APPLICATION OF GDQ METHOD FOR THE STUDY OF NATURAL CONVECTION IN HORIZONTAL ECCENTRIC ANNULI

A generalized differential-integral quadrature (GDQ) discretization technique developed by one of the authors was used to solve a natural convection problem in a body-fit coordinate system in their primitive variables form. A special treatment of the boundary conditions to satisfy the continuity and momentum equations along the boundaries with the implementation of the GDQ method was investigated. Comparisons with the experimental and numerical results of other investigators are presented and discussed. In contrast with the existing published results, this highly accurate method was able to reveal extremely weak net circulation around the inner eccentric cylinder that was not found previously by other investigators. This net circulation has its maximum value when the inclination angle of eccentricity is in the horizontal position.

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