scholarly journals Modeling of Ice Slurry Flow through Bend Pipe

2020 ◽  
Vol 802 ◽  
pp. 012001
Author(s):  
K.S. Rawat ◽  
A. Verma ◽  
A. Uniyal ◽  
H.P. Gangwar ◽  
A.K. Pratihar
Keyword(s):  
Ice Slurry ◽  
Slurry Flow ◽  
Bend Pipe ◽  
Flow Through

scholarly journals Loss coefficients of ice slurry in sudden pipe contractions

2010 ◽  
Vol 31 (3) ◽  
pp. 73-86
Author(s):  
Łukasz Mika
Keyword(s):  
Mass Fraction ◽  
Flow Resistance ◽  
Volume Fraction ◽  
Experimental Studies ◽  
Solid Particles ◽  
Minimal Flow ◽  
Ice Slurry ◽  
Slurry Flow ◽  
Flow Through ◽  
Loss Coefficients

Loss coefficients of ice slurry in sudden pipe contractionsIn this paper, flow systems which are commonly used in fittings elements such as contractions in ice slurry pipelines, are experimentally investigated. In the study reported in this paper, the consideration was given to the specific features of the ice slurry flow in which the flow behaviour depends mainly on the volume fraction of solid particles. The results of the experimental studies on the flow resistance, presented herein, enabled to determine the loss coefficient during the ice slurry flow through the sudden pipe contraction. The mass fraction of solid particles in the slurry ranged from 5 to 30%. The experimental studies were conducted on a few variants of the most common contractions of copper pipes: 28/22 mm, 28/18 mm, 28/15 mm, 22/18 mm, 22/15 mm and 18/15 mm. The recommended (with respect to minimal flow resistance) range of the Reynolds number (Re about 3000-4000) for the ice slurry flow through sudden contractions was presented in this paper.

scholarly journals Ice slurry flow and heat transfer during flow through tubes of rectangular and slit cross-sections

2014 ◽  
Vol 35 (3) ◽  
pp. 171-190
Author(s):  
Beata Niezgoda-Żelasko ◽  
Jerzy Żelasko
Keyword(s):  
Heat Transfer ◽  
Pressure Drop ◽  
Cross Sections ◽  
Heat Transfer Process ◽  
Solid Particles ◽  
Ice Slurry ◽  
Slurry Flow ◽  
Transfer Coefficients ◽  
Laminar And Turbulent Flow ◽  
Flow Through

Abstract The paper presents the results of experimental research of pressure drop and heat transfer coefficients of ice slurry during its flow through tubes of rectangular and slit cross-sections. Moreover, the work discusses the influence of solid particles, type of motion and cross-section on the changes in the pressure drop and heat transfer coefficient. The analysis presented in the paper allows for identification of the criterial relations used to calculate the Fanning factor and the Nusselt number for laminar and turbulent flow, taking into account elements such as phase change, which accompanies the heat transfer process. Ice slurry flow is treated as a generalized flow of a non-Newtonian fluid.

Numerical Simulation of Turbulent Driven Secondary Flow in a 90° Bend Pipe

2013 ◽  
Vol 765-767 ◽  
pp. 514-519
Author(s):  
Min Chen ◽  
Zhi Guo Zhang
Keyword(s):  
Numerical Simulation ◽  
Large Scale ◽  
Three Dimensional ◽  
Curvature Flow ◽  
Bend Pipe ◽  
Curved Pipe ◽  
Numerical Result ◽  
Bent Pipe ◽  
Flow Through ◽  
Strong Curvature

The numerical simulation of the developing turbulent flow through a three-dimensional curved pipe with strong curvature is presented. This numerical simulation is to investigate the flow structure of pipe-flow through a 90° bent pipe with the aid of RNG k-ε turbulence model, which had been well validated for high screwed curvature flow. Dean Motion downstream of the bend are found and presented. And the numerical result demonstrates that Dean motions co-exist with large scale swirling motions inside the bend pipe. Snapshot of velocity and pressure reveals that the structures found upstream of the bend persist after the bend and survive the strong secondary motions induced by the pipe curvature.

Cooling by the Sine Function to Produced Semi-Solid Aluminum Alloys

2010 ◽  
Vol 146-147 ◽  
pp. 1788-1791 ◽  
Author(s):  
Song Yang Zhang ◽  
Xiao Qin Guo ◽  
Chang Hong Liu ◽  
Si Zhong Li ◽  
Ying Zhang
Keyword(s):  
Solid State ◽  
High Efficiency ◽  
Sine Wave ◽  
Semisolid Slurry ◽  
Sine Function ◽  
Slurry Flow ◽  
Limited Growth ◽  
Flow Through ◽  
A New Technique ◽  
Semi Solid

There are many advantages of semi-solid processing technology such as energy saving, high efficiency and net-shaped processing. So it is a promising manufacturing technology in 21 century .It is the premise of getting the non-dendrite semisolid slurry to realize the semisolid processing.This paper reviewed the development of the technique of preparation for semi-solid state slurry and introduced some new researchment about the technique of preparation slurry for semi-solid processing. It researched a new technique of preparation for semi-solid state slurry—cooling by the sine function to produced the semi-solid state slurry. The result showed that the aluminum alloy melt was cooled and controlled nucleation and limited growth in the sine wave The fundamental principles through which sound semi-solid slurry can be effectively obtained were summarized.On the basis of the experiment and simulation，it analysised the temperature field and the flow field of the semisolid 2A12 slurry flow through sine passage. The result showed that there is the cooling and the self-stirring when the semisolid 2A12 slurry flow through sine passage. The fundamental principles through which sound semi-solid slurry can be effectively obtained were summarized. Finally, we presented a patent this simple process .

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