Novel pressure inlet and outlet boundary conditions for Smoothed Particle Hydrodynamics, applied to real problems in porous media flow

2020 ◽  
pp. 110029
Author(s):  
David W. Holmes ◽  
Peter Pivonka
Keyword(s):  
Porous Media ◽  
Boundary Conditions ◽  
Smoothed Particle Hydrodynamics ◽  
Porous Media Flow ◽  
Particle Hydrodynamics ◽  
Smoothed Particle

scholarly journals Consistent Thermo-Capillarity and Thermal Boundary Conditions for Single-Phase Smoothed Particle Hydrodynamics

Materials ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4530
Author(s):  
Claas Bierwisch
Keyword(s):  
Boundary Conditions ◽  
Smoothed Particle Hydrodynamics ◽  
Fluid Phase ◽  
Surface Force ◽  
Delta Function ◽  
Normal Vector ◽  
Large Set ◽  
Thermal Boundary Conditions ◽  
Particle Hydrodynamics ◽  
Smoothed Particle

A model for capillary phenomena including temperature-dependency and thermal boundary conditions is presented in the numerical framework of smoothed particle hydrodynamics (SPH). The model requires only a single fluid phase and is therefore computationally more efficient than surface tension schemes which need an explicit fluid-fluid or fluid-gas interface. The model makes use of a surface identification mechanism based on the SPH renormalization tensor. All relevant properties of the continuum surface force (CSF) based approach, i.e., the delta function, normal vector and curvature, are calculated in a consistent manner. The model is parametrized by physical material properties and is successfully validated by means of a large set of analytical test cases. The applicability of the proposed model to more complex scenarios is demonstrated.

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