well explained but there is one thing that doesn't add up. you're saying that if Nu = 1, there is no convection. this can't be mathematically correct cuz if Nu = Q_conv / Q_cond, then Nusselt is also 0 if convection is zero. could you explain this please.
Many thanks for your interesting question, you know the ratio of convection over conduction is only a physical interpretation of Nusselt and not a mathematical and exact meaning of Nusselt. By the way, in micro scale always there is motion between molecules of a fluid.
very well explained, thank you
my pleasure
well explained but there is one thing that doesn't add up. you're saying that if Nu = 1, there is no convection. this can't be mathematically correct cuz if Nu = Q_conv / Q_cond, then Nusselt is also 0 if convection is zero. could you explain this please.
Many thanks for your interesting question, you know the ratio of convection over conduction is only a physical interpretation of Nusselt and not a mathematical and exact meaning of Nusselt. By the way, in micro scale always there is motion between molecules of a fluid.
Great help