[Tobi]

Hey everybody,


does anyone know how I could get access to the db() registry inside the perfectGas class? Out of the box I guess it is not possible as this class and all inherited classes don't have any reference to the mesh object nor any other related classes. Probably it is not possible here.

[m.omair]

I have a similar question. Can we access density inside the perfectGas class?.

[olesen]

Originally Posted by Tobi

Hey everybody,
does anyone know how I could get access to the db() registry inside the perfectGas class? Out of the box I guess it is not possible as this class and all inherited classes don't have any reference to the mesh object nor any other related classes. Probably it is not possible here.

Not sure how/why it would be reasonable. If we simply view perfect-gas like any function such as sin(), cos() - we wouldn't really have any database connection for them either.

[Tobi]

Hey Mark,


yes I was checking the implementation and as you state, it is just a «stupid» function. The reason why I wanted to have access to the db() was the following:

• I developed a new humidity library (see my repository: https://github.com/shor-ty/humidityRhoThermo)
• However it is a complete new thermodynamic database and we just manipulate the density of air
• Therefore, I was thinking to implement these calculation inside an EOF

The benefit would be:

• Run-Time accessible for any solver - no need to create new solvers
• Easier maintenance of the code
• More logical implementation

However, this EOS would not be a simple function as we have to solve a transport equation for the specific humidity and do other calculations.