Modelling transient pipe flow with cavitation and frequency dependent friction. Part II. Friction and numerical-experimental validation [PDF]
Biuletyn Wojskowej Akademii Technicznej, 2015 Modelling of time-depended hydraulic friction is not an easy issue. As numerous studies have shown, wall shear stress in the pipe can be determined as a sum of the quasi-steady and time-dependent expressions.
Kamil Urbanowicz
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Application of MacCormack algorithm in transient flow simulation of long-distance pipeline
You-qi chuyun, 2020 To improve the simulation precision and speed of long-distance pipelines, the simulation model of hydraulic transient flow in long-distance liquid pipelines was established based on the basic principle of MacCormack format and flow equation.Take one ...
Yong WANG, Li WANG, Heng HU, Suwen WANG
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Investigation of Transient Flow in Branching Pipes [PDF]
علوم و مهندسی آبیاری, 2015 Any change in the pipe discharge, caused by valve closure or shutting off the pump, results in fluctuations in velocity and pressure of the flow; which develops transient flow in the water conveyance system.
Hamid Taebi, Manoochehr FathiMoghadam
doaj
Outflow boundary conditions for 3D simulations of non-periodic blood flow and pressure fields in deformable arteries [PDF]
, 2010 The simulation of blood flow and pressure in arteries requires outflow boundary conditions that incorporate models of downstream domains. We previously described a coupled multidomain method to couple analytical models of the downstream domains with 3D ...
Figueroa, C. A. +3 more
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Flow-Induced Stresses and Displacements in Jointed Concrete Pipes Installed by Pipe Jacking Method [PDF]
, 2019 Transient flows result in unbalanced forces and high pressure in pipelines. Under these conditions, the combined effects of flow-induced forces along with sudden pipe displacements can create cracks in the pipeline, especially at the junctions.
Ahmad, Sajjad +3 more
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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 +2 more
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Numerical analysis of the 3D flow induced by propagation of plane-wave deformations on thin membranes inside microchannels [PDF]
, 2007 Propulsion mechanisms of microorganisms are based on either beating or screw-like motion of thin elastic biopolymers. Arguably, this motion is optimal for propulsion at very low Reynolds numbers. Similar actuation mechanisms can be utilized in the design
Tabak, Ahmet Fatih +2 more
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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 +3 more
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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 +5 more
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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 +4 more
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