Quote:
Originally Posted by freebeard
1/24th is headed the wrong way. 1/3rd to 1/5th is best-er.
OP most recent post is still the solicitation at Permalink #29. Perhaps aerohead could suggest whether a fluid with less viscosity like rubbing alcohol or more viscosity like melted coconut oil would be better at 1/43rd scale.
|
We'd need a kinematic viscosity in order to calculate the Reynolds number,and from that determine the flow velocity to generate the critical Reynolds number based upon the scale of the model.
Texas Tech used as small as 1/24-scale in their water tunnel.
At very small scale we risk cavitation as low local pressures force a phase change in the working fluid.