Transport of solutes under transient flow conditions – A case study – Yamuna river sub basin (Kosi Kalan to Agra)

In this work, the GERG-2004 equation of state based on a multi-fluid approximation explicit in the reduced Helmholtz energy is compared with the predictive Soave-Redlich-Kwong group contribution method. In the analysis, both equations of state are compared by simulating a non-isothermal transient flow of natural gas and mixed hydrogen-natural gas in pipelines. Besides the flow conditions also linepack-energy and energy consumption of the compressor station are computed. The gas flow is described by a set of partial differential equations resulting from the conservation of mass, momentum and energy. A pipeline section of the Yamal-Europe gas pipeline on Polish territory has been selected for the case study.

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Impact of Transient Flow Conditions on Electric Submersible Pumps in Sinusoidal Well Profiles: A Case Study

SPE Production & Facilities ◽

10.2118/84134-pa ◽

2005 ◽

Vol 20 (03) ◽

pp. 190-200

Author(s):

Shauna G. Noonan ◽

Michael Kendrick ◽

Patrick Matthews ◽

Ian Ayling ◽

Brown Lyle Wilson ◽

...

Keyword(s):

Transient Flow ◽

Flow Conditions

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Impact of Transient Flow Conditions on Electric Submersible Pumps in Sinusoidal Well Profiles: A Case Study

10.2118/84134-ms ◽

2003 ◽

Cited By ~ 3

Author(s):

S.G. Noonan ◽

M.A. Kendrick ◽

P.N. Matthews ◽

N. Sebastiao ◽

I. Ayling ◽

...

Keyword(s):

Transient Flow ◽

Flow Conditions

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Modelling solid transport in building drainage systems

Water Science & Technology ◽

10.2166/wst.1996.0164 ◽

1996 ◽

Vol 33 (9) ◽

pp. 9-16 ◽

Cited By ~ 4

Author(s):

John A. Swaffield ◽

John A. McDougall

Keyword(s):

Decision Making ◽

Boundary Conditions ◽

Numerical Solution ◽

Water Conservation ◽

Transient Flow ◽

Drainage System ◽

System Model ◽

Flow Depth ◽

Flow Conditions ◽

Solid Transport

The transient flow conditions within a building drainage system may be simulated by the numerical solution of the defining equations of momentum and continuity, coupled to a knowledge of the boundary conditions representing either appliances discharging to the network or particular network terminations. While the fundamental mathematics has long been available, it is the availability of fast, affordable and accessible computing that has allowed the development of the simulations presented in this paper. A drainage system model for unsteady partially filled pipeflow will be presented in this paper. The model is capable of predicting flow depth and rate, and solid velocity, throughout a complex network. The ability of such models to assist in the decision making and design processes will be shown, particularly in such areas as appliance design and water conservation.

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Influence of climate change on low flow conditions. Case study: Laborec River, eastern Slovakia

Ecohydrology & Hydrobiology ◽

10.1016/j.ecohyd.2021.04.001 ◽

2021 ◽

Author(s):

Katarzyna Kubiak-Wójcicka ◽

Martina Zeleňáková ◽

Peter Blištan ◽

Dorota Simonová ◽

Agnieszka Pilarska

Keyword(s):

Climate Change ◽

Low Flow ◽

Flow Conditions

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Flow monitoring and permeability measurement under constant and transient flow conditions

Composites Science and Technology ◽

10.1016/j.compscitech.2003.10.005 ◽

2004 ◽

Vol 64 (9) ◽

pp. 1239-1249 ◽

Cited By ~ 12

Author(s):

E. Heardman ◽

C. Lekakou ◽

M.G. Bader

Keyword(s):

Transient Flow ◽

Flow Conditions ◽

Permeability Measurement ◽

Flow Monitoring

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Determination of head losses in a surge chamber: Robert Bourassa power plant case study

Canadian Journal of Civil Engineering ◽

10.1139/l07-021 ◽

2007 ◽

Vol 34 (9) ◽

pp. 1038-1047 ◽

Cited By ~ 1

Author(s):

Musandji Fuamba ◽

Gilles Brosseau ◽

Éric Mainville

Keyword(s):

Power Plant ◽

Three Dimensional ◽

Hydraulic Head ◽

Transportation Systems ◽

Flow Conditions ◽

Flow Models ◽

Head Losses ◽

Water Transportation

Optimal management of power plant units is achieved when the global efficiency of the units and the minimization of the total hydraulic head losses through the water transportation systems can be combined. Evaluating these hydraulic head losses appears to be very difficult due to the complexity of the flow conditions through the hydraulic structures. A hydraulic energy based method to determine head losses in the surge chamber has been proposed in this paper, as well as a method to manage the opening of units which would optimize the production of electricity. This method was applied to a case study, and successful results have been obtained showing how the head loss varies in the surge chamber.Key words: hydraulic head losses, power plant unit, surge chamber, unit efficiency, three-dimensional flow conditions, turbulent flow models, computational fluid dynamics.

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Local characteristic of horizontal air–water two-phase flow by wire-mesh sensor

Transactions of the Institute of Measurement and Control ◽

10.1177/0142331216665689 ◽

2016 ◽

Vol 40 (3) ◽

pp. 746-761 ◽

Cited By ~ 5

Author(s):

Weiling Liu ◽

Chao Tan ◽

Feng Dong

Keyword(s):

Void Fraction ◽

Transient Flow ◽

Two Phase Flow ◽

Wire Mesh ◽

Local Characteristic ◽

Phase Flow ◽

Flow Conditions ◽

Two Phase ◽

Horizontal Pipe ◽

Local Flow

Two-phase flow widely exists in many industries. Understanding local characteristics of two-phase flow under different flow conditions in piping systems is important to design and optimize the industrial process for higher productivity and lower cost. Air–water two-phase flow experiments were conducted with a 16×16 conductivity wire-mesh sensor (WMS) in a horizontal pipe of a multiphase flow facility. The cross-sectional void fraction time series was analysed by the probability density function (PDF), which described the void fraction fluctuation at different flow conditions. The changes and causes of PDFs during a flow regime transition were analysed. The local structure and flow behaviour were characterized by the local flow spectrum energy analysis and the local void fraction distribution (horizontal, vertical and radial direction) analysis. Finally, three-dimensional transient flow fluctuation energy evolution and characteristic scale distribution based on wavelet analysis of air–water two-phase flow were presented, which revealed the structural features of each phase in two-phase flow.

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