A numerical confirmation of the dual body vortex flowmeter design

In this study we demonstrate the effectiveness of adding a second bluff body as a chaos control. Numerical method involves operator splitting technique, balance tensor diffusivity (BTD), and an element-by-element conjugate gradient iterative solver. To avoid numerical instability and to satisfy the physical constrain for obtaining the lowest frequency of vortex shedding, the time step needs to be carefully selected. The simulated result shows that a second bluff body placed in the flow path can enhance the repeatability of vortex pattern and, thus, can confirm the experimental finding of Bently et al. and Okajima. (C) 2003 Elsevier Ltd. All rights reserved.