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matthorr
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Posts: 87

6.1d Oct 15, 2015 2:26:45 GMT

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Post by matthorr on Oct 15, 2015 2:26:45 GMT

"At what value of Δt does the magnitude of the σ-root from the largest magnitude λ-root become equal to that from the smallest magnitude λ-root for Trapezoidal time marching for the given space mesh?"

It looks to me like this only happens at h = 0. Anyone get another answer?

matthorr Administrator Posts: 87	6.1d Oct 15, 2015 22:43:35 GMT Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by matthorr on Oct 15, 2015 22:43:35 GMT Tim figured out the answer. If you set \(\sigma_1 = \sigma_M\) you will get the trivial answer \(h=0\). But, if you set \(\sigma_1 = -\sigma_M\), you will get the right answer. \[h = \frac{2}{\sqrt{\lambda_1\lambda_M}} = 0.008 \]
	Last Edit: Oct 15, 2015 22:47:36 GMT by matthorr

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Post by matthorr on Oct 15, 2015 2:26:45 GMT

Post by matthorr on Oct 15, 2015 22:43:35 GMT

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