Comparison of turbulent transport models of L- and H-mode plasmas

Theory-based turbulent transport models have been proposed and used in transport simulations to predict the performance of the International Thermonuclear Experimental Reactor (ITER). We have selected the current diffusive ballooning mode (CDBM), GLF23 and Weiland models as typical transport models. Taking experimental data from the ITPA profile database, simulations have been carried out to compare the results with each other using our one-dimensional diffusive transport code. It is found that each model has unique dependence on devices and operation modes, and most reasonable results among the models can be obtained by the CDBM model for L-mode discharges and by the GLF23 model for H-modes. From an analysis of T-e/T-i dependence, predictions of the CDBM and Weiland models could be better in the hot electron regime. The effect of the elliptic cross section of the plasma has been included in the CDBM model, and it is confirmed that an accuracy of the prediction is improved for H-mode discharges. Finally, heat transport simulations for a single particle species have indicated that the CDBM model reproduces T-i profiles more accurately than T-e profiles.