Different chemical reactions between Epanet 2 and Epanet 2.2

Hi everyone,

I am trying to model the Water Network with EPANET 2 and EPANET2.2. the result of chemical concentration and time in the nodes of the network in the two versions is different from each other (except in input node), while all the conditions of the network are the same in the two versions. (please see image reference). what is the problem?



Hi, in my opinion, this is related to the detailed difference in hydraulic results between EPANET 2 & EPNAET 2.2 which may make more difference in the quality results; especially in the nodes which have a long distance from the source of contamination. Because the hydraulic differences add during the flow path.