en سیستم های مکاترونیک Mechatronic systems پژوهشي Research This paper investigates 3D simulation of fluid flow in a centrifugal pump from the Detroit Diesel company to extract possible engine cooling trends.  The velocity and pressure profile of water, the coolant, is analyzed and the characteristic curves of the pump are derived. This provides a useful evaluation of the pump performance at all working conditions. For this aim, a computational fluid dynamic model is developed using ANSYS CFX for a wide span of flow rates and a number of shaft angular velocities. The variation of constituting parameters are examined using dimension-less descriptive parameters of flow, head and power coefficients, finally, the efficiency of the pump is examined. In this analysis, sst-k-w turbulent model is employed which is a combination of two different models for pumps and turbomachines. Numerical results show that prolonged cooling duty cycles of the vehicle should accompany a flow factor of 10%. In addition, the peak of the vehicle’s loading should match the maximum efficiency of the pump that can be increased to 62% by augmentation of flow rate and flow coefficient. Centrifugal Pump, Numerical Simulation, Characteristic Curve, Efficiency, Cooling process, Internal Combustion Engines, Heavy-Duty Engines 2807 2816 http://ase.iust.ac.ir/browse.php?a_code=A-10-361-1&slc_lang=en&sid=1 Hesam Moghadasi hesam_moghadasi@iust.ac.ir 180031947532846002380 180031947532846002380 No Iran University of Science and Technology Sasan Asiaei asiaei@iust.ac.ir 180031947532846002381 180031947532846002381 Yes Iran University of Science and Technology