Eero-Matti Salonen and Rauno Holopainen
Bibliographic info:
The International Journal of Ventilation, Vol. 9 N°2, September 2010

Application of the principle of the balance of mechanical energy gives a constraint on the possible values of the junction coefficients at a duct system junction. In some cases the recorded junction coefficients in the literature do not satisfy this constraint. The values given may then be questionable. The terminology in connection with junctions is discussed and the role of the principle of balance of mechanical energy in duct system flow modelling is considered in some detail.