Virtual Vehicle

Thermo & Fluid Dynamics

Thermo & Fluid Dynamics

The area "Thermo & Fluid Dynamics" adopts a holistic view of the thermal and fluid issues in and around the "vehicle" system. The simulation and validation of thermodynamic processes leads to a reduction of energy consumption, lower emissions and cost efficiency in vehicle development. The general procedure in this area is to create different sub-models (e.g. flow and heat transfer models) and then couple them with each other so as to merge the individual parts into a comprehensive numerical model. For future mobility concepts with increased electrification, the thermodynamic focus will shift from the engine to the thermal conditioning of the battery, electric motor, power electronics, and, in particular, the interior of the cabin. The co-existence of simulation and experimental testing with a coordinated data exchange between these two worlds is essential for the research work.

The work of the area Thermo & Fluid Dynamics is divided into four areas:

  • Aerodynamics & 3D Simulation.
  • Thermal Management & 1D Simulation
  • Mobile Air Conditioning
  • Internal Combustion Concepts

The group "Testing and Validation" supports the implementation of all four topics mentioned above.





Aerodynamics & 3D Simulation

The area "Aerodynamics & 3D simulation" deals primarily with the reduction of fuel consumption and pollutant emissions influenced by the aerodynamic resistance of vehicles. For this purpose, the flow around and through the vehicle (e.g. the engine compartment) is analyzed and optimized. Furthermore, the air lift forces and their effect on the driving stability are examined. The aim of this work area is to steadily expand the aerodynamic skills in order to process the varied range of tasks involved in vehicle aerodynamics. With the area Aeroacoustics, another topic was launched in 2012...Further Information

Thermal Management & 1D-Simulation

"Thermal management" of a vehicle involves the thermodynamic view of the provision of power, as well as the regulation and control of the energy flow. Harmonizing the conflicting goals of thermal comfort in the passenger compartment on the one hand, and the requirements on the drive concept on the other hand, represents a major challenge. Working on fast, yet accurate simulation models for thermal management is one important aspect of research in this area....Further Information

Mobile Air Conditioning

The area "Mobile Air Conditioning” deals with the development of models and methods in the field of automotive air conditioning, with two primary areas of focus: the simulation and optimization of conventional coolant cycles and their associated reduction in fuel consumption; and the investigation of multi-circuit systems for battery cooling and heat pump systems for efficient heating of hybrid and electric vehicles...Further Information

Internal Combustion Concepts

The area Internal Combustion Concepts (ICC) focuses on research into developing innovative combustion concepts for car and truck drive systems by optimizing the combustion-influencing parameters under widely varying basic requirements. The approaches include engine modifications (e.g.  the reduction of raw engine emissions through further development of diesel combustion process under the basic condition of an efficient air flow system), as well as measures outside the engine (e.g. basic developments for exhaust gas treatment, in particular of SCR (Selective Catalytic Reduction)-based systems). Further research topics include the use of simulation to support the development of an operating strategy for both an intake air management and an integrated multi-dimensional development of hybrid drive systems for cars. The research activities of the ICC Working Group are conducted in close cooperation with the Institute for Internal Combustion Engines and Thermodynamics of TU Graz....Further Information

Testing & Validation

The working group "Testing and Validation" performs demanding measurement tasks across all fields of the area Thermo & Fluid Dynamics, both within the K2-Funding program and as a service provider for external clients. For special measuring tasks, a miniaturized, variably applicable and autonomous data acquisition system (ViFDAQ) has been developed...Further Information