This work introduces an approach for taking into account the uncertainty of pipe friction coefficients and nodal demands in the hydraulic analysis of water supply networks. For this purpose, uncertainties are represented by fuzzy numbers and incorporated into the network's governing equations. Input uncertainties are spread out on the network and influence its hydraulic responses, including pip...

Multioutlet hydrants as joint network infrastructure remain briefly addressed in the literature. Studies have always been limited to individual treatment of hydraulic components but not a whole element. This study presents main problems field multioutlet within for pressure irrigation networks Mediterranean agriculture. First, with interviews was carried out 30 water users associations (WUAs) b...

This study aimed to examine the fractal properties of optimal hydraulic gradient surface (OHGS), a geometrical body that describes way in which available energy should be spent within water distribution network ensure calculation minimum capital cost design. For this purpose, multiple benchmark and Colombian systems were optimized then analyzed compute dimension OHGS underlying structure each n...

Electro-hydraulic differential cylinder drives with variable-speed displacement units as their central transmission element are subject to an increasing focus in both industry and academia. A main reason is the potential for substantial efficiency increases due avoidance of throttling flows. Research contributions have mainly been focusing on appropriate compensation volume asymmetry developmen...

by Walfre Franco Theoretical, numerical and experimental studies of hydraulic, thermal and control aspects in fluid networks are presented. First, a one-dimensional differentialalgebraic nonlinear model, based on first principles, representing the time-dependent behavior in networks is developed. A thermal-hydraulic analysis of a small network with three common control strategies for heating an...

Supraglacial channel networks link time varying melt production and meltwater routing on temperate glaciers. Such channel networks often include components of both surface transport in streams and subsurface porous flow through near-surface ice, firn or snowpack. Although subsurface transport if present will likely control network transport efficacy, it is the most poorly characterized componen...

To use soil hydrology processe (SHP) models, which have increasingly extended during the last years, comprehensive knowledge about these models and their modeling approaches seems to be necessary. The modeling approaches can be categorized as either classical or non-classical. Classical approaches mainly model the SHP through solving the general unsaturated flow (Richards) equation, numerically...