Results 1 to 10 of about 3,296 (166)

Divergence-Free SPH for Incompressible and Viscous Fluids [PDF]

IEEE Transactions on Visualization and Computer Graphics, 2017
In this paper we present a novel Smoothed Particle Hydrodynamics (SPH) method for the efficient and stable simulation of incompressible fluids. The most efficient SPH-based approaches enforce incompressibility either on position or velocity level. However, the continuity equation for incompressible flow demands to maintain a constant density and a ...
Jan Bender, Dan Koschier
exaly   +4 more sources

An entropic interpolation problem for incompressible viscous fluids [PDF]

Annales De L'institut Henri Poincare (B) Probability and Statistics, 2020
In view of studying incompressible inviscid fluids, Brenier introduced in the late 80's a relaxation of a geodesic problem addressed by Arnold in 1966. Instead of inviscid fluids, the present paper is devoted to incompressible viscid fluids. A natural analogue of Brenier's problem is introduced, where generalized flows are no more supported by ...
Ana Bela Cruzeiro, Christian Leonard, Jean-Claude Zambrini   +2 more
exaly   +8 more sources

Optimal Control Theory for a System of Partial Differential Equations Associated with Stratified Fluids

Mathematics, 2021
In this paper, we investigate the existence of an optimal solution of a functional restricted to non-linear partial differential equations, which ruled the dynamics of viscous and incompressible stratified fluids in R3.
Edgardo Alvarez, Hernan Cabrales, Tovias Castro   +2 more
doaj   +1 more source

A new upper bound for the largest growth rate of linear Rayleigh–Taylor instability

Journal of Inequalities and Applications, 2021
We investigate the effect of (interface) surface tensor on the linear Rayleigh–Taylor (RT) instability in stratified incompressible viscous fluids.
Changsheng Dou, Jialiang Wang, Weiwei Wang   +2 more
doaj   +1 more source

Convective layered flows of a vertically whirling viscous incompressible fluid. Temperature field investigation

Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2020
The paper discusses a class of exact solutions of the Oberbeck–Boussinesq equations suitable for describing three-dimensional nonlinear layered flows of a vertically swirling viscous incompressible fluid.
Natal'ya Vladimirovna Burmasheva, Eugenii Yurevich Prosviryakov   +1 more
doaj   +1 more source

Dynamic programming approach to structural optimization problem - numerical algorithm [PDF]

Opuscula Mathematica, 2014
In this paper a new shape optimization algorithm is presented. As a model application we consider state problems related to fluid mechanics, namely the Navier-Stokes equations for viscous incompressible fluids.
Piotr Fulmański, Andrzej Nowakowski, Jan Pustelnik   +2 more
doaj   +1 more source

On the Evolution of Compressible and Incompressible Viscous Fluids with a Sharp Interface

Mathematics, 2021
In this paper, we consider some two phase problems of compressible and incompressible viscous fluids’ flow without surface tension under the assumption that the initial domain is a uniform Wq2−1/q domain in RN (N≥2). We prove the local in the time unique
Takayuki Kubo, Yoshihiro Shibata
doaj   +1 more source

Convective two-layered flow and temperature distribution through an inclined porous medium in a rotating system [PDF]

Songklanakarin Journal of Science and Technology (SJST), 2020
The convective motion of two incompressible viscous fluids that are different in thermal conductivities, viscosities and densities with heat transfer aspects in a rotating inclined channel, in which the pressure gradient is kept constant, is studied ...
Karuna Sree Chitturi, Sri Ramachandra Murty Paramsetti, Sobhan Babu Kappala   +2 more
doaj   +1 more source

Traveling Waves of Some Symmetric Planar Flows of Non-Newtonian Fluids [PDF]

Journal of Applied and Computational Mechanics, 2019
We present some variants of Burgers-type equations for incompressible and isothermal planar flow of viscous non-Newtonian fluids based on the Cross, the Carreau and the power-law rheology models, and on a symmetry assumption on the flow.
Dongming Wei, Yupeng Shu
doaj   +1 more source

On Rayleigh–Taylor instability in Navier–Stokes–Korteweg equations

Journal of Inequalities and Applications, 2023
This paper focuses on the Rayleigh–Taylor instability in the two-dimensional system of equations of nonhomogeneous incompressible viscous fluids with capillarity effects in a horizontal periodic domain with infinite height.
Xuyan Zhang, Fangfang Tian, Weiwei Wang
doaj   +1 more source