助走通路と出口通路を有するディフューザの流れおよび性能 : 直管および曲がりディフューザ
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概要
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The flow inside straight and curved diffusers, both with inlets perpendicular or oblique to the diffuser axis, approaching channels (ducts) having positive or negative incidence effect, and as well as non-diverging exit channels (ducts), was studied by means of numerical calculations and air-flow experiments. It was clarified that the efficiencies of straight and curved diffusers, defined as the ratios of experimental pressurerise to the computed pressurerise, exhibited different characteristics. The efficiencies of straight diffusers with oblique inlets exhibited higher values in the cases of zero to negative incidences than those with perpendicular inlets. On the contrary, the efficiencies of curved diffusers with oblique inlets exhibited lower values for all cases presently investigated than those with perpendicular inlets. These differences seem to be attributed to the complex effects of diffuser curvature, inclination of inlet, and incidence.
- 一般社団法人日本機械学会の論文
- 1995-04-25