![]() ![]() Generally speaking, the CFD Module can also solve fluid flow problems on any moving frame, not just on rotating frames, for example opening and closing valves. The frozen rotor approach is computationally inexpensive and can be used to estimate averaged velocities, pressure changes, mixing levels, averaged temperature and concentration distributions, and more. You can solve problems using either a full time-dependent description of the rotating system or an averaged approach based on the frozen rotor approximation. The CFD Module provides rotating machinery interfaces that formulate the fluid flow equations in rotating frames, available for both laminar and turbulent flow. Rotating machines, such as mixers and pumps, are common in processes and equipment where fluid flow occurs. Turbulent flow in porous media can be simulated with any of the epsilon- or omega-based RANS models with additional contributions according to Pedras–de Lemos or Nakayama–Kuwahara, or a combination thereof.įor more details on specific features and functionality, see the Porous Media Flow Module or Subsurface Flow Module. ![]() The model formulates the Brinkman equations for the porous domain and the Navier–Stokes equations for the free domains. The Free and Porous Media Flow model couples flow in porous domains with laminar or turbulent flow in free domains. Relevant for highly open structures with high porosity, this model is more general than Darcy's law, but also more computationally expensive. The Brinkman Equations model is an extension of Darcy's law that accounts for the dissipation of kinetic energy by viscous shear, and can include inertial effects. It is also available for multiphase flow. The Darcy's Law model is a robust and computationally inexpensive description of flows in porous structures. The CFD Module makes it simple to simulate fluid flow in porous media using three different porous media flow models. The simulation environment looks the same regardless of what you are modeling. Additional multiphysics couplings can be added together with other modules from the COMSOL product suite, such as combining fluid flow with large structural deformations in FSI. The CFD Module provides you with the tools to model nonisothermal flow with conjugate heat transfer, reacting flow, fluid–structure interaction (FSI), and electrohydrodynamics (EHD). The multiphysics capabilities are virtually unlimited within the module and in combination with other add-on modules to COMSOL Multiphysics ®. The CFD Module provides tools for modeling the cornerstones of fluid flow analyses, including: Perform computational fluid dynamic simulations with the CFD Module, an add-on product to the COMSOL Multiphysics ® software. Simulate Single-Phase and Multiphase Flow ![]()
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