…This phenomenon is called free settling. The phenomenon in which larger particles sink faster than smaller particles of the same density is due to the difference in sedimentation velocity. If a particle is in a fluid and gravity, buoyancy, and the resistance force acting on the particle are balanced, the particle will sink at a constant speed in the fluid, and the speed v at this time is given by the following equation. … *Some of the terminology that refers to "sedimentation velocity" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…このような現象を自由沈降free settlingという。同じ密度の粒子間で,粒子径の大きいほうが小さい粒子より速く沈む現象は,沈降速度sedimentation velocityの差によるものである。いま粒子が流体中にあって,重力と浮力および粒子に働く抵抗力とがつり合った場合,粒子は流体中を一定速度で沈んでいくが,このときの速度vは次式で与えられる。… ※「sedimentation velocity」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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