National Institute of Advanced Industrial Science and Technology (AIST) This page is a page of the former research institute. We stopped updating on March 31.2001.
E-mail to webmaster (Japanese) E-mail to webmaster (English)

Measurement of Viscosity of Pressurized Liquid using Falling Ball Method
落球法による高圧液体粘度の測定

The Spherical Object falling in High Viscous Liquid is used to know the Viscosity by the measurement on the Falling Speed. A Falling Ball Viscometer using Ruby ball, 1 to 3 mm in Diameter, is developed and engaged in the Viscosity Measurement of Pressurized Liquid up to 500 MPa.

　球体を液体中で落下させると、粘度が高い場合はその落下速度から 液体の粘度が分かる。圧力500ＭＰａまでの液体について，直径約１〜３mmのルビー球を 落下させる落球粘度計を開発し、粘度を測定する研究が行われた。