id,summary,reporter,owner,description,type,status,priority,milestone,component,version,severity,resolution,keywords,cc 262,Implement option to calculate momentum using centroid speeds,ole,ole,"This calculation is currently part of the code balance_deep_and_shallow invoked by domain.tight_slope_limiters = True (see source:/anuga_core/source/anuga/shallow_water/shallow_water_domain.py). However, if pulled out as an independent option, we can disable the gradient-limiter for momentum altogether and thus improve the overall speed of ANUGA when this option is switched on. I understand that we may develop velocity limiters at a later point and use those to reconstruct momentum. However, this a step in that direction and will provide a further gain in computation speed. ",enhancement,closed,normal,,Efficiency and optimisation,,normal,fixed,,stephen.roberts@…