重力流特論
Special Topics on the flow of gravity currents and intrusions

授課老師：陳發林教授
授課時數：3小時
學分數：3

課程概要
Gravity currents occur whenever fluid of one density flows primarily horizontally into
fluid of a different density. Many such situations arise in both industrial and natural settings, e.g., discharge of pollutants into rivers and lakes, atmospheric winds, submarine wakes in oceans, etc. The typical current propagates either above (or below) an impermeable boundary. When the ambient is stratified, a current can propagate inside the ambient fluid about the plane of neutral buoyancy. The latter case is called an intrusion. The fundamentals of these flows are fairly well understood (see reference [1]). However, in nature and practical applications, various complications show up. Therefore, the modelling and simulation of the flow-field of the gravity current (intrusion) phenomena is on the frontier of fluid mechanics research, with numerous papers being published every year in top research journals concerning novel extensions, verifications, and applications of the body of knowledge. The objective of the proposed course is to introduce the students to some special and focused topics of recent research, such as: non-Boussinesq systems, non-Newtonian viscous currents, propagation in non-rectangular channels. The course material is based on the book [1] plus journal papers (with emphasis on the latter). The student
will choose one topic, and will be requested to read and understand the material (with
the guidance and support of the lecturer), and to do a small project that will prove his
command of the topic.

References
[1] M. Ungarish: An introduction to gravity currents and intrusions. CRC Taylor and
Francis Press, 2009. (see http://www.cs.technion.ac.il/_unga/course )
[2] Journal papers.