CJ
nice picture, indeed so, but wanted to get to the main point of the pressure at the front acting on the wall so could then expand to pressure on the back of turbine blades pushing fwd, on back of arms when swimming, pushing fwd etc. Sorry I got a bit priggish, it isn't rare behaviour afraid.
Now if you ask a) what makes a 'good' nozzle and b) how do you know you have made a good one....don't know, tried looking for this myself some months ago co-incidentally (and failed).