Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning - Discussion

Discussion Forum : Heat Transfer, Refrigeration and Air Conditioning - Section 1 (Q.No. 4)
4.
In free convection heat transfer transition from laminar to turbulent flow is governed by the critical value of the
Reynold's number
Grashoff's number
Reynold's number, Grashoff's number
Prandtl number, Grashoff's number
Answer: Option
Explanation:
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Discussion:
12 comments Page 2 of 2.

Sanju said:   1 decade ago
In free convection h is function of Pr number and Gr number.

In forced convection h is function of Pr number and Re number.

Sai rama prabhakar said:   1 decade ago
In free convection the two dimensionless numbers are grashof's number & prandtl number where it is replaced by reynold's number & prandtl number for forced convection.


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