THERMAL ANALYSIS OF DIFFERENT CONICAL EXHAUST DIFFUSER USING FEA & CFD

Abstract

CFD is a branch of fluid mechanics that uses numerical methods and algorithms to solve and analyse that
involve fluid flows. In this thesis CFD analysis of flow within diffuser of different cross sections square, circular and
hexagonal has been performed. The analysis has been performed according to the shape of diffuser and keeping the same
input conditions. Our objective is to investigate the best suited diffuser which gives high co-efficient of pressure recovery.
The analysis is carried out for various models such as circular, square and hexagonal diffusers. The modeling is
done in Creo Parametric 3.0, thermal analysis is done in Ansys 15.0 and Flow Analysis is carried out in Fluent
(Workbench 15.0). The thermal analysis is performed to check for the better material among Stainless steel, Al-alloy and
Copper alloy basing on results that include temperature distribution and heat flux distribution. Computational fluid
dynamics (CFD) analysis was performed on diffusers with different shapes and based on the results obtained the
geometry that yielded the maximum pressure recovery was identified.