Results 21 to 30 of about 101,709 (214)

The simulation of gas-dynamic characteristics of centrifugal compressors in turbo-expander units [PDF]

open access: yesE3S Web of Conferences, 2019
Prof. Y. Galerkin and his team have developed and completed designs of 19 single-stage centrifugal compressors for turbo-expander packaged units applying Universal Modeling Method for the company “Turbokholod JSC” since 2005. The most powerful compressor
Rekstin A.   +4 more
doaj   +1 more source

Equivalence Between DFR Method and DG Method for Solving Parabolic Equation and Convection-diffusion Equation

open access: yesJournal of Harbin University of Science and Technology, 2022
The equivalence between direct flux reconstruction method and discontinuous Galerkin method for solving parabolic equation and convection-diffusion equation is studied.
BI Hui, LIU Lei
doaj   +1 more source

The meshless Galerkin method for pressure distribution simulation of horizontal well reservoir

open access: yesPetroleum, 2015
This paper provides a novel three-dimensional meshless Galerkin for horizontal well reservoir simulation. The pressure function is approached by moving least-square method which consists of weight function, basic function and coefficient.
Shuyong Hu   +3 more
doaj   +1 more source

Natural neighbour Galerkin methods [PDF]

open access: yesInternational Journal for Numerical Methods in Engineering, 2000
Natural neighbour co-ordinates (Sibson co-ordinates) is a well-known interpolation scheme for multivariate data fitting and smoothing. The numerical implementation of natural neighbour co-ordinates in a Galerkin method is known as the natural element method (NEM).
Sukumar, N.   +3 more
openaire   +2 more sources

The Galerkin Method for Solving Strongly Nonlinear Oscillators

open access: yesThe Scientific World Journal, 2022
In this paper, we make use of the Galerkin method for solving nonlinear second-order ODEs that are related to some strongly nonlinear oscillators arising in physics and engineering. We derive the iterative schemes for finding the coefficients that appear
Alvaro H. S. Salas
doaj   +1 more source

Spherical Grid Creation and Modeling Using the Galerkin Compiler GC_Sphere

open access: yesAtmosphere, 2023
The construction of spherical grids is, to a large extent, a question of organized programming. Such grids come in the form of rhomboidal/triangular grids and hexagonal grids.
Jürgen Steppeler
doaj   +1 more source

On Gakerkin approximations for the surface-active quasigeostrophic equations

open access: yes, 2015
We study the representation of solutions of the three-dimensional quasigeostrophic (QG) equations using Galerkin series with standard vertical modes, with particular attention to the incorporation of active surface buoyancy dynamics.
Grooms, Ian   +2 more
core   +1 more source

Adaptive Spectral Galerkin Methods with Dynamic Marking [PDF]

open access: yes, 2015
The convergence and optimality theory of adaptive Galerkin methods is almost exclusively based on the D\"orfler marking. This entails a fixed parameter and leads to a contraction constant bounded below away from zero.
Canuto, Claudio   +3 more
core   +2 more sources

Constrained sparse Galerkin regression [PDF]

open access: yesJournal of Fluid Mechanics, 2018
The sparse identification of nonlinear dynamics (SINDy) is a recently proposed data-driven modelling framework that uses sparse regression techniques to identify nonlinear low-order models. With the goal of low-order models of a fluid flow, we combine this approach with dimensionality reduction techniques (e.g.
Loiseau, Jean-Christophe   +1 more
openaire   +4 more sources

The BEM with graded meshes for the electric field integral equation on polyhedral surfaces [PDF]

open access: yes, 2015
We consider the variational formulation of the electric field integral equation on a Lipschitz polyhedral surface $\Gamma$. We study the Galerkin boundary element discretisations based on the lowest-order Raviart-Thomas surface elements on a sequence of ...
Bespalov, Alex, Nicaise, Serge
core   +4 more sources

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