FEM ElementFluid1D: Difference between revisions

From FreeCAD Documentation
(Created page with "<translate> <!--T:1--> {{GuiCommand|Name=FEM ConstraintContact|MenuLocation=FEM → Constraint contact||Workbenches=FEM|Shortcut=|SeeAlso=FEM_tutorial|FEM...")
 
(Marked this version for translation)
(14 intermediate revisions by 3 users not shown)
Line 1: Line 1:
⚫
<languages/>
<translate>
<translate>
<!--T:10-->
{{Docnav|[[FEM_ElementGeometry2D|Shell plate thickness]]|[[FEM_ConstraintElectrostaticPotential|Constraint electrostatic potential]]|[[FEM_Module|FEM]]|IconL=FEM_ElementGeometry2D.png|IconC=Workbench_FEM.svg|IconR=Fem-constraint-electrostatic-potential.svg}}

<!--T:1-->
<!--T:1-->
{{GuiCommand|Name=FEM ConstraintContact|MenuLocation=FEM → Constraint contact||Workbenches=[[Fem Workbench|FEM]]|Shortcut=|SeeAlso=[[FEM_tutorial|FEM tutorial]]}}
{{GuiCommand|Name=FEM ElementFluid1D|MenuLocation=Model → Fluid section for 1D flow||Workbenches=[[Fem Workbench|FEM]]|Shortcut=|SeeAlso=[[FEM_tutorial|FEM tutorial]]}}


==Description== <!--T:2-->
==Description== <!--T:2-->
Creates a FEM constraint for contact between 2 surfaces.


==Use== <!--T:3-->
<!--T:6-->
Creates a FEM fluid section element for aerodynamic and hydraulic networks
⚫
#Click on [[Image:FEM ConstraintContact.png|32px]] or choose {{KEY| FEM}} → {{KEY|[[Image:FEM ConstraintContact.png|32px]] Constraint contact}} from the top menu.

⚫
#Select the master face.
==How to use== <!--T:3-->
#Select the slave face.

#Enter a contact stiffness.
<!--T:7-->
#Enter a friction coefficient.
⚫
#Click on [[Image:FEM ElementFluid1D.png ‎|32px]] or choose {{KEY|Model}} → {{KEY|[[Image:FEM ElementFluid1D.png ‎|32px]] Fluid section for 1D flow}} from the top menu.
#Select Fluid type: Liquid, Gas or Open Channel
#Select Section type: Pipe Manning, Pipe Inlet etc.
#Enter Section type parameters.
⚫
#Select and add edge.


==Limitations== <!--T:4-->
==Limitations== <!--T:4-->

#The contact constraint can only be applied to two faces.
<!--T:8-->
#The card only works with a 3 noded network element type. Information can be found here: http://web.mit.edu/calculix_v2.7/CalculiX/ccx_2.7/doc/ccx/node54.html


==Notes== <!--T:5-->
==Notes== <!--T:5-->
#The contact stiffness should be 10 times the young's modulus of the material for hard contact. The higher the value for contact stiffness, the harder the contact between surfaces.
#The slave face is the face which penetrates into the master face, and therefore experiences more deformation.
#The *CONTACT PAIR card is used for modeling contact in CalculiX. The constraint uses Face-to-Face penalty contact and the contact formulation is explained in detail at http://web.mit.edu/calculix_v2.7/CalculiX/ccx_2.7/doc/ccx/node112.html


<!--T:9-->
#An example of the set up of a hydraulic network can be found here: http://web.mit.edu/calculix_v2.7/CalculiX/ccx_2.7/doc/ccx/node13.html
# The *FLUID SECTION card is used to model fluid elements for 1D flow. Information on the card can be found here: http://web.mit.edu/calculix_v2.7/CalculiX/ccx_2.7/doc/ccx/node205.html

<!--T:11-->
{{Docnav|[[FEM_ElementGeometry2D|Shell plate thickness]]|[[FEM_ConstraintElectrostaticPotential|Constraint electrostatic potential]]|[[FEM_Module|FEM]]|IconL=FEM_ElementGeometry2D.png|IconC=Workbench_FEM.svg|IconR=Fem-constraint-electrostatic-potential.svg}}

<!--T:12-->
{{FEM Tools navi}}

<!--T:13-->
{{Userdocnavi}}
</translate>
</translate>
{{clear}}
{{clear}}
⚫
<languages/>

Revision as of 10:26, 11 February 2019

Other languages:

FEM ElementFluid1D

Menu location
Model → Fluid section for 1D flow
Workbenches
FEM
Default shortcut
None
Introduced in version
-
See also
FEM tutorial

Description

Creates a FEM fluid section element for aerodynamic and hydraulic networks

How to use

  1. Click on or choose Model → Fluid section for 1D flow from the top menu.
  2. Select Fluid type: Liquid, Gas or Open Channel
  3. Select Section type: Pipe Manning, Pipe Inlet etc.
  4. Enter Section type parameters.
  5. Select and add edge.

Limitations

  1. The card only works with a 3 noded network element type. Information can be found here: http://web.mit.edu/calculix_v2.7/CalculiX/ccx_2.7/doc/ccx/node54.html

Notes

  1. An example of the set up of a hydraulic network can be found here: http://web.mit.edu/calculix_v2.7/CalculiX/ccx_2.7/doc/ccx/node13.html
  2. The *FLUID SECTION card is used to model fluid elements for 1D flow. Information on the card can be found here: http://web.mit.edu/calculix_v2.7/CalculiX/ccx_2.7/doc/ccx/node205.html
FEM

Constraints

User documentation
Retrieved from "http://wiki.freecad.org/index.php?title=FEM_ElementFluid1D&oldid=417919"