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Publications (14)
Bed form-driven hyporheic exchange is vital to biogeochemical processes occurring within aquatic sediment. The integrated effects of hyporheic processes in a bed form ultimately impact watershed-scale water quality. However, much of what is understood regarding bed hyporheic exchange is based on idealized two-dimensional bed forms despite the preva...
We examined the dynamic processes of hyporheic exchange and temperature distribution in a riparian zone in response to low-temperature water fluctuations downstream of the Xin’an River Dam, China, using analytical and mainly hydrodynamic methods. For this purpose, we installed six HM21 piezometers (R, P1–P5) between the river water and the groundwa...
Hyporheic zone is considered as a dynamic hydrologic ecotone that critical for maintaining the health of river systems. The hyporheic flux occurs generally in response to variations in river bedforms. In this study, we first generated several typical bedforms. The turbulent flow over the 3D dunes and hyporheic flow in the sediment are simulated thr...
This study applied the two-dimensional AdH (adaptive hydraulics)
hydrodynamic model to a river reach to analyze flood hydraulics on complex
floodplains. Using the AdH model combined with bathymetry and topographic
data from the United States Geological Survey (USGS) seamless server and the
United States Army Corps of Engineers (USACE), we intended...
The hyporheic zone is often a critical component of river systems. Hyporheic exchange is generally forced by variation in riverbed topography such as due to bedforms. Most previous research on bedform-driven hyporheic flow has focused on two-dimensional (2D) dunes and ripples, while little has been done on their three-dimensional (3D) counterparts....
In this study, physical experiments and numerical simulations are combined to provide a detailed understanding of flow dynamics in fracture network. Hydraulic parameters such as pressure head, velocity field, Reynolds number on certain monitoring cross points, and total flux rate are examined under various clogging conditions. Applying the COMSOL M...
This paper among the first presents the application and validation of a hydrodynamic model
(Adaptive Hydraulics model, AdH) of the McCarran ranch. We use the AdH model with topographic
data by combining the DEM data from USGS seamless server and the ESRI tin data from United States
Army Corps of Engineers (USACE) to predict floodplain inundation fo...
Hyporheic zones are critical for maintaining river ecosystem as they
provide hyporheic and riparian organisms critical solutes, including
nutrients and dissolved gases from bedforms to watershed scales. Among
the hyporheic driving factors, the streambed topogaraphy is considered
as a significant driving factor for hydraulic process in hyporheic zon...
As toxic industrial waste water or other liquids is discharging or transporting by pipeline, due to pipeline corrosion damage or other external force action, the leaking liquid can pollute the soil, groundwater or the surrounding environment to a certain extent. The possible leakage forms and characteristics (geometrical features, the source concen...
With the development of underground reservoir construction and the developed theory of risk analysis, underground reservoir risk analysis has come up with a good opportunity. This study mainly discusses the risks on recharge of underground reservoir. It takes model identification on the factors causing recharge risk, and makes a description on thei...