Dear colleagues,

We are pleased to announce the winners of the Fluids 2020 Best Paper Award. All papers published in 2020 in Fluids were considered for the award. After a thorough evaluation of the originality and significance of the papers, citations, and downloads, the three winning papers, which were nominated by the Editor-in-Chief and Associate Editor-in-Chief, have been selected.

One Review:
A Review of Topology Optimisation for Fluid-Based Problems
By Joe Alexandersen and Casper Schousboe Andreasen
Fluids 2020, 5(1), 29; 10.3390/fluids5010029

Two research articles:
On the Deterministic Prediction of Water Waves
By Marco Klein, Matthias Dudek, Günther F. Clauss, Sören Ehlers, Jasper
Behrendt, Norbert Hoffman and Miguel Onorato
Fluids 2020, 5(1), 9; 10.3390/fluids5010009

On the Effect of Block Roughness in Ogee Spillways with Flip Buckets
By Rasoul Daneshfaraz, Amir Ghaderi, Aliakbar Akhtari, Silvia Di Francesco
Fluids 2020, 5(4), 182; 10.3390/fluids5040182

Each winner (corresponding author) will receive CHF 500 and a chance to publish a paper in Fluids in 2022.

On behalf of the assessment committee, I congratulate the winners on their accomplishments. We would like to take this opportunity to thank all the nominated research groups of the above exceptional papers for their contributions to Fluids, and thank the Award Committee for voting and helping with this award.