The Adiabatic Bulk Modulus of Normal Paraffin Hydrocarbons From Hexane to Hexadecane

1960 ◽  
Vol 82 (3) ◽  
pp. 635-642 ◽  
Author(s):  
R. E. Rolling ◽  
C. J. Vogt
Keyword(s):  
Bulk Modulus ◽  
Kinematic Viscosity ◽  
Sonic Velocity ◽  
Test Medium ◽  
Velocity Measurements ◽  
Normal Paraffin ◽  
Rolling Ball ◽  
Absolute Viscosity ◽  
Time Required ◽  
Rolling Ball Viscometer

A method for determining the sonic velocity in a fluid as a function of pressure and temperature is described. The method used measures the time required for an expansion wave to travel a known distance through the test medium. The results of the sonic velocity measurements are presented for normal hydrocarbons from C6 to C16 for temperatures and pressures from 60 to 250 F and 0 to 5000 psig, respectively. The density of the hydrocarbons was also determined. The absolute viscosity of the test compounds was determined by use of a rolling-ball viscometer for pressures from 0 to 6000 psig in the temperature range given. Tabulated and graphical results are presented for adiabatic bulk modulus, density, and absolute and kinematic viscosity for the range of hydrocarbons tested.

Rolling Ball Viscometer

1943 ◽  
Vol 15 (3) ◽  
pp. 212-218 ◽  
Author(s):  
Robert Hubbard ◽  
George Brown
Keyword(s):  
Rolling Ball ◽  
Rolling Ball Viscometer

A VISCOMETRIC METHOD FOR THE ESTIMATION OF MILK CELL COUNT

1970 ◽  
Vol 33 (8) ◽  
pp. 351-354
Author(s):  
W. G. Whittlestone ◽  
L. R. Fell ◽  
H. De Langen
Keyword(s):  
Cell Count ◽  
Correlation Coefficient ◽  
Coefficient Of Variation ◽  
Rolling Ball ◽  
Simple Apparatus ◽  
Microscopic Count ◽  
Rolling Ball Viscometer

The use of a rolling ball viscometer to estimate the cell count of milk treated with California Mastitis Reagent is described. The method compares favorably with the direct microscopic count and requires relatively simple apparatus and unskilled operators. A correlation coefficient for mean count and log viscometer time of 0.93 with a coefficient of variation of 8.1% were obtained. The repeatability of viscometer readings was 0.97.

A New, Accurate Method for the Measurement of Rise Velocities in Laminar Flames

1978 ◽  
Vol 32 (4) ◽  
pp. 377-380 ◽  
Author(s):  
Charles B. Boss ◽  
Gary M. Hieftje
Keyword(s):  
Alkaline Earth ◽  
Accurate Method ◽  
Laminar Flames ◽  
New Technique ◽  
Flame Velocity ◽  
Atomic Vapor ◽  
Velocity Measurements ◽  
Alkaline Earth Elements ◽  
Time Required ◽  
Small Cloud

A novel technique is introduced for the measurement of rise velocities of hot, laminar flames. The new technique is straightforward to implement, rapid to employ, and more accurate than previous methods based on the observation of moving heated particles. In the method, tiny individual droplets of a solution containing alkali or alkaline earth elements are repetitively introduced into the flame to be examined. The small cloud of atomic vapor which is produced upon atomization of a droplet is then monitored photometrically as it passes two well-defined points in the flame. Knowledge of the distance between the points and measurement of the time required for the atoms to traverse it thus enables the flame velocity to be calculated. Conveniently, velocity measurements with this technique are localized in the flame, thereby permitting spatial variations in flame velocity to be examined. Moreover, the negligible mass of the moving, measured atom cloud eliminates error otherwise caused by gravitational attraction and its decelerating effect. The utility of this new technique is demonstrated through the measurement of localized velocities in a laminar, air-acetylene flame.

A High Pressure Rolling-Ball Viscometer up to 1 GPa

1986 ◽  
Vol 25 (Part 1, No. 7) ◽  
pp. 1091-1096 ◽  
Author(s):  
Masaya Izuchi ◽  
Ken Nishibata
Keyword(s):  
High Pressure ◽  
Rolling Ball ◽  
Rolling Ball Viscometer
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