Out-of-Core Solver Based DDM for Solving Large Airborne Array
Keywords:
Domain decomposition method, higherorder MoM, integral equation, out-of-coreAbstract
In this paper, we present a new methodology for an overlapping domain decomposition by using higher-order MoM and out-of-core solver (HO-OCDDM) for analyzing large electromagnetic (EM) problems. This paper proposes two main novelties. First, the required number of meshes is decreased with the application of new higher-order basis function in the discretization of integral equation (IE). As a consequence, the number of unknowns for large EM problems can be reduced. Second, a parallel out-of-core solver is presented in this paper, which can accelerate the matrix filling and solving process without loss of accuracy. The out-ofcore solver breaks the limitation of computer RAM and can be efficiently implemented in domain decomposition method (DDM).
Downloads
References
R. F. Harrington, Field Computations by Moment Methods. Macmillan, New York, 1968.
L. Yin, J. Wang, and W. Hong, “A novel algorithm based on the domain-decomposition method for the full-wave analysis of 3D electromagnetic problems,” IEEE Trans. Microw. Theory Tech., vol. 50, no. 8, pp. 2011-2017, 2002.
Z. Lou and J. M. Jin, “A novel dual-field timedomain finite-element domain-decomposition method for computational electromagnetics,” IEEE Trans. Antennas Propagat., vol. 54, no. 6, pp. 1850-1862, 2006.
Z. H. Lai, J. F. Kiang, and R. Mittra, “A domain decomposition finite difference time domain (FDTD) method for scattering problem from very large rough surfaces,” IEEE Trans. Antennas Propagat., vol. 63, no. 10, pp. 4468-4476, 2015.
W. D. Li, W. Hong, and H. X. Zhou, “Integral equation-based overlapped domain decomposition method for the analysis of electromagnetic scattering of 3D conducting objects,” Microwave and Optical Technology Letters, vol. 49, no. 2, pp. 265-274, 2007.
S. M. Rao, “A true domain decomposition procedure based on method of moments to handle electrically large bodies,” IEEE Trans. Antennas Propagat., vol. 60, no. 9, pp. 4233-4238, 2012.
X. C. Wang, Z. Peng, and J. F. Lee, “Multisolver domain decomposition method for modeling EMC effects of multiple antennas on a large air platform,” IEEE Trans. Electromagn. Compat., vol. 54, no. 2, pp. 375-388, 2012.
Y. Zhang, R. A. van ce Geijn, M. C. Taylor, and T. K. Sarkar, “Parallel MoM using higher order basis function and PLAPACK in-core and out-of-core solvers for challenging EM simulations,” IEEE Antennas Propagat. Magazine, vol. 51, no. 5, pp. 42-60, 2009.
Y. Zhang and T. K. Sarkar, Parallel Solution of Integral Equation Based EM Problems in the Frequency Domain. Hoboken, Hoboken NJ, USA: Wiley, 2009.
G. Mumcu, K. Sertel, and J. Volakis, “Surface integral equation solution for modeling 3-D uniaxial media using closed-Form dyadic Green’s functions,” IEEE Trans. Antennas Propagat., vol. 56, no.8, pp. 2381-2388, 2008.
W. D. Li, W. Hong, and H. X. Zhou, “An IE-ODDMMLFMA scheme with DILU preconditioner for analysis of electromagnetic scattering from large complex objects,” IEEE Trans. Antennas Propagat., vol. 56, no. 5, pp. 1368-1380, 2008.
