Results 21 to 30 of about 418,767 (267)

On the Relationship between Experimental and Numerical Modelling of Gravel-Bed Channel Aggradation

Hydrology, 2019
This communication explores the use of numerical modelling to simulate the hydro-morphologic response of a laboratory flume subject to sediment overloading. The numerical model calibration was performed by introducing a multiplicative factor in the Meyer&
Barbara Zanchi, Matteo Zucchi, Alessio Radice   +2 more
doaj   +1 more source

Numerical simulation of transient flow in horizontal drainage systems

Water Science and Engineering, 2009
A numerical simulation model based on the characteristic-based finite-difference method with a time-line interpolation scheme was developed for predicting transient free surface flow in horizontal drainage systems.
Ze-yu Mao, Han Xiao, Ying Liu, Ying-jun Hu   +3 more
doaj   +1 more source

Simulation Model and Case Study of Drainage Process After Pressure Test of Large Drop Natural Gas Pipeline

IEEE Access, 2020
The drainage process of a large drop natural gas pipeline after a pressure test is a complicated transient flow process. This process is a gas-phase and liquid-phase flow process connected by a pig, in which the pressure inside the tube, and the flow ...
Enbin Liu, Yong Peng, Shanbi Peng, Haiyang Sun, Weibiao Qiao, Mohammadamin Azimi   +5 more
doaj   +1 more source

Transient Two-Phase Flow in Porous Media: A Literature Review and Engineering Application in Geotechnics

Geotechnics, 2022
This work reviews the transient two-phase flow in porous media with engineering applications in Geotechnics. It initially overviews constitutive relationships, conventional theories, and experiments.
Guanxi Yan, Zi Li, Sergio Andres Galindo Torres, Alexander Scheuermann, Ling Li   +4 more
doaj   +1 more source

Impact of Heterogeneity on the Transient Gas Flow Process in Tight Rock

Energies, 2019
There exits a great challenge to evaluate the flow properties of tight porous media even at the core scale. A pulse-decay experiment is routinely used to measure the petrophysical properties of tight cores including permeability and porosity.
Bao Jia, Jyun-Syung Tsau, Reza Barati, Fan Zhang   +3 more
doaj   +1 more source

Coupled Numerical and Analytical Stability Analysis Charts for an Earth-Fill Dam under Rapid Drawdown Conditions

Applied Sciences, 2022
The presented article provides a comprehensive study on the stability analysis of earth-fill dams under rapid drawdown and transient flow conditions used to prepare stability analysis charts by conducting coupled finite-element numerical and analytical ...
Ali Azadi, Arash Esmatkhah Irani, Mohammad Azarafza, Masoud Hajialilue Bonab, Fariba Behrooz Sarand, Reza Derakhshani   +5 more
doaj   +1 more source

Communication and Language Profiles of Children Treated for Posterior Fossa Brain Tumors

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Cognitive and language deficits are frequently reported sequelae of posterior fossa brain tumors (PFBT). Typically, delayed onset impedes prompt assessment and early intervention. This has devastating implications for quality of life.
Zara Sved, Meghan Hesse, Jennie Cusiter, Annabel Webb, Kimberley Docking   +4 more
wiley   +1 more source

The HIT Network for Children and Adolescents With CNS Tumors Facilitates Improvements of Diagnostic Assessments, Multimodal Treatments, Individual Counseling, and Research in Germany, Austria, and Switzerland

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background The HIT network was established in 2000 to create a population‐based structure aiming to improve survival rates and reduce late effects for children with central nervous system (CNS) tumors by conducting comprehensive clinical trials.
Stefan Rutkowski, Michael C. Frühwald, Gudrun Fleischhack, Stephan Tippelt, Pablo Hernáiz‐Driever, Olaf Witt, Astrid Gnekow, Christof Kramm, Matthias Eyrich, Johannes E. A. Wolf, Hermann Müller, Carsten Friedrich, Uwe R. Kordes, Denise Obrecht‐Sturm, Petra Ketteler, Barbara von Zezschwitz, Pascal Johann, Dominik Sturm, Karoline Nemes, Stefan Schönberger, Till Milde, Brigitte Bison, Monika Warmuth‐Metz, Torsten Pietsch, Ulrich Schüller, Arend Koch, David Capper, Martin Hasselblatt, Christian Thomas, Christian Hagel, Stefan M. Pfister, Felix Sahm, David T. W. Jones, Martin U. Schuhmann, Jürgen Krauss, Pedram Emami, Ahmed El Damaty, Rolf D. Kortmann, Rudolf Schwarz, Jürgen Debus, Mechthild Krause, Fabian Pohl, Holger Ottensmeier, Lisa Bußenius, Katja Baust, Andreas Faldum, Cecile Ronckers, Desiree Grabow, Martin Benesch, Thomas Perwein, Karin Dieckmann, Irene Slavc, Johannes Gojo, Nicolas U. Gerber, André O. von Bueren, Katrin Scheinemann, Gabriele Calaminus, Beate Timmermann, Ulrich‐Wilhelm Thomale, Martin Mynarek   +59 more
wiley   +1 more source

Hydrodynamic Modeling for Flow and Velocity Estimation from an Arduino Ultrasonic Sensor

Hydrology
Flow is a crucial variable in water resources, although its determination is challenging. Rating curves are standard but have conceptual limitations, leading to significantly high uncertainties.
Tatiane Souza Rodrigues Pereira, Thiago Pires de Carvalho, Thiago Augusto Mendes, Guilherme da Cruz dos Reis, Klebber Teodomiro Martins Formiga   +4 more
doaj   +1 more source

Effect of Overburden Height on Hydraulic Fracturing of Concrete-Lined Pressure Tunnels Excavated in Intact Rock: A Numerical Study

Fluids, 2019
This study investigated the impact of overburden height on the hydraulic fracturing of a concrete-lined pressure tunnel, excavated in intact rock, under steady-state and transient-state conditions.
Moses Karakouzian, Mohammad Nazari-Sharabian, Mehrdad Karami   +2 more
doaj   +1 more source