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Biorthogonal series method for Oseen type flows

Kuhlmann, Hendrik C and Adabala, Ramachandra Rao (1993) Biorthogonal series method for Oseen type flows. In: International Journal of Engineering Science, 31 (9). pp. 1243-1258.

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Official URL: http://dx.doi.org/10.1016/0020-7225(93)90129-I


A biorthogonal series method is developed to solve Oseen type flow problems. The theory leads to a new set of eigenfunctions for a specific class of linear non-selfadjoint operators containing the biharmonic one. These eigenfunctions differ from those given earlier in the literature for the biharmonic operator. The method is applied to the problem of thermocapillary flow in a cylindrical liquid bridge of finite length with axial through flow. Flow and temperature distributions are obtained at leading order of an expansion for small surface tension Reynolds number and Prandtl number. Another related problem considered is that of cylindrical cavity flow. Solutions for both cases are presented in terms of biorthogonal series. The effect of axial through flow on velocity and temperature fields is discussed by numerical evaluation of the truncated analytical series. The presence of axial through flow not only convectively shifts the vortices induced by surface forces in the direction of the through flow, but also moves their centers toward the outer cylindrical boundary. This process can lead to significantly asymmetric flow structures.

Item Type: Journal Article
Publication: International Journal of Engineering Science
Publisher: Elsevier Science
Additional Information: Copyright of this article belongs to Elsevier Science.
Department/Centre: Division of Physical & Mathematical Sciences > Mathematics
Date Deposited: 02 Feb 2011 05:57
Last Modified: 22 Feb 2019 09:12
URI: http://eprints.iisc.ac.in/id/eprint/35351

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