Modeling of the effects of length to diameter ratio and nozzle number on the performance of counterflow Ranque–Hilsch vortex tubes using artificial neural networks

In this study, the effect of length to diameter ratio and nozzle number on the performance of a counterflow Ranque–Hilsch vortex tube has been modeled with artificial neural networks (ANN), by using experimental data. In the modeling, experimental data, which were obtained from experimental studies in a laboratory environment have been used. ANN has been designed by MATLAB 6.5 NN toolbox software in a computer environment working with Windows XP operating system and Pentium 4 2.4 GHz hardware. In the developed system outlet parameter Δ T has been determined using inlet parameters P, L/ D, N and ξ. When experimental data and results obtained from ANN are compared by statistical independent t-test in SPSS, it was determined that both groups of data are consistent with each other for P > 0.05 confidence interval, and differences were statistically not significant. Hence, ANN can be used as a reliable modeling method for similar studies.