The Journal of the Korea Contents Association (한국콘텐츠학회논문지)

The Korea Contents Association (한국콘텐츠학회)
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Particle Dispersion Model Speed Improvement and Evaluation for Quick Reaction to Pollutant Accidents

신속한 오염사고 대응을 위한 입자 분산 모형의 속도 개선 및 평가

  • 신재현 (한국건설기술연구원 국토보전연구본부 박사 후 연구원) ;
  • 성호제 (한국건설기술연구원 국토보전연구본부 전임 연구원) ;
  • 박인환 (서울과학기술대학교 건설시스템공학과 교수) ;
  • 이동섭 (한국건설기술연구원 국토보전연구본부 연구 위원)
  • Received : 2020.10.26
  • Accepted : 2020.11.29
  • Published : 2020.12.28
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Abstract

This study deals with the development and improvement of a particle dispersion model for quick response to water pollutant accidents. The developed model is based on the shear dispersion theory where vertical mixing is done by step by step mixing by vertical and molecular diffusion algorithm. For the quick response to chemical accidents, an algorithm for multi-core modeling for the particle dispersion model is applied. After the application of multi-core operation using OpenMP directives to the model, the relation for the calculation time and particle size were determined along with the number of cores used for parallel programming to determine the model time for chemical accident responses. The results showed the adequate conditions for the modeling of chemical accidents for quick response and to increase the applicability of the model.

본 연구에서는 오염물 사고에 대한 신속한 대응을 위하여 입자 분산 모형을 개발 및 개선하고 병렬 프로그램을 적용한 모의 속도 증가와 그 분석을 통하여 속도개선 결과를 평가하였다. 개발된 모형은 전단류 분산이론을 따르면서 수평 혼합 과정은 전단이송, 연직 혼합 과정은 연직배열 알고리즘을 이용한 난류 및 입자 확산을 구현하였다. 오염사고에 신속하게 대응하기 위해 모형 속도 개선을 위하여 OpenMP를 활용한 병렬 프로그래밍으로 멀티코어 적용 알고리즘을 적용하였다. 병렬 프로그래밍 적용 결과, 가상 사행수로에서 기준 소요시간 내로 모의가 가능한 입자 및 활용 코어 개수의 관계를 도출할 수 있었다. 이 연구 결과로 신속한 수질 오염사고 사고대응을 위한 적절한 모의 조건을 구성할 수 있게 되어 모형의 활용성을 증대할 수 있었다.

Keywords

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