Computational Model for Water Hammer Disaster - Advances in Control and Automation of Water Systems - page 153

9

Computational Model for
Water Hammer Disaster

contens

9.1 Introduction ...................................................................................................................154
9.2 Materials And Methods ..................................................................................................155
9.2.1 Experimental (Field Tests Model Criteria) .........................................................155
9.2.2 Approaches To Transient Flow (Method Of Characteristics “Moc” Model) ......155
9.3 Results And Discussion ..................................................................................................157
9.4 Conclusion ......................................................................................................................162
9.4.1 Comparison Of Present Research Results With Other Expert's Research .........164
9.4.2 Air Entrance Approaches ....................................................................................164
Keywords .................................................................................................................................166
References ................................................................................................................................166

nomenclAtures
t = time (s)
λ 0 = unit of length
p = pressure (N/m2)
V = velocity (m/s)
S = length (m)
D = diameter of each pipe (m)
R = pipe radius (m)
γ = specific weight (N/m3)
ν = fluid dynamic viscosity (kg/m.s)
hp = head gain from a pump (m)
hL = combined head loss (m)
P = surge pressure (m)
ρ = density (kg/m3)
C = velocity of surge wave (m/s)
P/γ = pressure head (m)
Z = elevation head (m)
V 2/2 = velocity head (m)
P = pressure (N/m2),
γ = specific weight, (N/m3)