AVL CRUISE™ M Flow is an excellent solution for modeling the cooling and lubrication circuits of the entire driveline to run thermal and energy management investigations.

AVL Approach

AVL CRUISE™ M Flow provides efficient thermal fluid circuit simulation as the thermal link between vehicle sub-systems. It describes the transfer of heat generated in the cylinders (turbines, gearboxes, batteries,... ) through solid structure, air, water and oil circuits to dedicated heat sinks i.e. heat exchangers and radiators.

AVL CRUISE™ M enables investigating and optimizing vehicle thermal and energy management in both steady and transient mode supporting the prediction of Real Driving Emissions (RDE).

The time scale of thermal energy transport is significantly larger than the one of momentum transport. Therefore flow and energy fields are obtained through a time-step based coupled solution of both equations:

  • The Incompressible Flow Network (IFN) applies the mass balance at node points and the transient or quasi-steady momentum balance in all elements including empirical pressure drop correlations.
  • The Energy Flow Network (EFN) calculates the enthalpy balance at node points and the transient 0D/1D energy balance in elements supplemented with empirical heat transfer correlations.

Benefits at a Glance

  • Detection of critical thermal conditions to prevent vital engine and driveline parts damage
  • Reduction of thermal losses and efficient (re-)use of available thermal energy
  • Fully integrated user-extendable property database with numerous solids, oils and coolant media


0.34 MB