The flow through any turbomachinery device is a complex phenomenon. A computational fluid dynamics (CFD) model is able to predict such complex phenomena as well as help understand the different losses occurring in the turbomachine. With recent advances in computational techniques, more and more robust CFD methodologies are being applied to different areas of fluid dynamics problems.

However, CFD modelling of flow through turbomachines is still a challenging task due to the intricate blade geometries and the wide range of turbulent structures that need to be resolved or modelled. As a result, even with the most recent advances in CFD techniques and the employment of high-performance computers, accurate modelling of flow through turbomachines is extremely difficult to obtain.

This Special Issue seeks to promote and disseminate knowledge on the various topics of CFD analysis in turbomachinery flow. This Special Issue aims to serve researchers, engineers, and scientists to help them keep abreast of new developments in this specialist field. The broad scope of the subject matter includes fluid dynamics, heat transfer, and aeromechanic technology associated with the design, analysis, modelling, and performance of turbomachinery. We especially welcome topics related to optimisation and machine learning applied to CFD analysis of turbomachinery flow. We also welcome contributions in the fields of hydro, marine, and wind energy producing devices, as well as unconventional fluid/flow applications in turbomachinery. We invite both original research and review articles to be submitted.

Potential topics include but are not limited to the following:

• General CFD analysis of turbomachines using commercial and open source codes
• CFD of gas turbines/hydro kinetic turbines
• Meshing and convergence in CFD for turbomachinery flows
• Error analysis in CFD analyses
• CFD based optimisation
• Applications in marine renewable energy and wind energy
• Applications in propellers
• Machine learning and artificial intelligence applied to CFD
• Flow visualisation from CFD analysis
• Other areas of CFD applied to turbomachinery flow