Miscellaneous: Engineering units


This feature allows the user to define an engineering unit. This can be an SI unit or any other unit that is required for your model. As the conversion to and from SI units must always be added, consistency in the equations can always be ensured.

Explanation of the editor

A new unit is defined in the “Miscellaneous” section of MOSAICmodeling as shown below in Figure 1. The editor might look confusing at first, but with the details and explanation provided in Table 1, the definition of new units should be fairly easy.

Figure 1: Editor of the engineering unit with the unit for molar volume loaded as example.
FileFilename of your engineering unit once you have saved or loaded it
Unit identifierShort form of the unit (usually consisting of the symbols used for the unit)
Unit nameName of the unit spelled out
is relativeCheck here if the unit is to be used for relative dimensions, e.g., a temperature difference in °C is equal to the difference in K
Dimension nameLength, time, temperature, etc.
Unit descriptionLonger explanation of what this unit is used for
Dimension descriptionLonger explanation of what the dimension of this unit is
Dimension ExponentsAdapt these units to match its definition. If the unit only consists of integer variables, only the numerator is required. For units with fractions, e.g., the F factor in distillation with the unit Pa\textsuperscript{0.5}, the denominator is required
Load UnitLoad the definition of a certain unit to speed up definitions of new units
Load DimensionLoad the definition of a certain dimension to speed up definitions of new units
Conversion to SIDefines the conversion equation from the given unit to the SI unit
Conversion from SIDefines the conversion equation from the SI unit to the given unit
Table 1: Elements of the unit editor.