<< Click to Display Table of Contents >> Navigation:  Wadiso 6 User Guide > Time/Water quality simulation > Wadiso Time/WQ Data definition > Reaction Settings

The Reactions Settings in the time/WQ simulation data dictates the types of reactions that apply to the water quality analysis. Bulk-, Wall- and Tank Reaction Orders can be specified.

 

A Limiting Concentration coefficient can be defined, which specifies that reaction rates are proportional to the difference between the current concentration and this limiting concentration. The default is 0.

 

The Wall Roughness Correlation coefficient will make all default pipe wall reaction coefficients be related to pipe roughness, in the following manner:

 

Head Loss Equation                        Roughness Correlation

Hazen-Williams                        F / C

Darcy-Weisbach                        F / log(e/D)

 

where F = roughness coefficient, C = Hazen-Williams C-factor, e = Darcy-Weisbach roughness, D = pipe diameter. The default value, computed this way, can be overridden for any pipe by a specific value for the pipe. The default is 0.