High Rayleigh number convection in a long vertical tube


Shashikant S.Pawar;Jaywant H.Arakeri;


<正>We present results of turbulent convection in a long open ended vertical tube(L/d = 10) for the Rayleigh number(based on gradient) range of 5×10~4-5×10~6 and nearly constant Pr{Pr ~ 6.5). A scaling for the non dimensional heat flux,Nu ~(Ra_g.Pr)~(1/2), is observed as predicted by the mixing length model proposed by




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