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Table 2

Characteristics of first cycle of water hammer downsurge in Figure 4 

ParametersOriginal systemConfigurations of the controlled systems
Conventional inline technique
Conventional branching technique
Dual inline techniqueCompound inline technique
Steel main pipe(HDPE)(LDPE)(HDPE)(LDPE)(LDPE-LDPE)(LDPE-HDPE)
Hmax (m) 63.7 42.9 33.3 46.6 34.9 40.1 37.9 
Hmin (m) −10.3 −3.1 8.5 −5.6 7.3 1.6 3.9 
T (s) 0.535 1.120 1.800 1.020 1.790 1.235 1.370 
ParametersOriginal systemConfigurations of the controlled systems
Conventional inline technique
Conventional branching technique
Dual inline techniqueCompound inline technique
Steel main pipe(HDPE)(LDPE)(HDPE)(LDPE)(LDPE-LDPE)(LDPE-HDPE)
Hmax (m) 63.7 42.9 33.3 46.6 34.9 40.1 37.9 
Hmin (m) −10.3 −3.1 8.5 −5.6 7.3 1.6 3.9 
T (s) 0.535 1.120 1.800 1.020 1.790 1.235 1.370 
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