The Weissenberg Effect: An Introduction

In 1947, Karl Weissenberg published a paper discussing the ability of some fluids to climb a spinning rod. This phenomena, commonly referred to as the “Weissenberg Effect,“ has an elusive reasoning that requires at least a basic understanding of fluid characteristics and behaviors. This video, created for an extra credit assignment for University of Tennessee Chemical Engineering student Christopher Neal’s Fluid Flow and Heat Transfer class, discusses those basic fluid behaviors and seeks to describe the way that pseudoplastics conglomerate around and climb a spinning rod exposed to rotational shearing.