Abstract
The fluid dynamics of recirculation flow induced by a jet stream was investigated theoretically in a two-dimensional channel, deriving both the recirculation flow rate and turbulence intensities generated by the jet stream, these being the main factors for mixing of fluid. In the authors'' measurements previously reported, it was shown that the turbulence was highly anisotropic in the recirculation zone. Therefore, an advanced theory was proposed in this paper, in which high anisotropy of turbulence in the recirculation zone has been considered. Then, it became possible to derive the recirculation flow rate and turbulence intensities theoretically in the whole recirculation zone. The present theoretical results could explain fairly well the tendency of recirculation flow rate and turbulence intensities correlated with the similitude parameter (Curtet number).
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