翼面および曲面の圧力降下を利用したエアレータの開発

概要

論文の詳細を見る
The surface pressure at a wing surface and a curved surface moving in a fluid becomes a negative pressure according to the Bernouilli's theorem. We developed (two different types of) lower-horsepower high-efficiency apparatus having a simple mechanism capable of absorbing, between 2 fluids, one of the fluids in a large volume and mixing and dispersing it into the other fluid, by utilizing that principle. The apparatuses are aerators of cylindrical type having either a hollow rotary vane or a hollow curved-face protrusion, and capable of controlling flow rate through a control of the number of revolutions respectively. As a result of a test run, these aerators proved to be capable of mixing and dispersing a large volume of air efficiently with a small horsepower, enabling putting to practical use and commercialization. To compare the two types with each other, there is no difference in pressure drop between the two, while the latter type (with a hollow curved-face protrusion) is superior in manufacture and can be manufactured easily even with FRP material. These apparatuses greatly contribute, as environmental equipment, to cleaning of water quality in rivers, lakes and marshes, dams, sea coastal areas, etc., as well as bubbling of pollutants and improvement of dissolved oxygen content in closed circulation type shore breeding tank.
八代工業高等専門学校の論文
2004-03-01