Phoretic self-propulsion of Janus disks in the fast-reaction limit

2020 ◽  
Vol 5 (11) ◽  
Author(s):  
Ehud Yariv ◽  
Darren Crowdy
2003 ◽  
Vol 28 (5-6) ◽  
pp. 1113-1133 ◽  
Author(s):  
Miguel Escobedo ◽  
Philippe Laurençot ◽  
Stéphane Mischler

Author(s):  
A. De Masi ◽  
T. Funaki ◽  
E. Presutti ◽  
M. E. Vares

Author(s):  
Artur Stephan

AbstractWe perform a fast-reaction limit for a linear reaction-diffusion system consisting of two diffusion equations coupled by a linear reaction. We understand the linear reaction-diffusion system as a gradient flow of the free energy in the space of probability measures equipped with a geometric structure, which contains the Wasserstein metric for the diffusion part and cosh-type functions for the reaction part. The fast-reaction limit is done on the level of the gradient structure by proving EDP-convergence with tilting. The limit gradient system induces a diffusion system with Lagrange multipliers on the linear slow-manifold. Moreover, the limit gradient system can be equivalently described by a coarse-grained gradient system, which induces a diffusion equation with a mixed diffusion constant for the coarse-grained slow variable.


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