Due to recent bot attacks we have changed the sign-up process. If you want to participate in our forum please send a message via our contact form. › Forums › OpenLB › General Topics › Charged gas in neutral gas › Re: Charged gas in neutral gas January 2, 2019 at 8:49 am #2986 mathiasKeymaster You may change any source file – that is the idea of sharing open source code. Best Mathias