A comparison of numerical and Lu modeling of water flow and heat transport with laboratory experiments

A Hydrothermal Coupling Model for Estimating Temperature Variations in the Riparian Zone

“…According to the results in Table 4, the average RMSE, R 2 , and Re values for the Ren model, Lu model, and Côté and Konrad model were 0.86°C, 0.95, and 3.57%, respectively, and each evaluation index reflected a satisfactory result. e Lu model is a thermal conductivity model that has been widely used in recent years [43,44] and provides a good simulation effect [18]. Research by Ren et al [18] revealed that coupled hydrothermal modeling based on the Lu model yielded better results than the traditional modeling technique, suggesting that changes in the equivalent thermal conductivity model can promote the accuracy of coupled riparian zone modeling.…”

“…However, most research methods involve laboratory or field experiments, which have relatively high costs. Although a large number of models have been proposed [11,[17][18][19], there is still room for further improvement. erefore, it is necessary to find a suitable coupling method.…”

“…On the basis of our previous research works [18,33], the major objectives of this study are to (1) provide a new modeling approach for hydrothermal coupling models to improve the estimation accuracy of lateral temperature changes in the riparian zone; (2) compare and analyze the simulation effects of different equivalent thermal conductivity models based on numerical simulation and laboratory temperature records; and (3) investigate the sensitivity of the model parameters to reduce the workload of model correction.…”

A Comparison of Su and Lu Modeling of Hydro-Thermal Coupling Model Using Field Temperature Records

“…A 2D vertical transect model was constructed. Notably, in the current research on the riparian hyporheic exchange using the heat tracing method, most studies adopted the 2D conceptual model [12,23,[29][30][31]. Chen et al (2015) [32] compared the hyporheic exchange and associated metrics of 2D and 3D bedforms, suggesting that a 2D idealization is a reasonable approximation for the more complex 3D situation if local details are insignificant.…”

“…Currently, the research on the hyporheic exchange primarily focuses on the vertical exchange of riverbeds and surface water [7][8][9][10]; however, limited research exists on the river lateral hyporheic exchange [11][12][13], a process of water exchange between rivers and their riparian zone. Owing to the particularity of the interface between the surface water and the groundwater within the riparian zone, the location and the structure of the riparian zone differ from the riverbed in aspects such as a hyporheic exchange mechanism, ecological processes, and material migration; it is an essential embodiment of the complex edge effect in the riparian zone.…”