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 March 14th, 2011, 08:10 AM #1 Newbie   Joined: Mar 2011 Posts: 1 Thanks: 0 Time evolution of a diffusion equation Hallo everyone, I have a 1-D diffusion equation with decay as dA/dt = d2A/dx2-L*A with initial condition A(x,t=0)=A0= K*exp(-ax), K= constant, and boundary condition= -DdA/dx = b(constant) (t > 0) where L= decay constant A = certain concentration D = diffusion coefficient One can solve the above equation for equilibrium putting dA/dt=0. The equilibrium concentration can be reached in time t. How can I determine the time that it takes to reach equilibrium concentration? Thank you help would be greatly appriciated Tags diffusion, equation, evolution, time Thread Tools Show Printable Version Email this Page Display Modes Linear Mode Switch to Hybrid Mode Switch to Threaded Mode Similar Threads Thread Thread Starter Forum Replies Last Post zFADwww7 Computer Science 0 December 19th, 2013 03:18 AM Lee Applied Math 0 December 8th, 2013 10:00 AM rajiv1 Linear Algebra 0 March 27th, 2013 04:14 AM mcovalt Calculus 0 May 21st, 2011 01:18 PM germanaries Applied Math 0 November 15th, 2007 01:53 PM

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