Non-Newtonian stagnation flow with mass injection (Stagnation flow of nonNewtonian power law type fluid with wall mass injection to reduce viscous drag)

1968 ◽  
Vol 2 (4) ◽  
pp. 221-223 ◽  
Author(s):  
ARSEV H. ERASLAN ◽  
KUN HA KlM
Keyword(s):  
Power Law ◽  
Viscous Drag ◽  
Stagnation Flow ◽  
Mass Injection ◽  
Wall Mass

Computer simulation of three-dimensional transport during moistened defatted soy flour processing in the metering section of a single-screw extruder

2000 ◽  
Vol 214 (2) ◽  
pp. 335-349 ◽  
Author(s):  
P S Ghoshdastidar ◽  
G Ghai ◽  
R P Chhabra
Keyword(s):  
Power Law ◽  
Plug Flow ◽  
Three Dimensional ◽  
Soy Flour ◽  
Viscous Drag ◽  
Three Dimensional Model ◽  
Screw Extruder ◽  
Defatted Soy Flour ◽  
Single Screw ◽  
Single Screw Extruder

A quasi-three-dimensional steady state finite-volume-based computer model for a power-law fluid is used to describe the three-dimensional transport during the processing of defatted soy flour with 25, 28 and 33 per cent moisture contents by weight in the metering section of a single-screw extruder. The numerical results have been compared with the earlier experimental results of Fong. The results are found to be reliable only for the highest moisture content dough (33 per cent by weight). The conclusion is that the quasi-three-dimensional model showing a viscous drag flow mechanism using a power-law equation for viscosity may be effectively used for predicting the behaviour of moist doughs during the extrusion process while the same model may not be very reliable for drier doughs which show plug flow behaviour during processing.

Flow of a Non-Newtonian Fluid past Wedges with Wall Mass Injection

1969 ◽  
Vol 3 (1) ◽  
pp. 57-59 ◽  
Author(s):  
KUN HA KIM ◽  
ARSEV H. ERASLAN
Keyword(s):  
Newtonian Fluid ◽  
Mass Injection ◽  
Wall Mass

Analysis of power law assumptions for short-period comets and Kuiper bodies

1999 ◽  
Vol 173 ◽  
pp. 289-293 ◽  
Author(s):  
J.R. Donnison ◽  
L.I. Pettit
Keyword(s):  
Power Law ◽  
Pareto Distribution ◽  
Limited Data ◽  
Short Period ◽  
Probability Plots ◽  
Exponential Probability

AbstractA Pareto distribution was used to model the magnitude data for short-period comets up to 1988. It was found using exponential probability plots that the brightness did not vary with period and that the cut-off point previously adopted can be supported statistically. Examination of the diameters of Trans-Neptunian bodies showed that a power law does not adequately fit the limited data available.

The effects of strain and strain rate on residual microstructures in copper

1986 ◽  
Vol 44 ◽  
pp. 420-421
Author(s):  
M. F. Stevens ◽  
P. S. Follansbee
Keyword(s):  
Strain Rate ◽  
Applied Stress ◽  
Threshold Stress ◽  
Rate Sensitivity ◽  
Viscous Drag ◽  
Strain Rates ◽  
Strain And Strain Rate ◽  
Threshold Strength ◽  
Mechanism Transition ◽  
Intrinsic Strength

The strain rate sensitivity of a variety of materials is known to increase rapidly at strain rates exceeding ∼103 sec-1. This transition has most often in the past been attributed to a transition from thermally activated guide to viscous drag control. An important condition for imposition of dislocation drag effects is that the applied stress, σ, must be on the order of or greater than the threshold stress, which is the flow stress at OK. From Fig. 1, it can be seen for OFE Cu that the ratio of the applied stress to threshold stress remains constant even at strain rates as high as 104 sec-1 suggesting that there is not a mechanism transition but that the intrinsic strength is increasing, since the threshold strength is a mechanical measure of intrinsic strength. These measurements were made at constant strain levels of 0.2, wnich is not a guarantee of constant microstructure. The increase in threshold stress at higher strain rates is a strong indication that the microstructural evolution is a function of strain rate and that the dependence becomes stronger at high strain rates.

Sign in / Sign up

Export Citation Format

Share Document