FEM ConstraintInitialFlowVelocity

Constraint magnetization

Constraint initial pressure

FEM

FEM ConstraintInitialFlowVelocity
Menu location
Model → Fluid boundary conditions → Initial flow velocity condition
Workbenches
FEM
Default shortcut
None
Introduced in version
-
See also
Constraint flow velocity, Constraint initial pressure

Solvers
Elmer

Description

Creates an initial flow velocity condition for a fluid flow analysis.

Usage

1. Press the Initial flow velocity condition button or select the menu Model → Fluid boundary conditions → Initial flow velocity condition.
2. Enter an initial flow velocity value for the analysis. The value is entered as a combination of the 3 main cartesian vectors components (X,Y,Z).
3. For a 3D analysis, select a 'solid' (body) from your model, for a 2D analysis select a face. However, it is also possible to select a face (e.g. the inlet of a pipe) in 3D or an edge in 2D.

Formulas

For a description how to input formulas, see section Formulas in the page for the Flow velocity constraint.

Notes

In simple analyses, it is not necessary to specify the initial flow velocity, however it is recommended as best practice.

Constraint magnetization

Constraint initial pressure

FEM

FEM

• FEM Analysis

• Materials: Solid, Fluid, Nonlinear mechanical, Reinforced (concrete); Material editor

• Element geometry: Beam (1D), Beam rotation (1D), Shell (2D), Fluid flow (1D)

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Constraints

• Electromagnetic: Electrostatic potential, Current density, Magnetization

• Fluid: Initial flow velocity, Initial pressure, Flow velocity

• Geometrical: Plane rotation, Section print, Transform

• Mechanical: Fixed, Displacement, Contact, Tie, Spring, Force, Pressure, Centrif, Self weight

• Thermal: Initial temperature, Heat flux, Temperature, Body heat source

• Overwrite Constants: Constant vacuum permittivity

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