Neko_2021_jan_to_aug_tier_2.zip ❲HD × 4K❳

Another potential match in the 2021 timeframe, though focused on AI rather than CFD, is:

Based on your request, the most relevant scientific paper referencing "Neko" from 2021 is: Neko_2021_Jan_to_Aug_tier_2.zip

Describes Neko, a high-order spectral element flow solver framework. Another potential match in the 2021 timeframe, though

(Published in ACM conference, 2021).