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@bjonkman
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@bjonkman bjonkman commented Jan 8, 2026

Feature or improvement description
On last node (at the tip), the element size for aeroacoustics calculations was calculated as half the difference in span locations between the last two nodes. This should not be divided by 2.

Related issue, if one exists

Impacted areas of the software
AeroAcoustics only

Test results, if applicable
The AeroAcoustics regression test, IEA_LB_RWT-AeroAcoustics fails. Here are some of the failing channels:

image image image image

On last node, the element size was calculated as half the distance in span between the last two nodes. This should not be divided by 2.
@andrew-platt andrew-platt self-assigned this Jan 9, 2026
@andrew-platt andrew-platt added this to the v4.2.0 milestone Jan 9, 2026
@andrew-platt
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This has a relatively large impact on the measurements forObs1. I'm not familiar enough with this to know if this is an important change or not. @ptrbortolotti, can you give your thoughts on this? Does this better reflect real world data, or is this within the uncertainty of measurements?

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