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Numerical Approximation for Fractional Neutron Transport Equation

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  • Zhengang Zhao
  • Yunying Zheng
  • Imtiaz Ahmad

Abstract

Fractional neutron transport equation reflects the anomalous transport processes in nuclear reactor. In this paper, we will construct the fully discrete methods for this type of fractional equation with Riesz derivative, where the generalized WENO5 scheme is used in spatial direction and Runge–Kutta schemes are adopted in temporal direction. The linear stabilities of the generalized WENO5 schemes with different stages and different order ERK are discussed detailed. Numerical examples show the combinations of forward Euler/two-stage, second-order ERK and WENO5 are unstable and the three-stage, third-order ERK method with generalized WENO5 is stable and can maintain sharp transitions for discontinuous problem, and its convergence reaches fifth order for smooth boundary condition.

Suggested Citation

  • Zhengang Zhao & Yunying Zheng & Imtiaz Ahmad, 2021. "Numerical Approximation for Fractional Neutron Transport Equation," Journal of Mathematics, Hindawi, vol. 2021, pages 1-14, March.
    • Handle: RePEc:hin:jjmath:6676640
    DOI: 10.1155/2021/6676640
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