水平環状多孔質内非定常三次元自然対流のガラキン法による解析

概要

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A three-dimensional Galerkin scheme using scalar product to obtain residual equations is developed and compared with that using vector product ; the latter is proved unsuitable. In addition to the reported two-dimensional multiple solutions (1), three-dimensional solutions are obtained corresponding to different initial conditions. It is found that the three-dimensional flow cannot be obtained unless the initial perturbation is strong enough. The structure of the three-dimensional spiral flow is clarified. At the top of the annulus, there exist secondary flow cells with closed streakines of co-axial double helix similar to that observed in inclined rectangular box. This increases maximum local and overall heat transfer rates compared with those for the simple two-dimensional unicellular flow.
社団法人日本機械学会の論文
1988-04-25