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Optimal Design of a Sheath Flow Nozzle for Detecting Biological Warfare Agents

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A biological warfare agent (BWA), one of the most hazardous weapons, can destroy overall ecosystems including human beings and threaten national security. BWAs are difficult to detect due to their colorless and odorless properties as well as their latent period. A sheath flow nozzle, which is widely used in laser detection systems for micro/nano-sized particles, focuses the flow of aerosol particles. The geometrical configuration of a sheath flow nozzle affects the flow characteristics of aerosol particles, which results in a large impact on the detecting performance. In this paper, numerical analysis on the sheath flow nozzle was conducted using ANSYS CFX 16.1 to improve detecting performance. The results of streamlines, pressure, and velocity distributions with different exit angles of the outer nozzle are graphically depicted.
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Keywords: CFD; Detecting Efficiency; Sheath Flow Nozzle

Document Type: Research Article

Affiliations: 1: Graduate School of Mechanical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea 2: The 5th R&D Institute, Agency for Defense Development, Daejeon 34060, Republic of Korea 3: School of Mechanical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea

Publication date: 2017-11-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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