The electric mobility is growing year by year becoming the alternative to the traditional transport. In this window, also the major automotive companies of luxury cars, as Rimac Automobili, are moving to conquer this new market share. To ensure the best performance, the C_Two battery pack has to provide the right power to powertrain components that have to work within the operational temperatures without exceeding the survival limits. So it's necessary to guarantee the right mass flow through the front-compartment to allow the maximum available heat transfer. To achieve this purpose, it has been implemented a new Methodology with AcuSolve software because of the availability of the code by Rimac Automibili.