******************* This email originates from outside Imperial. Do not click on links and attachments unless you recognise the sender. If you trust the sender, add them to your safe senders list https://spam.ic.ac.uk/SpamConsole/Senders.aspx to disable email stamping for this address. ******************* Hi Guys. Can you help me setting up a white noise during a few steps on m simulation? On the section 3.5.5 of the user guide I found this: <FORCE TYPE="Noise"> <WHITENOISE> [VALUE] <WHITENOISE/> <!-- Optional arguments --> <UPDATEFREQ> [VALUE] <UPDATEFREQ/> <NSTEPS> [VALUE] <NSTEPS/> </FORCE> What's the meaning of those white noises? I need to specify one for each direction on three dimension problems? I need to assign that noise to a specific boundary region (a wall, for example)? Thank you. Alessandro