Researchers at Laboratory for Hydraulic Machines (LVTS) conducted an experimental and numerical study of the dynamics of laminar flow of liquid over the edge of a triangular channel. The results of the research are published in a scientific journal Ain Shams Engineering Journal (IF=6).
As part of this study, they developed a computational fluid dynamics model to investigate subcritical laminar free overfall in smooth horizontal channels with a rectangular isosceles triangular cross-section. Similar flow dynamics occur in industrial processes involving the transport of molten substances or other highly viscous liquids, such as aluminosilicate oxides for the production of mineral wool or cement, slags, polymers, certain metallic alloys, etc.
The result of the study is a model of the free surface of the flowing viscous fluid and the associated velocity fields in the cross-section of the triangular channel. This model enables non-invasive optical measurement of liquid flow in real time, which is very important especially for high-temperature melts, where the range of measurement methods is very limited.