Theoretical prediction of atomization performance of fibre suspensions and the effect of feed temperature and air velocity

The current work presents a study of an air blast simplex atomizer which supplies air to the fuel spray through radial channels for liquid film dispersing. The performance of two atomizer configurations using either co-rotating or counter-rotating liquid and air flows was investigated. The change in the direction of liquid swirl was achieved by replacing the inner swirler with a similar one having the holes drilled on the opposite side. Atomizer flow number FNSI in the experiments was 0.74·10−7. The study has shown that droplet size reduces significantly when the air velocity grows up to 60 m/s but further increase in air velocity has almost no effect on the droplet size. In the absence of air supply the increase in liquid pressure leads to the decrease of Sauter mean diameter (SMD) of droplets from 85 to 60 μm. However, in the air blowing regime the liquid pressure has only slight effect on SMD rising it from 30 to 40 μm. Better atomization performance has been obtained in the case of co-rotation atomizer.

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42. Effects of Breathing, Posture, and Air Velocity on Breathing Zone Concentrations for Human Subjects in a Wind Tunnel. Part III

10.3320/1.2759042 ◽

2006 ◽

Author(s):

S. Guffey ◽

A. El-Sotouhy

Keyword(s):

Wind Tunnel ◽

Human Subjects ◽

Breathing Zone ◽

Air Velocity

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40. Effects of Heating, Posture, and Air Velocity on Breathing Zone Concentrations for Manikin in a Wind Tunnel. Part I

10.3320/1.2759040 ◽

2006 ◽

Author(s):

S. Guffey ◽

W. El-Nahas

Keyword(s):

Wind Tunnel ◽

Breathing Zone ◽

Air Velocity

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Analysis of LPG diffusion flame in tube type burner

JOURNAL OF MECHANICAL ENGINEERING AND SCIENCES ◽

10.15282/jmes.13.3.2019.05.0431 ◽

2019 ◽

Vol 13 (3) ◽

pp. 5278-5293

Author(s):

Vipul Patel ◽

Rupesh Shah

Keyword(s):

Diffusion Flame ◽

Emission Characteristic ◽

Flame Stability ◽

Liquefied Petroleum Gas ◽

Air Velocity ◽

Length Fraction ◽

Low Emission ◽

Tube Type ◽

Stability Limits ◽

Co Emission

The present research aims to analyse diffusion flame in a tube type burner with Liquefied petroleum gas (LPG) as a fuel. An experimental investigation is performed to study flame appearance, flame stability, Soot free length fraction (SFLF) and CO emission of LPG diffusion flame. Effects of varying air and fuel velocities are analysed to understand the physical process involved in combustion. SFLF is measured to estimate the reduction of soot. Stability limits of the diffusion flame are characterized by the blowoff velocity. Emission characteristic in terms of CO level is measured at different equivalence ratios. Experimental results show that the air and fuel velocity strongly influences the appearance of LPG diffusion flame. At a constant fuel velocity, blue zone increases and the luminous zone decreases with the increase in air velocity. It is observed that the SFLF increases with increasing air velocity at a constant fuel velocity. It is observed that the blowoff velocity of the diffusion flame increases as fuel velocity increases. Comparison of emission for flame with and without swirl indicates that swirl results in low emission of CO and higher flame stability. Swirler with 45° vanes achieved the lowest CO emission of 30 ppm at Φ = 1.3.

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Theoretical Prediction of the Thermal Conductivity of Frozen Foods

Proceeding of Thermal Sciences 2004. Proceedings of the ASME - ZSIS International Thermal Science Seminar II ◽

10.1615/ichmt.2004.intthermscisemin.220 ◽

2004 ◽

Author(s):

Fabio Gori ◽

S. Corasaniti ◽

Vlodek R. Tarnawski

Keyword(s):

Thermal Conductivity ◽

Theoretical Prediction ◽

Frozen Foods

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Transient Models to Analyze the Influence of the Air Velocity and Ducts Diameter on the Performance of Earth-Air Heat Exchangers

International Journal of Fluid Mechanics Research ◽

10.1615/interjfluidmechres.v43.i5-6.100 ◽

2016 ◽

Vol 43 (5-6) ◽

pp. 503-520 ◽

Cited By ~ 5

Author(s):

R. S. Brum ◽

J. V. A. Ramalho ◽

Luiz Alberto O. Rocha ◽

L. A. Isoldi ◽

E. D. dos Santos

Keyword(s):

Heat Exchangers ◽

Air Velocity ◽

Transient Models

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Faculty Opinions recommendation of Theoretical prediction of a crystal structure.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.1001332.15607 ◽

2001 ◽

Author(s):

Michal Brylinski

Keyword(s):

Crystal Structure ◽

Theoretical Prediction

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Karakteristik aliran dua fase pada saluran ekspansi tiba-tiba

Jurnal Teknik Mesin Indonesia ◽

10.36289/jtmi.v11i1.44 ◽

2018 ◽

Vol 11 (1) ◽

pp. 7

Author(s):

Latif Ngudi Wibawanto ◽

Budi Santoso ◽

Wibawa Endra Juwana

Keyword(s):

Standard Deviation ◽

Flow Pattern ◽

Flow Characteristic ◽

Homogeneous Model ◽

Flow Equation ◽

Pressure Recovery ◽

Sudden Expansion ◽

Air Velocity ◽

Model Flow ◽

Two Phases

This research was conducted to find out the flow characteristic of two phases through the channel with sudden expansion in the form of change of flow pattern and pressure recovery. The test was carried out with variation of superficial velocity of water 0.2-1.3 m / s and superficial air velocity of 0.2-1.9 m / s resulting in pattern of three flow patterns ie bubble, plug, and slug. The expansion channel resulted in some changes to the flow pattern that originally plugs in the upstream channel into bubble in the downstream channel and the slug becomes plug. Pressure recovery experimental results compared with the homogeneous model flow equation and Wadle correlation, both correlations have predictions with standard deviation values of 0.32 and 0.43.

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