The Proceedings of The Computational Mechanics Conference
Online ISSN : 2424-2799
2023.36
Session ID : OS-0901
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A new governing equation of flow immersed solid body:
implementation of slip and noslip wall conditions
*Nobuyuki OSHIMANobuto NAKAMICHI
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Abstract

This re search propose s a new fundamen ta l equation that can be so lved with a f inite resolution grid in a f low f ield in which a solid region is immerse d. He re, th e so lid boundary is d efined not as a wall condition but as an interfacial layer r egion with a finite thickne ss by a level-set func tion. A new fundamental equation for the flow is derived. Stable numer ical ca lculations of the model equations corresponding to the wall conditions with and without slip ar e verified on a two-dimensional equ idistant gr id without using upwind diff erencing, artificial viscosity, or additional filter operations.

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© 2023 The Japan Society of Mechanical Engineers
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