Efficient Computation of Power, Force, and Torque in BEM Scattering Calculations
Author(s)Reid, McMahon Thomas Homer; Johnson, Steven G
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We present concise, computationally efficient formulas for several quantities of interest-including absorbed and scattered power, optical force (radiation pressure), and torque-in scattering calculations performed using the boundary-element method (BEM) [also known as the method of moments (MoM)]. Our formulas compute the quantities of interest directly from the BEM surface currents with no need ever to compute the scattered electromagnetic fields. We derive our new formulas and demonstrate their effectiveness by computing power, force, and torque (PFT) in a number of example geometries. Free, open-source software implementations of our formulas are available for download online.
DepartmentMassachusetts Institute of Technology. Department of Mathematics
IEEE Transactions on Antennas and Propagation
Institute of Electrical and Electronics Engineers (IEEE)
Reid, M. T. Homer, and Steven G. Johnson. “Efficient Computation of Power, Force, and Torque in BEM Scattering Calculations.” IEEE Transactions on Antennas and Propagation 63, no. 8 (August 2015): 3588–3598.
Author's final manuscript