Development of surrogate model using CFD and deep neural networks to optimize gas detector layout

Kyeongwoo Jeon, Seeyub Yang, Dongju Kang, Jonggeol Na, Won Bo Lee

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


To reduce damage arising from accidents in chemical processing plants, detection of the incident must be rapid to mitigate the danger. In the case of the gas leaks, detectors are critical. To improve efficiency, leak detectors must be installed at locations after considering various factors like the characteristics of the workspace, processes involved, and potential consequences of the accidents. Thus, the consequences of potential accidents must be simulated. Among various approaches, computational fluid dynamics (CFD) is the most powerful tool to determine the consequences of gas leaks in industrial plants. However, the computational cost of CFD is large, making it prohibitively difficult and expensive to simulate many scenarios. Thus, a deep-neural-network-based surrogate model has been designed to mimic FLACS (FLame ACceleration Simulator), one of the most important programs in the modeling of gas leaks. Using the simulated results of a proposed surrogate model, a sensor allocation optimization problem was solved using mixed integer linear programming (MILP). The optimal solutions produced by the proposed surrogate model and FLACS were compared to verify the efficacy of the proposed surrogate model.

Original languageEnglish
Pages (from-to)325-332
Number of pages8
JournalKorean Journal of Chemical Engineering
Issue number3
StatePublished - 1 Mar 2019

Bibliographical note

Funding Information:
This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20162220100030).

Publisher Copyright:
© 2019, The Korean Institute of Chemical Engineers.


  • Artificial Neural Network
  • Computational Fluid Dynamics
  • Gas Detector Allocation
  • Milp
  • Optimization
  • Surrogate Model


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