FEATool includes built-in Navier-Stokes solvers for stationary and transient fluid flows. It also interfaces with external solvers like FeatFlow and FEniCS to perform large-scale, high-performance CFD simulations directly from the Matlab GUI. These external solvers allow for parallel simulations like DNS of flow over aircraft wings. FEATool supports various pre-defined multiphysics modes for coupled problems involving fluid flow, heat transfer, mass transport, and structural mechanics.

1. Dedicated CFD Solvers
FEATool includes both built-in Navier-Stokes solvers for stationary and transient flows, as well
as interfaces with the external FEM-CFD solver FeatFlow and the general FEM solver FEniCS.
This allows one to perform large scale high performance CFD simulations directly from the
FEATool Multiphysics
Multiphysics CFD FEATool Articles Doc FAQ About
FEATool Multiphysics
- Matlab CFD Toolbox

2. Matlab GUI interface. In particular FEniCS can be used to perform parallel HPC-CFD direct
numerical simulations (DNS), as for example done here with flow over an aircraft wing
CFD Toolbox Features
CFD GUI Toolbox for Matlab and Octave
Built-in preprocessing, solvers, postprocessing and visualization
Pre-defined multiphysics modes for incompressible fluid flow, porous media flows, heat
and mass transport, and structural mechanics couplings
Built-in stationary and time-dependent solvers with stabilization of convective effects
(artificial diffusion)
Easily customizable equations and non-linear coefficients
External CFD and HPC solver support for FeatFlow and FEniCS
Special stable finite element FEM shape functions for fluid flows
Plotly Interactive CFD Visualization
With the Plotly FEATool integration interactive visualization, postprocessing, and result sharing
via the web and Plotly cloud services is fully supported.
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3. Matlab CFD Toolbox
The FEATool Multiphysics and Octave and Matlab CFD Toolbox makes it easy to set up and
solve complex computational fluid dynamics problems directly in Matlab.
Performing complex CFD simulations in Matlab and Octave have never been so easy. With
FEATool, time-dependent and stationary fluid mechanics simulation and flow engineering
problems can be defined and quickly set up directly in the convenient graphical user interface
(GUI). Moreover, with multiphysics, the pressure and flow field can be coupled to different
physical phenomena such as mass and chemical transport, and heat transfer models allowing
for complex CFD simulations such as multiphase and reactive flows to defined and simulated
with ease. Also, with the higher order FEM elements complex quantities such as aerodynamic
lift and drag forces can be evaluated very precisely.
Fluid Dynamics Tutorials and Examples
FEATool includes many CFD specific tutorial models for stationary and dynamic types of fluid
flow problems, multi-phase flows, and coupled fluid-multiphysics problems, for example
CFD benchmark and validation test cases
Incompressible fluid flows in 2D, 3D, and Axisymmetry
Coupled heat transfer and fluid flow through natural convection
Two-Phase flows with immiscible fluids
Matlab CFD - Computational Fluid Dynamics Si…

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Multiphysics for Fluid Dynamics
The 15 easy to use pre-defined FEATool physics modes makes it easy to set up coupled and
complex fluid flow problems in any dimension, such as heat and mass transport problems, fluid-
structure interaction (FSI), and porous media flows.
In addition, as FEATool can parse general nonlinear string expressions, including dependent
variables and derivatives, one can define complex equation coefficients without any
programming or user defined functions by simply typing in the expression as normally written
on paper. This can for example be used to quickly define non-Newtonian fluids by modifying the
viscosity coefficient.
Pre-defined physics modes for incompressible fluid flows, porous media flows, fluid heat and
mass transport, and enabling structural mechanics couplings for fluid-structure interactions
Navier-Stokes Equations
Brinkman Equations
Darcy's Law
Heat Transfer
Convection and Diffusion
Structural Mechanics