Recent content by burcuugur

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    Mathematica How can I fix the sign issue in my NDSolve command in Mathematica?

    Sorry for that. I attached it now.
  2. B

    Mathematica How can I fix the sign issue in my NDSolve command in Mathematica?

    Hi, I'm trying to model a process by making mass and energy balances using the NDSolve. It reaches the maximum number of steps It is working when I put "-" sign in front of this [Rho]p*(1 - ec)*\[CapitalDelta]H*D[q[z, t], t] (in 3rd equation) in the NDSolve command. But it should be "+"...