[clrsgfn]

Hi everyone

As a test, I'm simulating a basic vertical cylinder, with uniform normal water flow at entrance and zero averaged pressure at outlet. Reynolds number is ~2000

- When buyoancy is off, by calculating total pressure difference between inlet and outlet I get losses that corresponds to what can be expected from theory

- when buoyancy is on : computing losses by total pressure difference gives a very different value (*20 !). Computing losses by difference of (abs pressure+cinetic energy) gives non physical results (negative losses...)

I've checked hydrostatic pressure (abs. pressure - ref. pressure - pressure) and this is ok...

what's going on ? and how do I compute losses in case of buoyancy ?

thank you all in advance !