Air – water flow through a single serpentine mini channel – flow distribution and pressure drop

2017 ◽  
Vol 96 ◽  
pp. 48-55 ◽  
Author(s):  
Sneha Malhotra ◽  
Aniruddha Deshpande ◽  
Sumana Ghosh
Keyword(s):  
Pressure Drop ◽  
Water Flow ◽  
Channel Flow ◽  
Flow Distribution ◽  
Flow Through

Flow Distribution in Flat Solar Collectors Systems Interconnected

2012 ◽  
Author(s):  
C. O. Ríos Orozco ◽  
N. C. Uzarraga-Rodriguez ◽  
A. Gallegos-Muñoz ◽  
J. M. Riesco Ávila
Keyword(s):  
Friction Coefficient ◽  
Pressure Drop ◽  
Water Flow ◽  
Solar Collector ◽  
Flow Distribution ◽  
Solar Collectors ◽  
Hydraulic Analysis ◽  
Hydraulic Behavior ◽  
Flow Through

In this work the characterization of the water flow through a flat solar collector and solar collectors systems interconnected is presented. This allows analyzing the behavior of flow distribution in the headers pipe and riser tubes of flat solar collectors. The hydraulic analysis allows determining if the water flow inside the risers presents a no-uniform distribution, having that the mass flow rate through riser tubes increases when they are located a greater distance from inlet of header pipe. This effect also occurs at system composed of several solar collectors interconnected, through their own header pipes, which behaves like a simple flat solar collector with header pipe longer and major number of riser tubes. The hydraulic model of the water flow through a flat solar collector, equipped with different number of riser tubes, is modeled in the FLUENT® software and comparing with theory and methodology knowing for the calculation of pressure drop in pipe sections and accessories. The results show the curves obtained for hydraulic behavior for the cases of study, where is observed that the water flow is no-uniform. This no uniformity provokes that the friction coefficient varies depending of the position of riser tube.

Gas holdup and pressure drop for air-water flow through plate bubble columns

1986 ◽  
Vol 64 (3) ◽  
pp. 387-392 ◽  
Author(s):  
B. H. Chen ◽  
N. S. Yang ◽  
A. F. Mcmillan
Keyword(s):  
Pressure Drop ◽  
Water Flow ◽  
Gas Holdup ◽  
Bubble Columns ◽  
Flow Through

scholarly journals Two Efficient Methods for Gas Distributive Network Calculation

2018 ◽  
Author(s):  
Dejan Brkić
Keyword(s):  
Pressure Drop ◽  
Thermodynamic Properties ◽  
Gas Flow ◽  
Flow Distribution ◽  
Gas Pipeline ◽  
Gas Flow Rate ◽  
Closed Loops ◽  
Loop Method ◽  
Hardy Cross ◽  
Flow Through

Today, two very efficient methods for calculation of flow distribution per branches of a looped gas pipeline are available. Most common is improved Hardy Cross method, while the second one is so-called unified node-loop method. For gas pipeline, gas flow rate through a pipe can be determined using Colebrook equation modified by AGA (American Gas Association) for calculation of friction factor accompanied with Darcy-Weisbach equation for pressure drop and second approach is using Renouard equation adopted for gas pipeline calculation. For the development of Renouard equation for gas pipelines some additional thermodynamic properties are involved in comparisons with Colebrook and Darcy-Weisbach model. These differences will be explained. Both equations, the Colebrook’s (accompanied with Darcy-Weisbach scheme) and Renouard’s will be used for calculation of flow through the pipes of one gas pipeline with eight closed loops which are formed by pipes. Consequently four different cases will be examined because the network is calculated using improved Hardy Cross method and unified node-loop method. Some remarks on optimization in this area of engineering also will be mentioned.

Pressure Drop Characteristics of Water Flow Through Static Annular and Triangular Cavity Labyrinth Seals

2008 ◽  
Vol 2 (4) ◽  
pp. 482-495 ◽  
Author(s):  
S. P. Asok ◽  
K. Sankaranarayanasamy ◽  
T. Sundararajan ◽  
P. Starwin ◽  
R. Kalieswaran ◽  
...  
Keyword(s):  
Pressure Drop ◽  
Water Flow ◽  
Labyrinth Seals ◽  
Flow Through

Pressure drop for adiabatic air-water flow through a time-varying constriction

2018 ◽  
Vol 30 (10) ◽  
pp. 101901 ◽  
Author(s):  
A. Van Hirtum ◽  
A. Bouvet ◽  
X. Pelorson
Keyword(s):  
Pressure Drop ◽  
Water Flow ◽  
Time Varying ◽  
Flow Through

Research Note: Pressure Drop during Steam/Water Flow through Orifices

1974 ◽  
Vol 16 (5) ◽  
pp. 353-355 ◽  
Author(s):  
D. Chisholm ◽  
D. H. Rooney
Keyword(s):  
Pressure Drop ◽  
Water Flow ◽  
Research Note ◽  
Flow Through

A method of predicting the pressure drop during steam/water flow through orifices is presented, which extends an existing procedure to give improved agreement with experiment at conditions of low dryness fraction.

scholarly journals Friction factor for water flow through packed beds of spherical and non-spherical particles

2017 ◽  
Vol 23 (1) ◽  
pp. 57-66
Author(s):  
Tatjana Kaludjerovic-Radoicic ◽  
Nevenka Boskovic-Vragolovic ◽  
Radmila Garic-Grulovic ◽  
Mihal Djuris ◽  
Zeljko Grbavcic
Keyword(s):  
Pressure Drop ◽  
Friction Factor ◽  
Water Flow ◽  
Spherical Particles ◽  
Packed Beds ◽  
Mean Absolute Deviation ◽  
Absolute Deviation ◽  
Flow Through ◽  
Sand Particles ◽  
Different Diameters

The aim of this work was the experimental evaluation of different friction factor correlations for water flow through packed beds of spherical and non-spherical particles at ambient temperature. The experiments were performed by measuring the pressure drop across the bed. Packed beds made of monosized glass spherical particles of seven different diameters were used, as well as beds made of 16 fractions of quartz filtration sand obtained by sieving (polydisperse non-spherical particles). The range of bed voidages was 0.359?0.486, while the range of bed particle Reynolds numbers was from 0.3 to 286 for spherical particles and from 0.1 to 50 for non-spherical particles. The obtained results were compared using a number of available literature correlations. In order to improve the correlation results for spherical particles, a new simple equation was proposed in the form of Ergun?s equation, with modified coefficients. The new correlation had a mean absolute deviation between experimental and calculated values of pressure drop of 9.04%. For non-spherical quartz filtration sand particles the best fit was obtained using Ergun?s equation, with a mean absolute deviation of 10.36%. Surface-volume diameter (dSV) necessary for correlating the data for filtration sand particles was calculated based on correlations for dV = f(dm) and ? = f(dm).

HEAT TRANSFER BURNOUT IN WATER FLOW THROUGH ROUND TUBES AND ANNULI

1970 ◽  
Author(s):  
B. A. Zenkevich ◽  
P. L. Kirillov ◽  
G. V. Alekseev ◽  
O. L. Peskov ◽  
O. A. Sudnitsyn
Keyword(s):  
Heat Transfer ◽  
Water Flow ◽  
Flow Through
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