Preconditioning the Helmholtz equation via row-projections
| Title | Preconditioning the Helmholtz equation via row-projections |
| Publication Type | Conference |
| Year of Publication | 2012 |
| Authors | Tristan van Leeuwen, Dan Gordon, Rachel Gordon, Felix J. Herrmann |
| Conference Name | EAGE Annual Conference Proceedings |
| Month | 06 |
| Keywords | EAGE, Helmholtz equation, precondition |
| Abstract | 3D frequency-domain full waveform inversion relies on being able to efficiently solve the 3D Helmholtz equation. Iterative methods require sophisticated preconditioners because the Helmholtz matrix is typically indefinite. We review a preconditioning technique that is based on row-projections. Notable advantages of this preconditioner over existing ones are that it has low algorithmic complexity, is easily parallelizable and extendable to time-harmonic vector equations. |
| URL | https://slim.gatech.edu/Publications/Public/Conferences/EAGE/2012/vanleeuwen2012EAGEcarpcg/vanleeuwen2012EAGEcarpcg.pdf |
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| Citation Key | vanleeuwen2012EAGEcarpcg |