modelAthmosphericFriction
Athomspheric friction
Extends from Modelica.Mechanics.Translational.Interfaces.PartialForce (Partial model of a force acting at the flange (accelerates the flange)).
Information
This model calculates the athmospheric friction force as a function of the square of the speed accoding to
f = cx*A * rho * v^2/2
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Boolean | useSupport (from PartialElementaryOneFlangeAndSupport2) | false | = true, if support flange enabled, otherwise implicitly grounded |
| Modelica.Units.SI.Density | rho | 1.2 | Mass density of air |
| Modelica.Units.SI.Area | A | 3 | Area of cross section |
| Real | cx | 0.3 | Drag coefficient (cw in German) |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Flange_b | flange (from PartialElementaryOneFlangeAndSupport2) | Flange of component | |
| Support | support (from PartialElementaryOneFlangeAndSupport2) | Support/housing of component |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| SI.Length | s (from PartialElementaryOneFlangeAndSupport2) | Distance between flange and support (= flange.s - support.s) | |
| SI.Force | f (from PartialForce) | Accelerating force acting at flange (= flange.f) | |
| Modelica.Units.SI.Velocity | v | Velocity of flange | |
| Modelica.Mechanics.Translational.Sources.QuadraticSpeedDependentForce | quadraticSpeedDependentForce |