Numerical Study of Different Models for Turbulent Flow in 90° Pipe Bend

The investigation of the turbulence statistics for single-phase turbulent flow around pipe bends have mainly been experimental. Considering cost-effectiveness numerical computational fluid dynamics (CFD) compared to experimental measurement, this work aims study accuracies different CFD models, and establish their functionality limitations. This paper investigates capabilities models spatial discretization schemes analysis a bend. has curvature radius which is seven times inside diameter Reynolds number 34132. modelling was developed on commercial software, ANSYS Fluent, evaluating following viscous models:,, Spalart-Allmaras Stress Models. streamwise velocities at cross-stream planes along bend 45º 75º were computed each under schemes. results against existing data velocity, in order investigate models. showed that realizable K-E exhibited best agreements with measurements, respective average errors 3.83% 3.27% first-order scheme. It also observed velocity profiles obtained through K-W (Standard BSL), Transition SST better correlation within transition region.