نتایج جستجو برای: artificial compressibility

تعداد نتایج: 292008  

2016
Taku Ohwada Pietro Asinari Daisuke Yabusaki

Both the artificial compressibility method and the lattice Boltzmann method yield the solutions of the incompressible Navier-Stokes equations in the limit of the vanishing Mach number. The inclusion of the bulk viscosity is one of the reasons for the success of the lattice Boltzmann method since it removes quickly the acoustic mode, which inevitably appears as the compressible effect, and contr...

Journal: :J. Comput. Physics 2010
Taku Ohwada Pietro Asinari

The artificial compressibility method for the incompressible Navier-Stokes equations is revived as a high order accurate numerical method (4th order in space and 2nd order in time). Similar to the lattice Boltzmann method, the mesh spacing is linked to the Mach number. The accuracy higher than that of the lattice Boltzmann method is achieved by exploiting the asymptotic behavior of solution of ...

Journal: :Journal of Marine Science and Engineering 2020

Journal: :Computers & Mathematics with Applications 2011
Taku Ohwada Pietro Asinari Daisuke Yabusaki

Both the artificial compressibility method and the lattice Boltzmann method yield the solutions of the incompressible Navier-Stokes equations in the limit of the vanishing Mach number. The inclusion of the bulk viscosity is one of the reasons for the success of the lattice Boltzmann method since it removes quickly the acoustic mode, which inevitably appears as the compressible effect, and contr...

2016
T. Fikret Kurnaz Ugur Dagdeviren Murat Yildiz Ozhan Ozkan

The compression index and recompression index are one of the important compressibility parameters to determine the settlement calculation for fine-grained soil layers. These parameters can be determined by carrying out laboratory oedometer test on undisturbed samples; however, the test is quite time-consuming and expensive. Therefore, many empirical formulas based on regression analysis have be...

2015
JÁN PITEĽ MÁRIA TÓTHOVÁ STELLA HREHOVÁ ALENA VAGASKÁ

Pneumatic artificial muscles exhibit highly non-linear static characteristics especially due to inherent properties of their materials and compressibility of air. Therefore, it is difficult to control them without adequate modeling and simulation. The paper deals with the numerical approximation of the static characteristics of McKibben pneumatic artificial muscle. The muscle force dependence o...

Journal: :Physical Review E 2021

Artificial compressibility methods aim to reduce the stiffness of compressible Navier-Stokes equations by artificially decreasing velocity acoustic waves in fluid. This approach has originally been developed as an alternative incompressible this avoids resolution a Poisson equation. paper extends method anisothermal low Mach number flows, allowing simulations subsonic flows submitted large temp...

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