Quote:
Originally posted by Alchemy
I
By the by, Reynolds number is equal to linear velocity multiplied by channel diameter multiplied by density, all divided by viscosity. So to get turbulent flow by increasing flow only, you'd have to increase flow rate a hundred times.
Re = V * D * rho / mu
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As I know Reynolds number is v*d/kinematic viscosity
v.... velocity [m/s]
d... diameter [m]
kinematic viscosity [m2/s]
if the chanell isn't round you have to take the equivalent hidraulic diameter d' = 4*A/C
A... cross area [m2]
P... circumference [m]
so for bb2k rectangular chanell d'=2ab/(a+b)
So you can see that narrow rectangular chanell isn't realy too good for introducing turbolence round chanell is much better.
Also to manny channells (to big cross area) reduce water velocity
and again lower Reynolds. So in your case the flow would be lamilar IF the fins would be long and that kind of design. But with central nozzle and short paths I realy don't think that there would be lamilar flow in that kind of block