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Permeable and Non-reflecting Boundary Conditions in SPH

ARAN - Access to Research at NUI Galway

Show simple item record Lastiwka, Martin en Basa, Mihai en Quinlan, Nathan J. en 2010-07-06T15:49:25Z en 2010-07-06T15:49:25Z en 2009-11 en
dc.identifier.citation Lastiwka, M., Basa, M., & Quinlan, N. J. (2009). Permeable and non-reflecting boundary conditions in SPH. International Journal for Numerical Methods in Fluids, 61(7), 709-724. en
dc.identifier.uri en
dc.description.abstract Inflow and outflow boundary conditions are essential for the application of computational fluid dynamics to many engineering scenarios. In this paper we present a new boundary condition implementation that enables the simulation of flow through permeable boundaries in the Lagrangian mesh-free method, smoothed particle hydrodynamics (SPH). Each permeable boundary is associated with an inflow or outflow zone outside the domain, in which particles are created or removed as required. The analytic boundary condition is applied by prescribing the appropriate variables for particles in an inflow or outflow zone, and extrapolating other variables from within the domain. Characteristic-based non-reflecting boundary conditions, described in the literature for mesh-based methods, can be implemented within this framework. Results are presented for simple one-dimensional flows, quasi-one-dimensional compressible nozzle flow, and two-dimensional flow around a cylinder at Reynolds numbers of 40 and 100 and a Mach number of 0.1. These results establish the capability of SPH to model flows through open domains, opening a broad new class of applications. en
dc.language.iso en en
dc.publisher Wiley en
dc.subject Cylinder en
dc.subject Lagrangian en
dc.subject Particle en
dc.subject Meshfree en
dc.subject Boundary conditions en
dc.subject Smoothed particle hydrodynamics en
dc.title Permeable and Non-reflecting Boundary Conditions in SPH en
dc.type Article en
dc.local.publishedsource en
dc.description.peer-reviewed peer-reviewed en

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