“…For anomalous transport, it has been shown that fractional ordinary/partial differential equations FODEs/FPDEs are the most tractable models that rigorously code memory effects, self-similar structures, and power-law distributions [26,34,15,24,27]. In addition to finite difference and higher-order compact methods [20,25,33,9,5,39,3,16,38,40], a great progress has been made on developing finite-element methods [23,10,28] and spectral/spectral-element methods [31,37,36,35,4,6,42,22,43,14,41,32,19,12] to obtain higher accuracy for FODEs/FPDEs.…”