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Re-ordered interpolation and convolution for faster staggered-grid processing
Re-ordered interpolation and convolution for faster staggered-grid processing
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机译:重新排序的插值和卷积,以实现更快的交错网格处理
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摘要
Improved finite-difference staggered grid wave propagation systems and methods. One illustrative computer-based wave field simulation method includes: applying at least one signal to a grid of model cells forming a model space, each model cell having stress values associated with stress nodes and velocity values associated with velocity nodes staggered from the stress nodes; and propagating the at least one signal as a wave into the model space by alternately updating the stress values and the velocity values to obtain a time-dependent wave field associated with the at least one signal. The stress value updating includes, for each model cell: determining spatial derivatives of the velocity values for the model cell; interpolating the spatial derivatives to multiple stress nodes within the model cell; and, for each stress node within the model cell, combining the spatial derivatives associated with that stress node to update at least one stress value associated with that stress node.
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