An analytical model for water inflow into a Karst Tunnel in Vuggy and fractured porous rock aquifers

S Zhang, F Ye, W Fu - International Journal of Geomechanics, 2022 - ascelibrary.org
Vugs and fractures are the main channels within porous rock aquifers and play a dominant
role in the water inrush of the karst tunnel. In this paper, a mathematical model of the …

Model for predicting the hydraulic elements of drip irrigation system with automatic flushing valves under high sediment water

H Gao, Y Mo, J Wang, F Wu, N Gao, S Gong - Biosystems Engineering, 2023 - Elsevier
Highlights•A model for hydraulic calculation of flushing drip-irrigation system was
developed.•The simulation accuracy of the model was verified by experimental data.•The …

Analytical approach determining the optimal length of paired drip laterals in uniformly sloped fields

G Baiamonte, G Provenzano, G Rallo - Journal of Irrigation and …, 2015 - ascelibrary.org
Microirrigation plants, if properly designed, allow for water use efficiency to be optimized and
high values of emission uniformity to be obtained in the field. Disposing paired laterals, for …

Assessing Hydrus-2D model to investigate the effects of different on-farm irrigation strategies on potato crop under subsurface drip irrigation

H Ghazouani, G Rallo, A Mguidiche, B Latrech, B Douh… - Water, 2019 - mdpi.com
The objective of this paper was to assess the performance of Hydrus-2D model to simulate
the effects of different on-farm irrigation strategies applied on potato crop. The ability of the …

Using computational fluid dynamics to predict head losses in the auxiliary elements of a microirrigation sand filter

G Arbat, T Pujol, J Puig-Bargues… - Transactions of the …, 2011 - elibrary.asabe.org
It is often assumed that total head losses in a sand filter are solely due to the filtration media
and that there are analytical solutions, such as the Ergun equation, to compute them …

An improved finite element model for the hydraulic analysis of drip irrigation subunits considering local emitter head loss

J Wang, R Chen - Irrigation Science, 2020 - Springer
A good hydraulic design of drip irrigation systems requires an accurate evaluation of the
friction head loss that occurs in pipes as well as the local head loss induced by the presence …

Design of microirrigation subunit of minimum cost with proper operation

F Carrión, JM Tarjuelo, D Hernández, MA Moreno - Irrigation Science, 2013 - Springer
Matlab software named PRESUD (Pressurized Subunit Design) was developed to identify
the optimum microirrigation subunit design using the annual water application cost per unit …

Experimental determination of local head loss of non-coaxial emitters in thin-wall lay-flat polyethylene pipes

J Wang, T Yang, T Wei, R Chen, S Yuan - Biosystems Engineering, 2020 - Elsevier
The hydraulic performance of thin-wall lay-flat polyethylene pipes with non-coaxial emitters
were evaluated in this study. Two experiments were performed to measure the dimensional …

Analysis of geometrical relationships and friction losses in small-diameter lay-flat polyethylene pipes

G Provenzano, V Alagna, D Autovino… - Journal of Irrigation …, 2016 - ascelibrary.org
The use of lay-flat polyethylene pipes to irrigate horticultural crops has been receiving
widespread attention in the last decade, due to the significant improvements in their …

Analysis of local head losses in microirrigation lateral connectors based on machine learning approaches

P Martí, J Shiri, A Román, JV Turégano, Á Royuela - Irrigation Science, 2023 - Springer
The presence of emitters along the lateral, as well as of connectors along the manifold,
causes additional local head losses other than friction losses. An accurate estimation of …