Mass transfer in the film-flow zone of a centrifugal extractor with time-varying angular velocity

2000 ◽  
Vol 34 (1) ◽  
pp. 64-69 ◽  
Author(s):  
S. I. Ponikarov ◽  
D. N. Grishin
Keyword(s):  
Mass Transfer ◽  
Angular Velocity ◽  
Film Flow ◽  
Time Varying ◽  
Flow Zone ◽  
Centrifugal Extractor

Study of Simultaneous Mass Transfer and Nucleation in Cryogenic Packed Bed for the Removal of CO2 from Natural Gas

2014 ◽  
Vol 625 ◽  
pp. 229-232 ◽  
Author(s):  
Abul Hassan Ali ◽  
Atif Muhammad Ashraf ◽  
Azmi Mohd Shariff ◽  
Saibal Ganguly
Keyword(s):  
Mass Transfer ◽  
Natural Gas ◽  
Packed Bed ◽  
Time Dependent ◽  
Time Varying ◽  
Simulation Studies ◽  
Avrami Model ◽  
Bed Porosity ◽  
Nucleation Model ◽  
Frost Layer

The paper presents the concept of cryogenic growth kinetics during separation of CO2from natural gas using Avrami nucleation model. The interface frost layer on the glass packing of cryogenic bed is assumed asgerm nuclei. The bed porosity is considered time dependent. The expression for time varying bed porosity is derived based on Avrami model. The experimentation was conducted to validate the model and the resulting simulation studies show good resemblance with experimental results.

Hydrodynamic and mass transfer studies of 125 mm centrifugal extractor with 30% TBP/nitric acid system

2015 ◽  
Vol 85 ◽  
pp. 1-10 ◽  
Author(s):  
Kinkar Mandal ◽  
Shekhar Kumar ◽  
V. Vijayakumar ◽  
U. Kamachi Mudali ◽  
A. Ravisankar ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Nitric Acid ◽  
Acid System ◽  
Centrifugal Extractor ◽  
Mass Transfer Studies

Liquid film flow on structured wires: Fluid dynamics and gas-side mass transfer

AIChE Journal ◽  
2012 ◽  
Vol 59 (1) ◽  
pp. 295-302 ◽  
Author(s):  
J. Grünig ◽  
S.-J. Kim ◽  
M. Kraume
Keyword(s):  
Fluid Dynamics ◽  
Mass Transfer ◽  
Liquid Film ◽  
Film Flow ◽  
Liquid Film Flow

scholarly journals Dynamics of eye movements under time varying stimuli

2018 ◽  
Vol 11 (1) ◽  
Author(s):  
Verica Radisavljevic-Gajic
Keyword(s):  
Mathematical Model ◽  
Eye Movements ◽  
Time Delay ◽  
Angular Velocity ◽  
Second Order ◽  
Time Varying ◽  
First Order ◽  
Linear Dynamic ◽  
Delay Elements ◽  
Range Of Values

In this paper we study the pure-slow and pure-fast dynamics of the disparity convergence of the eye movements second-order linear dynamic mathematical model under time varying stimuli. Performing simulation of the isolated pure-slow and pure-fast dynamics, it has been observed that the pure-fast component corresponding to the eye angular velocity displays abrupt and very fast changes in a very broad range of values. The result obtained is specific for the considered second-order mathematical model that does not include any saturation elements nor time-delay elements. The importance of presented results is in their mathematical simplicity and exactness. More complex mathematical models can be built starting with the presented pure-slow and pure-fast first-order models by appropriately adding saturation and time-delay elements independently to the identified isolated pure-slow and pure-fast first-order models.

The Generation of Contact Surfaces of Indexing Cam Mechanisms: A Unified Approach

1990 ◽  
Author(s):  
M. A. Gonzalez-Palacios ◽  
J. Angeles ◽  
Ch. Cai
Keyword(s):  
Angular Velocity ◽  
Velocity Ratio ◽  
Rigid Bodies ◽  
Ruled Surfaces ◽  
Time Varying ◽  
Unified Approach ◽  
Unified Framework ◽  
Spatial Mechanisms ◽  
Contact Surfaces

Abstract In this paper the ruled surfaces of two rigid bodies that are in contact while moving with a prescribed time-varying angular-velocity ratio are generated. These are then used as the contact surfaces of indexing cam mechanisms. In this way, planar, spherical and spatial mechanisms can be synthesized in a unified framework. The approach is illustrated with various examples.

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