Modeling Capillary Action Through Tube with Internal Rod

Carson N. Davis, Elena M. Lostoski, Isaac J. Sasser, Jonathan T. Su PhD Department of Physics and Engineering Elon University, Elon, NC 27244

When liquid comes into contact with a very small diameter capillary tube, capillary flow results.  This flow is a consequence of the difference in interactions between the molecules of liquid and wall material and the liquid molecules with each other. Capillary tubes have a variety of applications. One such application is microinjection, in which special glass capillaries containing a single glass fiber running along the interior are used. While existing equations can be used to model the flow of liquid through a cylindrical capillary tube, these equations fail to adequately describe the flow of liquid through a tube with a fiber. We have developed a theoretical equation which describes flow in a hollow glass cylinder with a fiber.  In addition, we have conducted experiments on the flow of water in capillaries with an internal fiber and used our experiments to develop an empirical equation (1) to evaluate our results. This will contribute to general scientific knowledge of capillary action as well as facilitating practical applications of capillary action in tubes with internal rods.

 y = A*B*Exp((-B*x)+C)   (1)

Additional Abstract Information

Presenter: Carson Davis

Institution: Elon University

Type: Poster

Subject: Engineering

Status: Approved

Time and Location

Session: Poster 6
Date/Time: Tue 2:00pm-3:00pm
Session Number: 4595