Modeling and Analysis of Exhaust Manifold using CFD

Abstract

This project goals in re-designing an exhaust manifold by means of determining the thermal stresses and deflections exhibited underneath various operating situations with distinctive materials and temperatures. The objective is to make certain the suitability of the design for two diffrent fabric from the view point of reliability and serviceability. Defects in present manifold are cracks normally occur because of prolonged publicity to severe temperatures, defects in casting and repeated warmness cycling. Welded regions and the curved profiles are the essential regions of failureA methodology is developed to ensure the best suited design and material for the given operating conditions, Manifold behaviour is analysed on two different materials such as stainless steel and grey cast iron. Redesigning the curved profiles can reduce the turbulence effect of the exhaust gases on the welds. High-end CAD/CAM software such as SOLIDWORKS 2016 and ANSYS 16.0 are used for modelling and analysis. Exhaust manifold is design by using solidworks software and transfer to ansys software, Computational fluid dynamic analysis is performed to study flow characteristics such as pressure velocity and temperature to study its performance and back pressure factors, and temperature after convection by surrounding air, than the same temperature after CFD analysis is applied on body in static structural analysis module to study its strength on thermal load that is to find out its stresses and deformation on working thermal load conditions, the material which give good strength to weight ratio will conclude the best material.