann, Brügmann, Brügmann, Chesshire, Choi, Choptuik, Choptuik, Choptuik, Cook, Diener, Fedorenko, Fedorenko, Imbiriba, J. David Brown, Kidder, Lindblom, Lindblom, Lisa L. Lowe, MacNeice, Matzner, McCormick, Misner, New, Papadopoulos, Press, Scheel, Schnetter, Trottenberg   +35 more
core   +1 more source

Closed-form equation for natural frequencies of beams under full range of axial loads modeled with a spring-mass system [PDF]

, 2019
A new simple closed-form equation that accurately predicts the effect of an arbitrarily large constant axial load, residual stress or temperature shift on the natural frequencies of an uniform single-span beam, with various end conditions, is presented ...
Fernández Martínez, Daniel, Madrenas Boadas, Jordi, Valle Fraga, Juan José   +2 more
core   +2 more sources

Applying CEGAR to the Petri Net State Equation [PDF]

Logical Methods in Computer Science, 2012
We propose a reachability verification technique that combines the Petri net state equation (a linear algebraic overapproximation of the set of reachable states) with the concept of counterexample guided abstraction refinement. In essence, we replace the
Karsten Wolf, Harro Wimmel
doaj   +1 more source

Adaptive meshless centres and RBF stencils for Poisson equation [PDF]

, 2011
We consider adaptive meshless discretisation of the Dirichlet problem for Poisson equation based on numerical differentiation stencils obtained with the help of radial basis functions. New meshless stencil selection and adaptive refinement algorithms are
Babuska, Benito, Boyd, Buhmann, Cecil, Dang Thi Oanh, Davydov, Davydov, Davydov, Davydov, Ding, Du, Duarte, Fasshauer, Floater, Idelsohn, Iske, Jensen, Kamruzzaman, Lee, Liszka, Liszka, Liu, Liu, Lu, Löhner, Melenk, Mitchell, Nguyen, Oleg Davydov, Oñate, Perazzo, Rabczuk, Schaback, Schönauer, Seibold, Shen, Shu, Tolstykh, Wendland, Wright   +40 more
core   +1 more source

Mathematical modeling of thermal stabilization of vertical wells on high performance computing systems

, 2013
Temperature stabilization of oil and gas wells is used to ensure stability and prevent deformation of a subgrade estuary zone. In this work, we consider the numerical simulation of thermal stabilization using vertical seasonal freezing columns.
Pavlova, Natalia V., Vabishchevich, Petr N., Vasilyeva, Maria V.   +2 more
core   +1 more source

Thermal management of heating elements in vacuum [PDF]

AIP Advances
Thermal management of heating elements placed in a vacuum must be handled carefully due to the lack of convective cooling and the difficulty of replacing components.
Shuang Li, Zaman Tekin, Lin Fan, Sen Li, Fengquan Zhang, Saeed Ahmad, Zhiyuan Lin, Mohan Zhang, Xiaotong Liu, Jin Hu, David Yang, William Yang, Chandrashekar Radhakrishnan, Tim Byrnes, Valentin Ivannikov   +14 more
doaj   +1 more source

DISCONTINUOUS GALERKIN DISCRETIZATION AND HP-REFINEMENT FOR THE RESOLUTION OF THE NEUTRON TRANSPORT EQUATION [PDF]

, 2013
International audienceThis paper presents a hp−refinement method for a first order scalar transport- reaction equation discretized by a discontinuous Galerkin method.
Fournier, Damien, Herbin, Raphaele, Le Tellier, Romain   +2 more
core   +3 more sources

Kinetics of conversion of brushite coatings to hydroxyapatite in alkaline solution

Journal of Materials Research and Technology, 2018
This work describes the kinetics of conversion of brushite coatings, produced by chemical deposition, to hydroxyapatite. The conversion was performed in alkaline solution at three temperatures: 50 °C, 55 °C, and 60 °C. The evolution of the transformation
Daniel Navarro da Rocha, Marcelo H. Prado da Silva, José Brant de Campos, Rubens L. Santana Blazutti Marçal, Dindo Q. Mijares, Paulo G. Coelho, Leila Rosa Cruz   +6 more
doaj   +1 more source

The refinement-schemes-based unified algorithms for certain nth order linear and nonlinear differential equations with a set of constraints

Advances in Difference Equations, 2021
We first present a generalized class of binary interpolating refinement schemes and their properties. Then the refinement-schemes-based unified algorithms for the solution of certain nth order linear and nonlinear differential equations with a set of ...
Syeda Tehmina Ejaz, Ghulam Mustafa, Dumitru Baleanu, Yu-Ming Chu   +3 more
doaj   +1 more source