Session: 7.1 - Heat and Mass Transfer in multiphase flows

Paper Number: 157904

157904 - The Role of Neutrally-Buoyant Particles in the Modulation of Rayleigh-Bénard Convection 

Abstract: 

Thermally-evolving, multiphase flows are prevalent across industrial and natural processes, such as nuclear and circulating fluidized bed reactors, desalination systems and complex macrobiological systems. Despite their societal importance, tractable models capable of accurately predicting global quantities of interest have remained elusive. This is in large part due to the complex nature of these systems and the challenge in producing high-fidelity data, either computationally or experimentally. In this work, we quantify the role of a dispersed phase in a differentially heated channel. Here, the walls are vertically oriented and held at opposing temperatures (one hot and one cold). We discuss the convective behavior of this vertically oriented Rayleigh-Bénard system, absent of particles first, then make comparisons with an analogous system seeded with insulated particles at a range of mass loading to study the turbulence convection modulation as a function of Stokes number and provide a turbulent scaling relationship as a result of this study.

Presenting Author: Lee Rosenberg Oakland University

Presenting Author Biography: Lee Rosenberg is a PhD candidate at Oakland University and a member of the Complex Fluids and Modeling Group, under the supervision of Professor Sarah Beetham. He holds a MSE in Mechanical Engineering from Oakland University and a Bachelor of Science in Applied Mathematics from the University of Colorado Denver with a focus in Numerical Analysis and Numerical Linear Algebra. He is a mechatronic software engineer at Continental Automotive Group working on electronic brake systems with a focus on hydraulic actuation and active safety monitoring. His research focus in on the simulation of multiphase flows, including bubble induced turbulence and thermally evolving multiphase systems. He is also a technical SCUBA diver and enjoys exploring shipwrecks in the great lakes and underwater cave systems.