I am solving natural circulation flow in closed loop which is assisted by nitrogen injection in hot leg to increase the flow rate of coolant in the loop. Injected nitrogen is separated before the heat sink.
I am not able to decide which parameter Grashof number or Reynolds number will decide whether the flow is laminar or turbulent. Also how can i calculate two-phase grashof number ? I get a correlation to calculated Grashof number for closed loop but it for single phase (Vijyan et al 1992)
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