Journal of Applied Mathematics

  • J. Appl. Math.
  • Volume 2014, Special Issue (2014), Article ID 686873, 10 pages.

Large Scale Simulation of Hydrogen Dispersion by a Stabilized Balancing Domain Decomposition Method

Qing-He Yao and Xin Pan

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Abstract

The dispersion behaviour of leaking hydrogen in a partially open space is simulated by a balancing domain decomposition method in this work. An analogy of the Boussinesq approximation is employed to describe the connection between the flow field and the concentration field. The linear systems of Navier-Stokes equations and the convection diffusion equation are symmetrized by a pressure stabilized Lagrange-Galerkin method, and thus a balancing domain decomposition method is enabled to solve the interface problem of the domain decomposition system. Numerical results are validated by comparing with the experimental data and available numerical results. The dilution effect of ventilation is investigated, especially at the doors, where flow pattern is complicated and oscillations appear in the past research reported by other researchers. The transient behaviour of hydrogen and the process of accumulation in the partially open space are discussed, and more details are revealed by large scale computation.

Article information

Source
J. Appl. Math., Volume 2014, Special Issue (2014), Article ID 686873, 10 pages.

Dates
First available in Project Euclid: 1 October 2014

Permanent link to this document
https://projecteuclid.org/euclid.jam/1412178023

Digital Object Identifier
doi:10.1155/2014/686873

Citation

Yao, Qing-He; Pan, Xin. Large Scale Simulation of Hydrogen Dispersion by a Stabilized Balancing Domain Decomposition Method. J. Appl. Math. 2014, Special Issue (2014), Article ID 686873, 10 pages. doi:10.1155/2014/686873. https://projecteuclid.org/euclid.jam/1412178023


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