Results 21 to 30 of about 11,893,583 (290)

Dynamic Behaviours of a Filament in a Viscoelastic Uniform Flow

open access: yesFluids, 2021
The dynamic behaviours of a filament in a viscoelastic uniform flow were investigated by an immersed boundary-lattice Boltzmann method. The effects of the Reynolds numbers (Re, ranging from 10 to 200) and the Weissenberg number (Wi, ranging from 0 to 1.2)
Jingtao Ma   +3 more
doaj   +1 more source

Velocity Reconstruction of Arbitrary Shaped Incompressible Flow Field with Noises Using Seamless Immersed Boundary Method

open access: yesJournal of Thermal Science and Technology, 2012
In order to reconstruct the arbitrary shaped incompressible velocity field with noises, a new data-processing fluid dynamics (DFD) based upon the seamless immersed boundary method is proposed.
Hidetoshi NISHIDA
doaj   +1 more source

The immersed boundary method [PDF]

open access: yesActa Numerica, 2002
This paper is concerned with the mathematical structure of the immersed boundary (IB) method, which is intended for the computer simulation of fluid–structure interaction, especially in biological fluid dynamics. The IB formulation of such problems, derived here from the principle of least action, involves both Eulerian and Lagrangian variables ...
openaire   +1 more source

The calibration of fluid-object interaction in immersed boundary method

open access: yesEPJ Web of Conferences, 2017
In modelling of elastic objects immersed in a fluid, very important part of the model is the interaction between objects and fluid. In models based on immersed boundary method and lattice-Boltzmann method, this interaction is mediated by friction ...
Bušík Martin, Cimrák Ivan
doaj   +1 more source

Immersed Boundary Method Using Ghost Cells in a Three-Dimensional Case

open access: yesСовременные информационные технологии и IT-образование, 2020
When solving numerically gas dynamics problems, one often encounters difficulties in processing regions with complex geometry. Generating consistent computational grids for such areas may be a complex task.
Alexey Rybakov
doaj   +1 more source

Numerical Modeling of Sperm Swimming

open access: yesFluids, 2021
Due to rising human infertility, sperm motility has been an important subject. Among the hundreds of millions of sperms on the journey up the oviducts, only a few excellent travelers will reach the eggs.
Fang-Bao Tian, Li Wang
doaj   +1 more source

Simulations of the Whirling Instability by the Immersed Boundary Method [PDF]

open access: yesSIAM Journal on Scientific Computing, 2004
Summary: When an elastic filament spins in a viscous incompressible fluid it may undergo a whirling instability, as studied asymptotically by \textit{C. W. Wolgemuth, T. R. Powers}, and \textit{R. E. Goldstein} [Phys. Rev. Lett. 84, 16--23 (2000)]. We use the immersed boundary (IB) method to study the interaction between the elastic filament and the ...
Sookkyung Lim, Charles S. Peskin
openaire   +3 more sources

An Efficient Immersed Boundary Method for Solving the Unsteady Flow through Actual Geometries of Reed Valves [PDF]

open access: yes, 2012
In refrigeration compressors, the suction and discharge valves are responsible for the retention of the refrigerant from the suction chamber to the cylinder and passage from the cylinder to the discharge chamber.
Barbi, Franco   +2 more
core   +1 more source

A Combined Immersed Boundary Method for Flows with Scalar Transport

open access: yesJournal of Chemical Engineering of Japan
A solid volume fraction type immersed boundary method and a ghost cell immersed boundary method are combined for solving flows with scalar transport such as concentration of chemical species and heat.
Yuta Yaegashi   +4 more
doaj   +1 more source

Immersed Boundary-Finite Difference Lattice Boltzmann Method for Liquid-Solid Two-Phase Flows

open access: yesJournal of Fluid Science and Technology, 2011
An immersed boundary method based on a finite difference lattice Boltzmann method (IB-FDLBM) is presented. The FDLBM solves the discrete Boltzmann equation including an additional collision term by using finite difference schemes.
Roberto ROJAS   +3 more
doaj   +1 more source

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