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Recent content by philus

  1. philus

    Rayleigh and modified rayleigh number

    Hi all, I have some doubt about the Rayleigh number: when it is computed in case of a constant wall temperature it is in the form Ra=g*beta/(nu*alpha)*(Tw-Tinf)L^3 while in case of a constant heat flux it is Ra*=g*beta/(nu*alpha)*q/k*L^4 But if I suppose only convective the heat exchange I...
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