Reynolds number for flow over half cylinder?
i am considering air flow over half the circumference of a horizontal cylinder..which is fixed.similar to this diagram:
the air velocity is 6.67 m/s and length of rod is 200 mm with diameter 32 mm..is the formula Re = UD/v still applicable..or should i divide by two :confused:
i have another related question..
is there a way to directly calculate the thermal boundary layer thickness over this cylinder.
for laminar flow over a flat plate the thermal boundary layer thickness is
t=h * (Pr) ^ -0.333
h=5 * x * (Re)^ -0.5
h=hydrodynamic boundary layer thickness
Pr- prandtl number
is there a way to have a similar formula for cylindrical co ordinates. i think it would require changing 'x' from cartesian to cylindrical co ordinates.but iv no idea how to go about it............
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