Numerical Optimization of Heat Transfer Parameters in a Pipe with Decaying Swirl Flow Generators Using Response Surface Methodology

Abstract

In this study; the heat transfer parameters (Reynolds number, helix angle and pitch) of an axial swirl flow generator attached to the pipe inlet were numerically optimized. The Response Surface Method Central Composite Design Face Centered (CCDFC) was used for this purpose. Three different parameters were examined at 3 levels with 20 analyzes performed in Fluent. The heat transfer coefficient (h) was determined as the objective function. As a result of the analysis, the square effects of Reynolds number and the combined effect of Reynolds number and swirl angle () were found to be statistically significant. Optimum results were obtained for the Reynolds number of 15000, for 15° the swirl angle with the pitch being 2mm. In addition, a mathematical model is proposed for the heat transfer coefficient, which is determined as a response function.