[Hambarharsh10]

I am modelling a continuous stirred tank reactor, with water, which has been simulated at steady state using simpleFoam. after the steady state is achieved, I wanted to calculate the RTD curve for this and the mean residence time for the same. I tried doing so with the help of scalarTransportFoam. I do not want diffusion, therefore I set the value of dT to zero, but the result that I get is wrong. I can say that the result is wrong because the inlet concentration is one with a step input of 1, therefore after some time the outlet concentration must be 1 but it is much lower than that. I would like to know why is this happening. The inlet is at the top right side and the outlet is on the bottom left of the tank. I have attached the concentration vs time plot at the outlet.