Physical Properties
1. Define which physical
properties are required:
- Viscosity, density, specific heat, thermal conductivity.
2. Establish the range of
conditions and compositions under which property values will be
required, with particular regard to temperature, pressure, species.
3. Obtain physical
property values from appropriate sources, e.g. in-house data,
software database, ESDU, etc.
4. Consider
simplification of physical properties. Near-constant physical
conditions may allow property variations to be ignored.
5. Ensure that the
resulting property values and any significant dependencies can be
and are set in the CFD model.
6. Undertake sensitivity
tests, if appropriate, to address uncertainty in physical
properties.
- Uncertainty may arise from the accuracy of property data.
- Uncertainty may arise from simplifications in property data.
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