Scale curve data

As most compressors have similar characteristics, you can enter a "generic" curve in the Curve Editor so that you can scale it to actual process conditions in a specific simulation.

Scale curve data

1. Open the Curve Editor for the Curve.

2. Enter or import a non-scaled curve.

3. Expand the General section, and select the Scaled Curve data checkbox.

   

   The tabular curve data in the Curves section is defined as scaled curve data.

4. Expand the Variables section and change the Type of your variables to one of the dimensionless UOM types.

5. Expand the Curves section and update the point data for your curves as necessary to reflect dimensionless data.

To perform scaling in the model in which you want to use a scaled curve, you can specify a condition with expression CurveType.IsScale or CurveType.Scaled = true. You can use these conditions to turn on additional variables and equations to perform the scaling, such as CurveState.x = Flow/FlowRef. The Pump model in the CWLib library contains conditions and equations that demonstrate how to use a scaled curve in a model.