FEM ConstraintInitialPressure

Constraint initial flow velocity

Constraint flow velocity

FEM

FEM ConstraintInitialPressure
Menu location
Model → Fluid boundary conditions → Initial pressure condition
Workbenches
FEM
Default shortcut
None
Introduced in version
0.21
See also
FEM Constraint initial flow velocity

Solvers
Elmer

Description

Creates an initial pressure condition for a fluid flow analysis.

Usage

1. Press the Initial pressure condition button or select the menu Model → Fluid boundary conditions → Initial pressure condition.
2. Enter an initial pressure value.
3. For a 3D analysis, select a 'solid' (body) from your model, for a 2D analysis select a face.

Notes

For simple analyses, it is not necessary to specify the initial pressure, however also in these cases it is recommended as best practice.

Constraint initial flow velocity

Constraint flow velocity

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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• Mesh: Mesh Netgen, Mesh GMSH, Mesh boundary layer, Mesh region, Mesh group, Nodes set, Mesh to mesh

• Solve: CalculiX Standard, Elmer, Mystran, Z88; Equations: Deformation, Elasticity, Electrostatic, Electricforce, Magnetodynamic, Magnetodynamic 2D, Flow, Flux, Heat; Solver: Solver control, Solver run

• Results: Purge, Show; Postprocessing: Apply changes, Pipeline from result, Warp filter, Scalar clip filter, Function cut filter, Region clip filter, Contours filter, Line clip filter, Stress linearization plot, Data at point clip filter, Filter function plane, Filter function sphere, Filter function cylinder, Filter function box

• Utilities: Clipping plane, Remove clipping planes, Open FEM examples; Mesh clear, Mesh display info

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• Additional: Preferences; FEM Install, FEM Mesh, FEM Solver, FEM CalculiX, FEM Concrete; FEM Element Types

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