Journal of the Korea Institute of Military Science and Technology (한국군사과학기술학회지)

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
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A Near Real-Time Wind Tunnel System for Studying Evaporation of Chemical Agents(HD)

준실시간 소형 풍동 시스템을 이용한 화학작용제(HD) 증발특성 연구

  • Kah, Dong-Ha (The 4th Research and Development Institute, Agency for Defense Development) ;
  • Jung, Hyunsook (The 4th Research and Development Institute, Agency for Defense Development) ;
  • Seo, Jiyun (The 4th Research and Development Institute, Agency for Defense Development) ;
  • Lee, Juno (The 4th Research and Development Institute, Agency for Defense Development) ;
  • Lee, Hae Wan (The 4th Research and Development Institute, Agency for Defense Development)
  • 가동하 (국방과학연구소 제4기술연구본부) ;
  • 정현숙 (국방과학연구소 제4기술연구본부) ;
  • 서지윤 (국방과학연구소 제4기술연구본부) ;
  • 이준오 (국방과학연구소 제4기술연구본부) ;
  • 이해완 (국방과학연구소 제4기술연구본부)
  • Received : 2018.07.26
  • Accepted : 2018.12.07
  • Published : 2019.02.05
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Abstract

Upon chemical agent release, it is of importance to study the characteristic persistence and evaporation of chemical agents from surfaces for the prediction of dispersion hazard. We have recently developed a fast and near real-time wind tunnel system proving the controlled environment(air flow, temperature, and humidity), continuously collects agent vapor and analyzes it. A thermal sorber/desorber is unnecessary to collect the vapor in the system we have developed. Instead, a tandem thermal sorber collects the vapor, which is then directly transferred to a fast gas chromatography(GC) for analysis. As a proof of concept, the evaporation of sulfur mustard agent(HD) was studied from glass, sand and concrete. The results were in an excellent agreement with those obtained from the conventional wind tunnel system.

Keywords

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Fig. 1. Schematic of a near real-time wind tunnel system

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Fig. 2. Velocity profiles in wind tunnel

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Fig. 3. Calibration curve of HD standard solution

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Fig. 4. HD concentration of glass as function of time

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Fig. 5. Photographs of HD droplet in wind tunnel as function of time

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Fig. 6. Vaporizing rate of HD from sand as function of time

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Fig. 7. HD vaporizing rate of concrete substrate as function of time

Table 1. Parameters of detector system

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