EXPERIMENTAL STUDIES OF TURBULENT TWO-PHASE HEAT TRANSFER: THE ROLE OF INTERFACIAL TRANSPORT

Open Access
Author:
Cen, Dongru
Area of Honors:
Mechanical Engineering
Degree:
Bachelor of Science
Document Type:
Thesis
Thesis Supervisors:
  • Rui Ni, Thesis Supervisor
  • Daniel Cortes, Honors Advisor
Keywords:
  • multiphase
  • fluid
Abstract:
Two-phase fluid interface occur in many natural environments as well as scientific applications in the form of bubbles and liquid. Although there are many theoretical studies and assumptions, experimental data does not yet exist, upon which the connection among different scales of two-phase interface in turbulent flow can build. Scales for different scenario can vary by thousands, from pipe flow for fluid transport to ocean flow for ships. Moreover, the relationship among different scales are not simply linear nor static. The purpose of this research is to collect sufficient amount of data in two-phase turbulent flow interfaces, to support and build simulations in the future. In order to obtain the data meeting expectations, a vertical water tunnel is set up for observations with six fast-speed cameras from distinct angles. A series of setup including jet arrays, water pumps, and bubble injectors, provide the experimental environments for turbulence and two-phase fluid phenomenon to occur, whereas the six fast-speed cameras capture images from distinct angles and provide data, after which the provided data will be analyzed. The results from analyzes show that the breakage and deformation of bubbles actually do not always occur as expectations and have many other factors which take further considerations, and that experimental results are definitely meaningful and needed to provide valid theories.