FSG3132 Gas Dynamics for Internal Combustion Engines 5.0 credits
Gasdynamik för förbränningsmotorer
The course covers a broad range of topics from basic thermodynamics and fluid dynamics principles to a detailed description on compressible gas dynamics and flow instability phenomena associated with turbocharging and gas exchange processes in Internal Combustion Engines (ICE).
Complex gas exchange systems are characteristic to ICE. In modern ICE, Exhaust Gas Recirculation (EGR) systems are used. Power enhancing technologies like turbocharging will continue to play an important role in the future powertrain systems. Thus, the ICE gas exchange systems are constituted from many components, piping systems with valves and flow regulators, junctions and bends leading to a very complex 3D, intermittent, and unsteady flow. The course content includes discussions on turbulence and turbulent mixing in confined conduits, turbocharger thermodynamics, compressible flows/shocks in exhaust valves and turbomachinery, rotating flows, compressor instabilities, details on experimental and computational methods for assessment of unsteady, pulsating flows in manifolds and turbochargers. For a better understanding of the learned topics, the theoretical part is supported by examples and exercises based on computational modelling/experimental measurements for assessing gas exchange processes and aerodynamics design tools for turbochargers.