A Fast Algorithm for Time-Dependent Radiative Transport Equation Based on Integral Formulation

A Fast Algorithm for Time-Dependent Radiative Transport Equation Based on Integral Formulation

Year:    2020

Author:    Hongkai Zhao, Yimin Zhong

CSIAM Transactions on Applied Mathematics, Vol. 1 (2020), Iss. 2 : pp. 346–364

Abstract

In this work, we introduce a fast numerical algorithm to solve the time-dependent radiative transport equation (RTE). Our method uses the integral formulation of RTE and applies the treecode algorithm to reduce the computational complexity from $\mathcal{O}$($M$2+1/$d$) to $\mathcal{O}$($M$1+1/$d$log$M$), where $M$ is the number of points in the physical domain. The error analysis is presented and numerical experiments are performed to validate our algorithm.

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Journal Article Details

Publisher Name:    Global Science Press

Language:    English

DOI:    https://doi.org/10.4208/csiam-am.2020-0012

CSIAM Transactions on Applied Mathematics, Vol. 1 (2020), Iss. 2 : pp. 346–364

Published online:    2020-01

AMS Subject Headings:    Global Science Press

Copyright:    COPYRIGHT: © Global Science Press

Pages:    19

Keywords:    Radiative transport equation volume integral equation treecode algorithm.

Author Details

Hongkai Zhao

Yimin Zhong