Reply To: Simulation of a Rover on Titan (Atmosphere and internal Pressure issues)

[Rob]

Rather than using a species model I'd just work out the density & viscosity at the relevant pressure & temperature and input that as a single species. Unless the atmospheric composition is changing you're wasting cpu time solving species equations for no reason.
To set pressures etc elsewhere, you want Patch. To set the materials by zone, you do this via the Cell Zone condition so need the two (or more) zones to have recognisable labels (Named Selections). The mesh sections don't appear to be connected, is this intentional?