Characterization of Internal Thermo-Hydraulic Flow and Heat Transfer Improvement in a Three-Dimensional Circular Corrugated Tube Surfaces Based on Numerical Simulation and Design of Experiment

Abstract

The effect of different tubes geometrical parameters on its flow field analysis and thermal heat transfer performance are investigated in current research work. The hydraulic thermal fluid coupling with computational simulations are applied. The numerical results are solving used flow transport and heat transfer equations then these results are validated with available experimental data. Behaviour of hydraulic and thermal flow in the corrugated tube are discussed with different geometrical parameters position and shape. Turbulent flow in tube is calculated in 3D numerical simulations with optimisation of multi-objective algorithm are analysed. The influences of various design parameters for instance, number of corrugated rings around tube, distance between each corrugated ring, diameter of ring and pitch of ring are investigated firstly in flow field and then optimised by using design of experiment (DOE). The influence of flow structural modifications such as static pressure, dynamic pressure, and pressure drop are taken into consideration as analysed performance parameters. DOE Method is investigated based on implements and variances the L16 orthogonal arrays is chosen as the experimental strategy. Furthermore, the optimisation results found that the maximum value of pressure difference was for corrugated diameter. The numerical method using DOE has enhanced heat transfer rate as compared to the smooth pipe. The outcomes illustrate that the performance evaluation factor (PEF) ratio of the corrugated pipe with different geometrical configuration is changed and increased as the corrugated pipe geometrical changed and the value of PEF is more than 1.3.