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    STUDIA CHEMIA - Issue no. 4 / 2008  
         
  Article:   DIMENSIONLESS ANALYSIS OF THE FREE DROP MOVEMENT AT LOW REYNOLDS NUMBER.

Authors:  MARIA TOMOAIA-COTISEL, AURELIA STAN, IOAN-RĂDUCAN STAN.
 
       
         
  Abstract:  

We report on the movement of a free drop at low Reynolds number, initially at rest, by methods of similarity theory and non-dimensional analysis. Because the drop is motionless, we have introduced as scale velocity, a characteristic velocity, Uc, and a new dimensionless number, Ch, which is related to Reynolds number. This permits us to evaluate the Marangoni force in the dimensionless form, as well as the deformation, the translational motion and even the break up of a free drop, under surfactants adsorption.

 

Keywords: drop deformation, drop break up, surfactant adsorption, dimensionless number, Marangoni force.

 
         
     
         
         
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