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Cement Hydration–Based Micromechanics Modeling of the Time-Dependent Small-Strain Stiffness of Fly Ash–Stabilized Soils
Publisher: American Society of Civil Engineers
Abstract: A contact mechanics model, based on the Hertzian elastic contact theory and cementation coating development at particulate scale, was established to predict the time-dependent small-strain stiffness of Class C fly ...
Diagnostic Checking in Stochastic Dynamic Programming
Publisher: American Society of Civil Engineers
Abstract: A testing procedure to diagnose whether the stochastic dynamic programming (SDP) models for reservoir operations will converge is presented. Theoretically, the stability of SDP can be diagnosed by checking whether a ...
Testing Stochastic Dynamic Programming Models Conditioned on Observed or Forecasted Inflows
Publisher: American Society of Civil Engineers
Abstract: This paper presents and compares four types of stochastic dynamic programming (SDP) for on‐line reservoir operation, relying on observed or forecasted inflows. The models are different because of the assumptions regarding ...
Investigation of Long-Term Transport in Tanshui River Estuary, Taiwan
Publisher: American Society of Civil Engineers
Abstract: The net, long-term transport of materials in estuaries is governed primarily by the residual (or tidally averaged) circulation in the system. Knowledge of the residual circulation is essential for predicting the transport ...
Modeling of Flow Resistance in Mangrove Swamp at Mouth of Tidal Keelung River, Taiwan
Publisher: American Society of Civil Engineers
Abstract: The effects of mangrove trees on the flow field in a tidal estuary during high freshwater discharge events are investigated using a depth-averaged two-dimensional hydrodynamic model. The model is refined to include the ...
Dynamic Routing Model with Real-Time Roughness Updating for Flood Forecasting
Publisher: American Society of Civil Engineers
Abstract: A flood routing model with time-varying roughness updating was developed to simulate flows through natural channels based on the dynamic wave theory. Taking observed stages as the targets, a roughness updating technique ...
Shrinkage Behavior and Prediction Model of Self-Compacting Concrete
Publisher: ASCE
Abstract: Shrinkage strain is considered one of the major concerns affecting the dimensional stability of concrete, especially self-compacting concrete (SCC) which comprises different ingredients such as high contents of cementitious ...
Procedure to Calibrate and Verify Numerical Models of Estuarine Hydrodynamics
Publisher: American Society of Civil Engineers
Abstract: In most hydrodynamic models, friction and turbulent diffusion/dispersion coefficients are the important calibration parameters affecting the calculation of surface elevation, velocity and salinity distribution. This paper ...
Modeling Salt Water Intrusion in Tanshui River Estuarine System—Case-Study Contrasting Now and Then
Publisher: American Society of Civil Engineers
Abstract: A vertical (laterally integrated) two-dimensional numerical model was applied to study the salt water intrusion in the Tanshui River estuarine system, Taiwan. The river system has experienced dramatic changes in the past ...
Development and Application of an Automated River-Estuary Discharge Imaging System
Publisher: American Society of Civil Engineers
Abstract: An automated river-estuary discharge imaging system (AREDIS) is developed to measure the velocity of a wide tidal estuary. The system contains near- and far-field cameras that capture the entire 370-m-wide channel from an ...
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