Thermo-Hydraulic Performance of Heated Tube with Twisted Delta Winglet Swirler Insert: A Numerical Simulation

Among the various methods for enhancing heat transfer in a exchanger, passive method of inserting continuous swirler inside heated tube provides secondary flow along fluid that reduces thickness thermal boundary layer, thus increasing efficiency convection performance. The research’s primary goal is to conserve energy, materials, and money by operating efficient exchanger equipment. However, creates persistent obstruction, which amplifies friction factor increases working fluid’s energy loss. As result, this research presented twisted delta winglet (TDWS), new design decaying uses winglets 180° produce swirling tube. comprises four arranged circle with diameter 6% smaller than length L/D=2.2. It was placed at entrance test section 0.016 m L/D=93.75. Reynolds Stress Model used simulate domain water-ethylene glycol mixture chosen as fluid. TDWS transformed uniform inlet from potential high kinetic resulting intensity downstream circular up L/D=46.88 before reaching steady state. Compared other swirlers, obtained one lowest relative factors, 1.36, flow. maximum global Nusselt number increased only 11% because value considered area where reached Since swirler, thermal-hydraulic performance unity optimal plain L/D=93.75 can be found if dimension or geometric configuration modified, two more may an array orientation.