Speaker: Professor Sinisa Krajnovic (Chalmers University of Technology, Sweden)
Time: May 31st, 2021, 16:00
Site: Room A401, School of Automotive Engineering
Inviter: Professor Wang Yiping (firstname.lastname@example.org)
The course will give an introduction in how time-dependent techniques such as Large-Eddy Simulations (LES), Detached-Eddy Simulations (DES), Partiall-Averaged Navies-Stokes (PANS) and unsteady RANS (URANS) can be used in vehicle aerodynamics. We will discuss differences between these techniques and give best practical guidelines for usage of each technique. We will show when each of the techniques could/should be used and how to use it. Second part of the course will introduce recent development in aerodynamic shape optimization. Here we will present several different ways for multi-objective aerodynamic shape optimization of vehicles. Both optimization using surrogate models and automatic optimization algorithms will be discussed.
Prof. Krajnovic is Professor of Computational Fluid Dynamics at Chalmers University of Technology. He has conducted research in automotive aerodynamics in the last 20 years, aiming at improving vehicle performance with regard to energy consumption, stability relevant to road safety and other aerodynamic aspects. The core of his research consists of development of unsteady rumerica1 techniques and their applications in bluff body aerodynamics. Large part of his work is devoted to application of turbulence scale resolving simulations and hybrid methods for various bluff-body flows and in particular flows around bodies with application in vehicle aerodynamics. His recent research interests have heavily focused on so called bridging models, which combine RANS and LES. Detached-eddy simulation, unsteady Reynolds-averaged Navier-Stokes and especially Partially-averaged Navier-Stokes are examples of these bridging models used by Prof. Krajnovic in his research. He has also interest in aerodynamic shape optimization and flow control techniques. Since 2016, Prof. Krajnovic is Director of the Area of Advance Transport at Chalmers where he is leading transport research, utilization and education at Chalmers.
School of Automotive Engineering of
Wuhan University of Technology