If the fluid speed is V (m/s), the orifice diameter is d (m) then we can write the following dimensionless ratio Re is the Reynolds number, named after Osborne Reynolds who did systematic experiments, ...

Energy efficiency is crucial for sustainability, yet vast amounts of low-temperature waste heat remain unused in industrial ...

The tunnel operating conditions were chosen to give a Reynolds number range so that at the lowest Reynolds number the flow will be laminar (even on the tunnel walls), and at the highest Reynolds ...