Discussion Overview
The discussion revolves around finding thermodynamic properties of gases, specifically the kinematic and absolute viscosity of air at high pressure (330 bar) and a temperature of approximately 300 Kelvin. Participants share resources and methods for obtaining this data.
Discussion Character
- Technical explanation
- Exploratory
Main Points Raised
- One participant inquires about sources for thermodynamic properties of gases at high pressure, specifically kinematic viscosity of air.
- Another participant notes that different aerospace companies have their own versions of air tables, which can vary significantly.
- A link to the NIST webbook is provided as a potential resource for the required data.
- A repeated inquiry for the source of a viscosity value leads to a mention of the NIST REFPROP program, which is noted to cost $200.
- A participant shares their findings using ASPEN software, providing specific values for dynamic and kinematic viscosity at the specified conditions.
Areas of Agreement / Disagreement
Participants do not reach a consensus on a single source for the viscosity data, as multiple resources and methods are suggested, indicating a variety of approaches and potential discrepancies in values.
Contextual Notes
There are limitations regarding the assumptions made about the gas properties, as well as potential variations in data from different sources, which are not resolved in the discussion.
Who May Find This Useful
This discussion may be useful for researchers or engineers looking for methods to obtain thermodynamic properties of gases at high pressures, particularly in aerospace or related fields.