I am trying to obtain the viscosity of liquid metallic alloys using RNEMD (Muller-Plathe method).
I have a doubt about using the “units” keyword in ave/spatial fix for recording the velocity profile.
As it is given in the doc page, “the units keyword determines the meaning of the distance units used for the layer thickness delta and for origin if it is a coordinate value…”.
In the original simulation box, the units are metal. While running the simulation for viscosity measurement, I set the the units keyword to be “reduced” in the fix ave/spatial. What I understand from the above sentence as given in the doc page is: this unit keywords is just related to the box dimension and not to the other quantities. Is it OK? From the results, I feel that it is alright. Still, I want someone to suggest if it is wrong.