Determination of a single set of unlike pair potential interaction force constants from dilute gas thermodynamic and transport property data

AIChE Journal ◽  
1970 ◽  
Vol 16 (3) ◽  
pp. 490-492 ◽  
Author(s):  
Alexander T. Hu ◽  
Patsy S. Chappelear ◽  
Riki Kobayashi
Keyword(s):  
Transport Property ◽  
Pair Potential ◽  
Interaction Force ◽  
Potential Interaction ◽  
Force Constants ◽  
Dilute Gas ◽  
Property Data ◽  
Single Set

Unlike pair potential interaction force constants for hydrogen-light hydrocarbon systems

AIChE Journal ◽  
1975 ◽  
Vol 21 (1) ◽  
pp. 173-175 ◽  
Author(s):  
T.-C. Chu ◽  
Patsy S. Chappelear ◽  
Riki Kobayashi
Keyword(s):  
Pair Potential ◽  
Interaction Force ◽  
Potential Interaction ◽  
Light Hydrocarbon ◽  
Force Constants

Determination of Force Constants of Octahedral XY6 Molecules by the GF Matrix Method

2005 ◽  
Vol 60 (11-12) ◽  
pp. 819-822 ◽  
Author(s):  
Fatih Ucun ◽  
M. Gökhan Şengül
Keyword(s):  
Matrix Method ◽  
Molar Mass ◽  
Interaction Force ◽  
Force Constants ◽  
Complex Ions ◽  
Slowing Down ◽  
The Matrix ◽  
The Difference ◽  
Raphson Method

The force constants of the internal coordinates of octahedral XY6 molecules and complex ions were calculated by using the GF matrix method. The matrix solutions were found by means of a computer program using the Newton-Raphson method. From the calculations it has been observed that the bond stretch force constants of octahedral XF6 molecules and XY6 complex ions having the same centre X atom decrease with the increasing molar mass of the centre X atom for the former and the ligand Y atom for the latter, respectively. This was attributed to the slowing down of the molecule with increasing molar mass of the molecule as the whole. In addition we have concluded that the difference of squares of the vibration frequencies ν1 and ν2 of octahedral XY6 complex ions decreases with the increasing mass of the Y atom since the interaction force constant of these ions decreases with the increasing mass.

The determination of force constants from isotopic frequencies using parameter representation

1973 ◽  
Vol 16 (1) ◽  
pp. 149-157 ◽  
Author(s):  
T.R. Ananthakrishnan ◽  
C.P. Girijavallabhan ◽  
G. Aruldhas
Keyword(s):  
Force Constants ◽  
Parameter Representation

Determination of the Force Constants of Non-linear XY2 Molecules in the Gas-Phase by the GF Matrix Method

2004 ◽  
Vol 59 (9) ◽  
pp. 621-622 ◽  
Author(s):  
Fatih Ucun ◽  
Vesile Gūçlü
Keyword(s):  
Gas Phase ◽  
Condensed Phase ◽  
Matrix Method ◽  
Solid Phase ◽  
Force Constants ◽  
Matrix Solution ◽  
The Matrix ◽  
Newton Raphson ◽  
Raphson Method

The force constants of the internal coordinates of nonlinear XY2 molecules in the gas-phase were calculated by using the GF matrix method. The matrix solution was carried out by means a computer program built relative to the Newton-Raphson method and the calculations were listed in a table. The force constants of some molecules in the liquidand solid- phase were also found and compared with these ones, and it was seen that the force constants for more condensed phase are lower as in an agreement with having its lower frequency.

Determination of a line of critical points via a transport property

1971 ◽  
Vol 34 (7) ◽  
pp. 352-353 ◽  
Author(s):  
A. Fote ◽  
E. Domb ◽  
S. Bakanowski ◽  
T. Mihalisin ◽  
J. Crow
Keyword(s):  
Transport Property ◽  
Critical Points ◽  
Line Of Critical Points

The role of solution chemistry in the stability and detachment of cohesive kaolinite particles

2001 ◽  
Vol 1 (1) ◽  
pp. 25-32 ◽  
Author(s):  
V. Ravisangar ◽  
B.M. Brouckaert ◽  
A. Amirtharajah ◽  
T.W. Sturm
Keyword(s):  
Granular Media ◽  
Interaction Force ◽  
Solution Chemistry ◽  
Force Model ◽  
Concentrated Suspensions ◽  
Sediment Deposits ◽  
The Stability ◽  
Relationship Of ◽  
Filter Backwashing

The effect of solution chemistry on the behavior of kaolinite in three different situations was investigated: (1) the detachment of kaolinite from glass beads in a fluidized bed, (2) the erosion of kaolinite deposits in a laboratory flume and (3) the determination of the stress-strain rate relationship of concentrated suspensions in a rheometer. The experimental results from these three different approaches could be explained in terms of changes in mode of particle associations which in turn could be characterized in terms of a micromechanical force model which predicts the effect of solution chemistry on the interaction force between adjacent particle surfaces. Understanding the relationship between solution and surface chemistry on the structure, mechanical strength and mechanism of erosion of cohesive sediment deposits is an important step towards developing predictive models of a number of processes including erosion of cohesive sediments in streams and estuaries, and detachment of particles from granular media during filtration and filter backwashing.

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