Emerging CFD Simulation Technologies for eVTOL Aerodynamics, Fluid Management, and Powertrain Optimization

This paper explores advanced CFD simulation technologies tailored to address design and operational challenges in autonomous eVTOL aircraft. Tools such as AVL's PreonLab and FIRE M are highlighted for their contributions to enhancing aerodynamics, fluid management, and powertrain optimization. PreonLab employs a meshless particle-based approach ideal for highly dynamic fluid flow applications, including gearbox oil distribution, electric motor cooling, water landing and soiling simulations. Meanwhile, FIRE M offers aerodynamics simulation solution based on a proprietary immersed boundary method implementation (Embedded Body Method), virtually eliminating the need for CAD clean-up and manual meshing. These technologies support the eVTOL industry's goals for electrification, sustainability, and operational efficiency, accelerating the deployment of safe and effective urban air mobility solutions.