Numerical investigation of turbulent flow and heat transfer characteristics in the improved Kenics static mixer

Abstract

AbstractThis study focuses on using computational fluid dynamics to explore how well a modified static mixing component called the Kenics static mixer (KSM) increases heat transfer. The purpose of the study is to assess this new static mixer's pressure drop and heat transfer properties. Convective heat transport of water within the improved Kenics static mixer (IKSM) was examined using three‐dimensional turbulent, steady, and incompressible flow simulations. The Nusselt number and friction factor simulation results in the KSM are in good agreement with previous literature findings. Between the simulated outcomes of the IKSM, empty pipe, and standard KSM, a comparison analysis was done. The study considered a range of Reynolds number (Re) values from 2000 to 20,000 and investigated the effects of the Re, slit width configuration (), as well as an aspect ratio () on heat transfer and mixing. Based on the performance evaluation criteria and field synergy number characteristics, the hydrothermal efficiency of the IKSM was evaluated, allowing the geometry to be modified for better heat transmission while lowering the friction factor. Notably, in the 2000–20,000 Reynolds number range, the IKSM with four slits showed a 38%–52% greater heat transfer coefficient than the traditional KSM.