Padmanabha, D and Nair, BG and Ramachandran, A (1970) Effect of vertical vibration on mass transfer from spheres. In: Indian Journal of Technology, 8 (7). pp. 243-247.
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Mass transfer rates of sublimation of naphthalene in air from spheres subjected to vertical vibration were detd. for the following ranges of variables: amplitude, 13/32-7/8 in.; frequency, 180-600 cycles/min; and sphere diams., 1.0, 1.5, and 2.0 in. For values of vibrational Reynolds no. >200, vibration increases the values of the mass transfer considerably and a value as high as 7 times the free convection value is obtained. The mass transfer coeff. was correlated with the vibrational variables by the following dimensionless equations: NSh = 0.63(NRe)v0.64(a/d)0.63 and (hv/h0) = 1.15 [(NRe)v0.64(a/d)0.63/(NSc)1/3 (NGr)0.25]0.91, where N Sh, (NRe)u, N Sc and NGr are Sherwood no., vibrational Reynolds no., Schmidt no., and Grashof no., resp.; a is vibration amplitude; d is the sphere diam.; and hv and h0 are the mass transfer coeffs. with and without vibration, resp.
| Item Type: | Journal Article |
|---|---|
| Publication: | Indian Journal of Technology |
| Publisher: | American Chemical Society |
| Additional Information: | The Copyright belongs to American Chemical Society. |
| Department/Centre: | Division of Mechanical Sciences > Mechanical Engineering |
| Date Deposited: | 07 Apr 2006 |
| Last Modified: | 27 Aug 2008 11:50 |
| URI: | http://eprints.iisc.ac.in/id/eprint/5987 |
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