Correction for Exponential Dependence of Viscosity on Temperature for Natural Convections by An Integral Method  

Oleh:

Burmeister, Louis C.

Jenis: Article from Bulletin/Magazine
Dalam koleksi: Journal of Heat Transfer vol. 125 no. 4 (Aug. 2003), page 756-759.
Topik: INTEGRAL; exponential dependence; viscosity; temperature; natural convections; integral method

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ90.7 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

It is common to correct for the effect of exponential dependence on inverse absolute temperature of the viscosity on the Nusselt number for laminar natural convection by multiplying the correlation for constant properties by a factor (µ / µw)(n) to obtain Nu = C Ra(1/4) (µ / µw)(n). That there is a sound basis for the functional form of this corrective term is newly shown by employing an integral method to obtain closed - form solutions to the laminar boundary - layer equations for the case of a vertical plate of specified temperature immersed in such a liquid. The basis for the alternative means of correction by using the correlation for constant properties with viscosity evaluated at a special reference temperature is also shown.

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