AAAR 36th Annual Conference October 16 - October 20, 2017 Raleigh Convention Center Raleigh, North Carolina, USA
Abstract View
A 2-D Numerical Study of Virtual Impactor with Ultra-low Air Flow-rates
WONYOUNG JEON, Hyunwoo Lee, Youngjin Seo, Kumoh National Institute of Technology
Abstract Number: 299 Working Group: Instrumentation and Methods
Abstract Nowadays, the threat of terrorism using biological weapons is increased and real-time detection of biological weapons became important. A virtual impactor is currently being utilized as a part of real-time detection system. This study presents preliminary 2-D numerical results of virtual impactor with ultra-low flow-rates. A commercial CFD tool is employed to optimize several important dimensions in the impactor. As the device is real-time detection system, it has to be operated 24 hrs and 365 days. Therefore, the power consumption is going to be an important design factor. The objective of this study is to design the optimized 2-D virtual impactor which will be eventually expanded into 3-D for the purpose of fabrication and also for experiments. The proposed air flow-rates is lower than 200 Liter per min (LPM) and the target cut-point is approximately 1 μm.