Results 41 to 50 of about 10,752 (148)

The Matrix‐Free Macro‐Element Hybridized Discontinuous Galerkin Method for Steady and Unsteady Compressible Flows

open access: yesInternational Journal for Numerical Methods in Fluids, Volume 97, Issue 4, Page 462-483, April 2025.
We investigate the macro‐element hybridized discontinuous Galerkin (HDG) method that combines advantages of continuous and discontinuous finite elements for compressible flow analysis. To efficiently handle large systems, we focus on computational strategies at the level of the direct local solver and the matrix‐free iterative global solver.
Vahid Badrkhani   +3 more
wiley   +1 more source

Internal Gerstner waves: applications to dead water

open access: yes, 2013
We give an explicit solution describing internal waves with a still water surface, modelling the dead water phenomenon, on the basis of the Gerstner wave solution to the Euler ...
Stuhlmeier, Raphael
core   +1 more source

A Numerical Framework for Fast Transient Compressible Flows Using Lattice Boltzmann and Immersed Boundary Methods

open access: yesInternational Journal for Numerical Methods in Engineering, Volume 126, Issue 3, 15 February 2025.
ABSTRACT This article is dedicated to the development of a model to simulate fast transient compressible flows on solid structures using immersed boundary method (IBM) and a lattice Boltzmann solver. Ultimately, the proposed model aims at providing an efficient algorithm to simulate strongly‐coupled fluid‐structure interactions (FSI). Within this goal,
Hippolyte Lerogeron   +3 more
wiley   +1 more source

Relativistic Mechanics of Continuous Media [PDF]

open access: yes, 2001
In this work we study the relativistic mechanics of continuous media on a fundamental level using a manifestly covariant proper time procedure. We formulate equations of motion and continuity (and constitutive equations) that are the starting point for ...
Horwitz, L. P., Sklarz, S.
core   +2 more sources

A Review on High‐Speed Electromagnetic Flow Control and Applications Considering Numerical Methods, Simulations, and Experimental Research Data

open access: yesInternational Journal of Aerospace Engineering, Volume 2025, Issue 1, 2025.
Background: Electromagnetic flow control is crucial in hypersonic gas dynamics, with key aspects of boundary layer electromagnetic flow control reviewed, focusing on numerical methods, simulations, and experimental research. Numerical Methods: Challenges such as numerical stiffness and instability arise from the coupling of electromagnetic fields with ...
Yang Du, Jun Liu, Hao Chen
wiley   +1 more source

Capabilities and limitations of smoothed particle hydrodynamics for the simulation of two‐phase flow instabilities

open access: yesPAMM, Volume 24, Issue 4, December 2024.
Abstract Smoothed particle hydrodynamics (SPH) is a mesh‐free, Lagrangian particle‐based method that is able to simulate multiphase flows in an economical manner. However, its ability to capture the flow regimes and regime transitions in two phase (liquid‐gas) internal flows, such as pipe or channel flows is not yet generally established.
Rishindra Vallem   +2 more
wiley   +1 more source

Standing waves and jets on a sessile, incompressible bubble

open access: yesThe Physics of Fluids
We show numerically that large amplitude, shape deformations imposed on a spherical-cap, incompressible, sessile gas bubble pinned on a rigid wall can produce a sharp, wall-directed jet.
Yashika Dhote   +4 more
semanticscholar   +1 more source

Form and function of anguilliform swimming

open access: yesBiological Reviews, Volume 99, Issue 6, Page 2190-2210, December 2024.
ABSTRACT Anguilliform swimmers are long and narrow animals that propel themselves by undulating their bodies. Observations in nature and recent investigations suggest that anguilliform swimming is highly efficient. However, understanding the underlying reasons for the efficiency of this type of locomotion requires interdisciplinary studies spanning ...
Vincent Stin   +3 more
wiley   +1 more source

Higher‐order integrable models for oceanic internal wave–current interactions

open access: yesStudies in Applied Mathematics, Volume 153, Issue 4, November 2024.
Abstract In this paper, we derive a higher‐order Korteweg–de Vries (HKdV) equation as a model to describe the unidirectional propagation of waves on an internal interface separating two fluid layers of varying densities. Our model incorporates underlying currents by permitting a sheared current in both fluid layers, and also accommodates the effect of ...
David Henry   +2 more
wiley   +1 more source

Transient computational homogenization of heterogeneous poroelastic media with local resonances

open access: yesInternational Journal for Numerical Methods in Engineering, Volume 125, Issue 18, 30 September 2024.
Abstract A computational homogenization framework is proposed for solving transient wave propagation in the linear regime in heterogeneous poroelastic media that may exhibit local resonances due to microstructural heterogeneities. The microscale fluid‐structure interaction problem and the macroscale are coupled through an extended version of the Hill ...
Renan Liupekevicius   +3 more
wiley   +1 more source

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