A unified computational fluid dynamics framework from rarefied to continuum regimes:

This Element presents a unified computational fluid dynamics framework from rarefied to continuum regimes. The framework is based on the direct modelling of flow physics in a discretized space. The mesh size and time step are used as modelling scales in the construction of discretized governing equa...

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Bibliographic Details
Main Author: Xu, Kun 1966- (Author)
Format: Electronic eBook
Language:English
Published: Cambridge Cambridge University Press 2021
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Online Access:BSB01
FHN01
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Summary:This Element presents a unified computational fluid dynamics framework from rarefied to continuum regimes. The framework is based on the direct modelling of flow physics in a discretized space. The mesh size and time step are used as modelling scales in the construction of discretized governing equations. With the variation-of-cell Knudsen number, continuous modelling equations in different regimes have been obtained, and the Boltzmann and Navier-Stokes equations become two limiting equations in the kinetic and hydrodynamic scales. The unified algorithms include the discrete velocity method (DVM)-based unified gas-kinetic scheme (UGKS), the particlebased unified gas-kinetic particle method (UGKP), and the wave and particle-based unified gas-kinetic wave-particle method (UGKWP). The UGKWP is a multi-scale method with the particle for non-equilibrium transport and wave for equilibrium evolution. The particle dynamics in the rarefied regime and the hydrodynamic flow solver in the continuum regime have been unified according to the cell's Knudsen number
Item Description:Title from publisher's bibliographic system (viewed on 31 May 2021)
Physical Description:1 Online-Ressource (97 Seiten)
ISBN:9781108877534
DOI:10.1017/9781108877534

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