MathGroup Archive 2008

[Date Index] [Thread Index] [Author Index]

Search the Archive

NDSolve problem

  • To: mathgroup at
  • Subject: [mg86569] NDSolve problem
  • From: Payal Sheth <itsmepayal at>
  • Date: Thu, 13 Mar 2008 20:53:45 -0500 (EST)

Hello everyone,

I am trying to simulate a chemical reaction to be solved using simulataneous differential equation shown below

ProCat[0]=8A10,Pro[0]==0, Cat[0]==0, Compd[0]==0, ProCatCompd[0=
]==0},{Pro,Cat,ProCatCompd,Compd, ProCat}, {t,0,10000}, MaxSteps=AE 100000]

To this, I would like to add a restriction Pro[t]+ProCat[t]+ProCatCompd[t]=10.

Basically, at t=0, the reactant is ProCat=10, which as the reaction progresses with time is broken down into different products. However, the total reactant+product concentration shouldn't exceed the initial reactant concentration. I am unable to keep that condition under the currect setup that I have. For example, at different Compd concentration, at certain time points I have >10 of Prot+ProCat+ProCatCompd

Can anyone tell me how I could add the restriction to my differential equations?


  • Prev by Date: Re: question on Cases with elements that might be strings
  • Next by Date: RE: Puzzled by the "Variance"
  • Previous by thread: Re: NotebookClose
  • Next by thread: Re: NDSolve problem