Monitoring the Rotor Force

To assess how the solution varies with time, you can monitor the fluid loads as the simulation runs. Additionally, you can monitor the displacement at a point on the blade.

To monitor the displacement at the tip of blade 1 towards the leading edge, create a point probe:

Right-click the Derived Parts node and select New > Probe > Point.
In the Create Point Probe dialog select No Displayer, then click Create and Close.
Rename Derived Parts > Point to Blade LE.

Select Blade LE and set the following properties:


Property	Value
Parts	Regions > Blade 1 > Boundaries > Blade 1
Point	[1.9981, 0.024606, 0.0]
Coordinate System	Laboratory
Follow Motion	Enabled

Right-click the Reports node and select New > User > Maximum.
Rename the Reports > Maximum 1 node to LE Displacement.

Select LE Displacement and set the following properties:


Property
Field Function	Co-Simulations > Co-Simulation: Displacement > Magnitude
Parts	Derived Parts > Blade LE
Smooth Values	Enabled

To monitor the forces:

Right-click the Reports node and select New > Flow/Energy > Force.
Rename the Force 1 report to Rotor Force.

Select Rotor Force and set the following properties:


Property	Value
Direction	[0.0, 0.0, 1.0]
Parts	Regions > Blade 1 > Boundaries > Blade 1 Regions > Blade 2 > Boundaries > Blade 2 Regions > Blade 3 > Boundaries > Blade 3 Regions > Blade 4 > Boundaries > Blade 4

Create another force report and name it Blade 1 Force.

Select the Blade 1 Force report and set the following properties:


Property	Value
Direction	[0.0, 0.0, 1.0]
Parts	Regions > Blade 1 > Boundaries > Blade 1

Right-click the Report node and select New > User > Expression.

Select the Expression 1 report and set the following properties:


Property	Value
Definition	${Azimuth Angle}
Dimensions	Angle
Units	deg

Rename the Expression 1 report to Azimuth Angle.
Multi-select the LE Displacement, Rotor Force, and Blade 1 Force reports.
Right-click one of the selected reports and select Create Monitor and Plot from Report.
In the Create Plot From Reports... dialog, select Multiple Plots (one per report).
Simcenter STAR-CCM+ adds plots of the Rotor Force Monitor and the Blade 1 Force against physical time under the Plots node.
Right-click the Azimuth Angle report and select Create Monitor from Report.

By default the Blade 1 Force and LE Displacement plots are plotted against time. To plot against the Azimuth Angle, you edit the properties of the plot nodes.

Multi-select the Plots > Blade 1 Force Monitor Plot and LE Displacement Monitor Plot and set the following properties:


Property	Value
X-Axis Monitor	Azimuth Angle Monitor
X-Axis Monitor Units	deg

Save the simulation.