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The proposed paper aims to present the numerical simulation of the thermal comfort for a given DaimlerChrysler truck. The starting point of this paper took into consideration the results originated in the paper: “Numerical simulation of a truck underhood flow”. The main practical application of this investigation is to evaluate the thermal comfort inside the cabin, throughout the distribution of cabin floor heat flux. Very high temperatures from some engine components such as turbine must be adequately taken care of, otherwise they may lead to high spot temperatures on the cabin floor and cause discomfort to the vehicle occupants.

The proposed paper aims to present the numerical simulation via CFD of the underhood flow for a given DaimlerChrysler truck. The main practical application of this investigation is to evaluate the air flow assessment in the underhood compartment. All the relevant aspects of the flow have been taken into account and fully 3D incompressible viscous flow simulations with turbulence modeling for steady state condition has been performed. As regards truck operation conditions, two major situations have been considered: firstly, one simulation with the truck at a standstill condition. Secondly, the movement of the truck is considered for a condition of maximum torque.