take it easy man.. you'll be all right..
if there's anything, you tend to get stressed a lot..
you've done as much as you can.. the prof should know that.. and
the proof of concept is there already too..
btw.. you are trying to create additional eddys in the flow in
order to "mix" a few fluids? another concept the other way
around has been done by someone who created fountains.. in order to
reduce the eddys, he's "polarised" the water by putting something
akin to a huge bunch of drinking straws into a pipe so that the
water is forced into moving only in 1 direction.. the result is a
stream of water from the fountain which seems clear as glass and
transparent as hell.. the result also enables him to "illuminate"
the water like it was an optic fibre...
Well, basically right now I'm doing a few more sets of
experiments involving 600mm-long springs of varying pitches.
Basically the idea is that a spring in a tube would mix two liquids
together by imparting a rotational component to the flow - that's
what I'm investigating.
I actually finished the main bulk of the experiments using 300mm
springs over the December holidays and for much of January.... but
then, my prof was pleased enough with the results to ask me to
further my investigation into longer springs....
That in itself was pretty difficult to prepare. Had to prepare
some new equipment, new springs, and such. And some other equipment
had to be (quite literally) scrounged from junkpiles or begged from
other labs.... seriously, my lab is poorly-equipped.
And frankly speaking, much of my equipment is jury-rigged....
you really should see how I had to fix the green laser . It's
pretty much placed on top of a cardboard box and held down with
duct tape. 
Oh well.... at least I can take heart in knowing that my prof's
a sensible guy..... he doesn't expect me to do more than what he
thinks is reasonably achievable.
