二次元平面エアカーテン噴流の研究 : 第1報,オープンショーケースのエアカーテン性能評価への応用

概要

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Air-curtain efficiency plays an important role in energy-saving in refrigerated, open display cabinets. The fluid dynamic behavior of the air curtain was studied in order to provide high thermal insulation performance. But it is difficult to analyze the aerodynamic structure, because the flow is affected by shelves, and the air curtain consists of two or three layers, whose initial velocities and temperatures are different from each other. We can predict the behavior of the air curtain flow by means of computer simulation. The velocity and temperature along the air curtain were calculated by the finite difference method with our newly proposed flow modeling, which include buoyancy and shelf models. The flow is treated as a 2-D turbulent boundary layer. Further, we obtained a factor which can estimate the air-curtain efficiency, based on computer simulation results. These predicted results agree well with the experimental results.
社団法人日本機械学会の論文
1986-07-25