Document Detail


Dynamics of pressure propulsion of a sphere in a viscous compressible fluid.
MedLine Citation:
PMID:  20707587     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
A mechanical model of pressure propulsion of a sphere in a viscous compressible fluid is studied on the basis of the linearized Navier-Stokes equations. It is assumed that chemical reactions in the neighborhood of the sphere cause pressure waves which push the sphere. A simple expression is derived for the displacement after a single pulse on the basis of a generalized Faxén theorem. The cooperation of many pulses leads to stochastic behavior of the sphere displacement due to randomness in position of the pulses relative to the sphere surface and due to randomness in time of expansion events.
Authors:
B U Felderhof
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of chemical physics     Volume:  133     ISSN:  1089-7690     ISO Abbreviation:  J Chem Phys     Publication Date:  2010 Aug 
Date Detail:
Created Date:  2010-08-16     Completed Date:  2010-12-27     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0375360     Medline TA:  J Chem Phys     Country:  United States    
Other Details:
Languages:  eng     Pagination:  064903     Citation Subset:  -    
Affiliation:
Institut für Theoretische Physik A, RWTH Aachen University, Templergraben 55, 52056 Aachen, Germany. ufelder@physik.rwth-aachen.de
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