Proposta conceitual de turbocompressor com comparativo através de solução numérica

Abstract

Through a brief analysis of the state of the art of supercharging internal combustion engines by means of a turbocharger, it is present a new concept that was conceived by the authors for comparison with a commercial model of a widely used turbocharger, searching through a computational modeling and a numerical analysis of the same to verify the validity of the proposed concept. As it was studied the physical principles of the problem, both in terms of fluids and solids, and its consequent computational representation through the finite element method, it was able to understand how to model the problem and present the comparison by appropriate means. For the geometry construction of commercial model, it was necessary to obtain its measures through an acquired part, while the version proposed by the authors was arbitrarily developed to verify the principle. The proposed concept seeks to stabilize the gas flow over the rotor blades in a wider range. Simulations of five models were performed, one related to the turbine of the comparison model, and four models of the proposed concept, where the efficiencies in relation to the results of its operation is analyzed, such as the torque transferred compressor, internal pressure and fluid velocity.