[mkraposhin]

QGDsolver is OpenFOAM framework for simulation of fluid flows using regularized equations approach. It contains library for approximation of partial derivatives at face centers of unstructured grids and a set of OpenFOAM solvers:

• QGDFoam - solver for compressible viscous perfect gas flows in a wide Mach number range - from 0 to infinity
• QHDFoam - solver for incompressible viscous fluid flows with buoyancy force
• particlesQGDFOam - solver for compressible viscous perfect gas flows in a wide Mach number range with particles - from 0 to infinity
• particlesQHDFoam - solver for incompressible viscous fluid flows with buoyancy force with particles
• SRFQHDFoam - solver for incompressible viscous fluid flows in rotating frame of reference with buoyancy force
• QHDDyMFoam - solver for incompressible viscous fluid flows in domains with deforming boundary and with buoyancy force
• interQHDFoam - solver for incompressible 2-phase viscous fluid flows with buoyancy force and surface tension
• reactingLagrangianQGDFoam - solver for reacting multicomponent compressible viscous perfect gas flows in a wide Mach number range with particles - from 0 to infinity
• scalarTransportQHDFoam - solver for scalar transport equation to demonstrate the very basics of QGD/QHD equations principles

Generally speaking, QGD/QHD framework offers an alternative to PISO/SIMPLE and Riemann-solvers approach to simulate various flow phenomena on unstructured grids. And sometimes it could be superior comparing to mentioned techniques.

The framework could be downloaded HERE: https://github.com/unicfdlab/QGDsolver

The presentation covering some theory and basics of the implemeted approach could be downloaded HERE: https://github.com/unicfdlab/QGDsolver/blob/master/qgd-framework-2020-final.pdf

Please, do not hesitate to ask for assistance on how to setup the case or on how to derive new equations for your problem using regularized hydrodynamic approach