A New Approach for Experimental Determination of an Injectant Mass Fraction Distribution in a Supersonic Flow with Turbulent Mixing

2005 ◽  
Author(s):  
Alexander Gonor ◽  
Mikhail Gilinsky ◽  
Vitali Khaikine ◽  
James Gottlieb ◽  
Isaiah Blankson
Keyword(s):  
Supersonic Flow ◽  
Experimental Determination ◽  
Turbulent Mixing ◽  
Mass Fraction ◽  
New Approach ◽  
Fraction Distribution

Experimental determination of the kinematic viscosity of glycerol-water mixtures

1994 ◽  
Vol 444 (1922) ◽  
pp. 573-581 ◽  
Keyword(s):  
Experimental Determination ◽  
Liquid State ◽  
Mass Fraction ◽  
Kinematic Viscosity ◽  
Limited Data ◽  
Glycerol Water ◽  
Mass Fractions ◽  
Comparative Accuracy ◽  
Water Glycerol

We have measured the kinematic viscosity of glycerol-water mixtures, for glycerol mass fractions ranging from 0 to 1, in the temperature range 10-50 °C. The measurements were made by using a series of Ubbelohde viscometers. Apart from comprehensiveness and comparative accuracy the present measurements expose serious errors in the limited data that were earlier available on such mixtures. It is shown that all the data can be reasonably represented by the empirical correlation (In ν m - In ν w )/(In ν g - In ν w ) = x g [1 + (1 - x g ) { a + bx g + cx g 2 }], where ν w , v g and ν m are the kinematic viscosities of water, glycerol and the mixture respectively and x g is the mass fraction of glycerol in the mixture. The constants a, b and c are tabulated in the paper as functions of temperature. This correlation can now be used at a given temperature to tailor make a mixture of prescribed kinematic viscosity. While this paper is addressed, principally, to fluid dynamicists these results should be of interest to physicists studying the liquid state and physical chemists interested in mixtures.

scholarly journals Internet of things and machine parts laboratory

2018 ◽  
Vol 184 ◽  
pp. 02009
Author(s):  
Dan Ioan Țarcă ◽  
Radu Cătălin Țarcă ◽  
Ioan Constantin ȚarcȚ
Keyword(s):  
Friction Coefficient ◽  
Internet Of Things ◽  
Experimental Determination ◽  
Controlled System ◽  
New Approach ◽  
Machine Parts ◽  
The Way

Internet of Things (IoT) is a relatively new approach. Due to its wide spreading and simplicity it has a various number of application, practically in every domain. This paper aims to present the way in which a classic stand can be transformed into a microprocessor-controlled system. The chosen stand is related to experimental determination of the friction coefficient and efficiency for a threaded mechanism.

Experimental Determination of Aircraft Structural Material Life Envelope

2011 ◽  
Vol 299-300 ◽  
pp. 1198-1202
Author(s):  
Hai Wei Zhang ◽  
Yu Ting He ◽  
Li Ming Wu ◽  
Qing Shao ◽  
Jin Qiang Du
Keyword(s):  
Fatigue Life ◽  
Structural Material ◽  
Experimental Determination ◽  
New Approach ◽  
Interactive Process ◽  
Material Life ◽  
Service Environment ◽  
Key Factor ◽  
Damage Theory

A new approach to reflect the relation of aircraft structural calendar life and fatigue life is established by pre-corrosion and fatigue test with 2A12 alloy specimens. The corrosion factor curve is fitted from the test, and then aircraft structural corrosion and fatigue interactive process during actual in-service environment is simulated. Furthermore, combining with Miner linear cumulative damage theory and the method of ‘calendar life tending to minimum’, life envelope is found. The result shows that flight strength is the key factor for aircraft structural life, and the envelope can be used to realize single aircraft structural life surveillance.

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