EXPERIMENTAL INVESTIGATION OF DEBRIS DAMMING IN TRANSIENT FLOW CONDITIONS

2019 ◽  
Author(s):  
GABRIELLA MAUTI ◽  
JACOB STOLLE ◽  
IOAN NISTOR ◽  
MAJID MOHAMMADIAN
Keyword(s):  
Experimental Investigation ◽  
Transient Flow ◽  
Flow Conditions

Modelling solid transport in building drainage systems

1996 ◽  
Vol 33 (9) ◽  
pp. 9-16 ◽  
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.

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

2016 ◽  
Vol 40 (3) ◽  
pp. 746-761 ◽  
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.

Experimental investigation of dryout phenomena under oscillatory flow conditions

Heat Transfer ◽  
2022 ◽  
Author(s):  
Rakesh Kumar ◽  
Dinesh K. Chandraker ◽  
Arnab Dasgupta ◽  
Arun K. Nayak
Keyword(s):  
Experimental Investigation ◽  
Oscillatory Flow ◽  
Flow Conditions

scholarly journals Evaluation of the Aerodynamic and Aeroacoustic Response of a Vehicle to Transient Flow Conditions

2013 ◽  
Vol 6 (1) ◽  
pp. 389-402 ◽  
Author(s):  
Nicholas Oettle ◽  
Oliver Mankowski ◽  
David Sims-Williams ◽  
Robert Dominy ◽  
Claire Freeman
Keyword(s):  
Transient Flow ◽  
Flow Conditions

Experimental investigation on the efficiency of a high side weir overflow

1999 ◽  
Vol 39 (2) ◽  
pp. 61-68 ◽  
Author(s):  
Gert Luyckx ◽  
Guido Vaes ◽  
Jean Berlamont
Keyword(s):  
Experimental Investigation ◽  
Settling Velocity ◽  
Scale Model ◽  
Flow Conditions ◽  
Sewer System ◽  
Side Weir ◽  
Sewer Systems ◽  
High Side ◽  
Sediment Fraction

Most of the overflow structures in Flanders are ‘high side weir overflows’. For the design of these structures British guidelines are used. However, the design conditions for sewer systems in the U.K. differ from the Flemish design conditions. In Flanders, pressurised flow is in common use in the pipes of the sewer system. That is why tests have been carried out on a scale model of a high side weir overflow. The optimal dimensions are determined, using different model sediments. Also efficiency relationships have been determined. For a particular chamber geometry and particular flow conditions, the efficiency of a certain sediment fraction is only determined by the settling velocity of this fraction.

scholarly journals Experimental Investigation of Ternary Al-Si-Cu Alloy Solidified with Unsteady-State Heat Flow Conditions

2018 ◽  
Vol 21 (3) ◽  
Author(s):  
Luis Antônio de Souza Baptista ◽  
Alexandre Furtado Ferreira ◽  
Késsia Gomes Paradela ◽  
Dimas Moraes da Silva ◽  
José Adilson de Castro
Keyword(s):  
Experimental Investigation ◽  
Heat Flow ◽  
Unsteady State ◽  
Flow Conditions ◽  
State Heat ◽  
Cu Alloy
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