You can also visit the Worldwide Sales Offices page at for address and contact information. For a list of such trademark owners, see Version: COMSOL 5.2 Contact Information Visit the Contact COMSOL page at to submit general inquiries, contact Technical Support, or search for an address and phone number. All other trademarks are the property of their respective owners, and COMSOL AB and its subsidiaries and products are not affiliated with, endorsed by, sponsored by, or supported by those trademark owners. COMSOL, COMSOL Multiphysics, Capture the Concept, COMSOL Desktop, LiveLink, and COMSOL Server are either registered trademarks or trademarks of COMSOL AB. This Documentation and the Programs described herein are furnished under the COMSOL Software License Agreement ( and may be used or copied only under the terms of the license agreement. A Discontinuous Galerkin formulation is applied for the Dispersed Phase/Gas Boundary Condition in order to switch from a Dispersed phase/Gas outlet condition to a Dispersed phase/Gas concentration condition on the parts of the outlet where backflow occurs.Īn example of a mixture stagnation flow for which the exterior dispersed phase volume fraction has been set to zero.2 Introduction to COMSOL Multiphysics COMSOL Protected by U.S. For this reason, the Outlet features have been provided with an Exterior dispersed phase/gas conditions section including an input field for the Dispersed phase volume fraction/Effective gas density and options for specifying the number density when solved for. In some cases (even when Suppress backflow is selected), it is not possible to avoid backflow on the entire boundary.
The Mixture Model and Bubbly Flow interfaces have been updated with a new outlet Pressure condition, which includes options for Suppress backflow and Normal flow. A flow is pumped through the filter, where the effect of the porous filter and the perforations in the supporting plate on the turbulent flow are automatically accounted for in the flow interface. This figure shows a porous filter, furthest away from the viewer, supported by a perforated solid plate. This allows for the description of high interstitial velocities (i.e., high velocities in the pores). The Brinkman equations are solved in the porous domains and the Reynolds-averaged Navier-Stokes equations are solved in the free-flow domains.įinally, your modeling capabilities have been extended by the fact that the Forchheimer term can be added to the equations for porous media flow. The Enable porous media domains checkbox adds the Fluid and Matrix Properties feature.
You can either start with a porous media flow interface and add a free-flow domain or you can start with a free-flow interface and add a porous domain. These turbulence models are only available in the CFD and Heat Transfer Modules, but you can still couple them to Porous media flow interfaces available in other modules. You can activate this functionality by adding a Fluid and Matrix Properties domain node for the Algebraic yPlus or L-VEL turbulence models. The Single-Phase Flow interfaces can now model turbulent flow in a free medium that is coupled to a porous medium.