Browsing by Author "Singh, Vijay P."
Now showing items 21-40 of 100
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Singh, Vijay P.; Marini, Gustavo; Fontana, Nicola (2013)The one-dimensional (1D) power law velocity distribution, commonly used for computing velocities in open channel flow, has been derived empirically. However, a multitude of problems, such as scour around bridge piers, ...
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Fontana, Nicola; Marini, Gustavo; Singh, Vijay P. (2013-04-08)The one-dimensional (1D) power law velocity distribution, commonly used for computing velocities in open channel flow, has been derived empirically. However, a multitude of problems, such as scour around bridge piers, ...
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Mishra, Surendra Kumar; Singh, Vijay P. (2003)The potential maximum retention, S, of the Soil Conservation Service Curve Number (SCS-CN) method (SCS, 1956) was derived for a large set of published infiltration data ranging from Plainfield sand to Yololight clay using ...
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Sherman, Bernard; Singh, Vijay P. (American Geophysical Union, 1976-10)In models for overland flow based on kinematic wave theory the friction parameter is assumed to be constant. This paper studies a converging geometry and allows continuous spatial variability in the parameter. Parameter ...
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Sherman, Bernard; Singh, Vijay P. (American Geophysical Union, 1976-10)The overland flow on an infiltrating converging surface is studied. Mathematical solutions are developed to study the effect of infiltration on nonlinear overland flow dynamics. To develop mathematical solutions, ...
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Singh, Vijay P. (American Geophysical Union, 1976-10)The proposed distributed converging overland flow model is utilized to predict surface runoff from three natural agricultural watersheds. The Lax-Wendroff scheme is used to obtain numerical solutions. For determination of ...
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Singh, Vijay P.; Yang, Chih Ted; Deng, Z. Q. (American Geophysical Union, 2003-12-04)In this study, it is hypothesized that (1) the spatial variation of the stream power of a channel for a given discharge is accomplished by the spatial variation in channel form (flow depth and channel width) and hydraulic ...
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Singh, Vijay P.; Yang, Chih Ted; Deng, Zhi-Qiang (American Geophysical Union, 2003-12-04)Using 456 data sets under bank-full conditions obtained from various sources, the geometric relations, derived in part 1 [ Singh et al., 2003 ], are calibrated and verified using the split sampling approach. The calibration ...
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Rajsekhar, Deepthi; Singh, Vijay P. (Texas Water Resources Institute, 2015-05)Natural disasters like droughts have a huge socio-economic impact on society. Despite being an important component of mitigation, the concept of vulnerabil- ity in association with extreme events has not been explored ...
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Afzalimehr, Hossein; Azareh, Sahar; Poorhosein, Mehrdad; Singh, Vijay P.; Sui, Jueyi (2014)Bed load transport is of fundamental importance in river engineering. Although there are many bed load transport equations, there is still no consensus on which equation is the best and how to select a particular equation ...
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Fiorentino, Mauro; Fontana, Nicola; Marini, Gustavo; De Martino, Giuseppe; Singh, Vijay P. (2011-11-21)In this paper, considering time-averaged velocity as a random variable, two-dimensional (2D) velocity distributions in open-channel flow have been derived based on the Shannon entropy concept and the principle of maximum ...
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Cui, Huijaun; Singh, Vijay P. (2017-03-03)Forecasting of monthly and annual groundwater levels is important for water resources management, irrigation, and assessment of climate change. This study employs entropy spectral analysis for forecasting monthly groundwater ...
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The Entropy Theory as a Tool for Modeling and Decision-making in Environmental and Water Resources Singh, Vijay P. (2000-01)Since the development of the entropy theory in the late 1940s and of the principle of maximum entropy (POME) in the late 1950s, there has been a proliferation of applications of the entropy theory in a wide spectrum of ...
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Singh, Vijay P. (American Geophysical Union, 2010)An entropy theory is formulated for modeling the potential rate of infiltration in unsaturated soils. The theory is composed of six parts: (1) Shannon entropy, (2) principle of maximum entropy (POME), (3) specification ...
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Singh, Vijay P. (American Geophysical Union, 2010)An entropy theory is formulated for one‐dimensional movement of moisture in unsaturated soils in the vertically downward direction. The theory is composed of five parts: (1) Tsallis entropy, (2) principle of maximum entropy, ...
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Cui, Huijuan (2015-04-01)Entropy spectral analysis is developed for monthly streamflow forecasting, which contains the use of configurational entropy and relative entropy. Multi-channel entropy spectral analysis is developed for long-term drought ...
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Li, Chao; Singh, Vijay P.; Mishra, Ashok K. (American Geophysical Union, 2012)Hydrometric information constitutes the fundamental input for planning, design, operation, and management of water resources systems. How to optimally site monitoring gauges such that they are effective and efficient in ...
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Fiorentino, Mauro; Claps, Pierluigi; Singh, Vijay P. (American Geophysical Union, 1993-04)Under the assumption that the only information available on a drainage basin is its mean elevation, the connection between entropy and potential energy is explored to analyze drainage basins morphological characteristics. ...
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Hao, Z.; Singh, Vijay P. (American Geophysical Union, 2012)An entropy-copula method is proposed for single-site monthly streamflow simulation. In this method, the joint distribution of adjacent monthly streamflows is constructed using the copula method, whereas the marginal ...
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Estimation of Velocity Distribution and Suspended Sediment Discharge in Open Channels Using Entropy Cui, Huijuan (2011-08-08)In hydraulics, velocity distribution is needed to determine flow characteristics, like discharge, sediment discharge, head loss, energy coefficient, moment coefficient, and scour. However, the complicated interaction between ...