IEEE Antennas and Wireless Propagation Letters · 2015 · 12 citations · 21 references
ComputingComputational EngineeringBuilding StructuresComputational ElectromagneticsComputational PhysicsConcrete ConstructionConcrete ShieldingFinite Difference MethodsFinite Difference Time Domain AnalysisParallel Numerical MethodsShielding DesignAccuracyAccuracy-computational Cost TradeoffDispersive Material ModelingFinite Difference AnalysisFinite Difference Time Domain SimulationFinite Difference Time IntegrationRational Function Computation
Recently, the quadratic complex rational function (QCRF) function was proposed for accurate finite-difference time-domain (FDTD) dispersive modeling. First, this letter discusses two implementations of QCRF-FDTD to a zeroth-order temporal derivative term and it is observed that the numerical accuracy of the double averaging implementation is better than that of the direct implementation. Second, this work presents a fast QCRF-FDTD algorithm by employing a parallel processing algorithm. The proposed parallel QCRF-FDTD is validated in terms of the speedup fact and the computational accuracy. Finally, we analyze the shielding effectiveness of large-scale concrete structures by using our parallel QCRF-FDTD.
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