Effect of V-cut on the performance of a longitudinal vortex generator using CFD

Abstract

Computational analysis is conduct to investigate the comparative study between V-cut vortex generator and without Vcut vortex generator at different spacing lengths. Water is the working fluid, and the Reynolds number is varying in the range of 300 to 1,500. Computational results are validated with the available literature, and SST k-ω turbulence model is used for the computational analysis. The performances of both designs are compared by using performance evaluation criteria (PEC). Friction factor, heat transfer rate, and performance evaluation criteria are evaluated in both cases for different spacing ratio (2-8) between the vortex generators. The overall performance evaluation criterion for the modified design (V-cut vortex generator) is found to increase in the range of 0.66 to 6.18% as compared to the original design (without V-cut vortex generator). They concluded that the modified design is more effective as compared to the original design.

Keywords

• friction factor
• pec
• turbulence modelling
• v-cut vortex generator