Pressure Pulsations of the Blade Region in S-Shaped Shaft-Extension Tubular Pumping System

Table 1

Experimental and predicted results.

Flow coefficient 𝐾𝑄	Test results 𝐾𝐻	Unsteady prediction 𝐾𝐻	Deviation/%
0.368	1.249	1.222	2.16
0.402	1.143	1.107	3.15
0.460	0.945	0.964	2.01
0.508	0.761	0.774	1.71
0.552	0.529	0.524	0.95
Flow coefficient 𝐾𝑄	Test results 𝜂/%	Unsteady prediction 𝜂/%	Deviation/%
0.368	69.92	71.10	1.69
0.402	75.72	74.87	1.12
0.460	81.66	81.57	0.11
0.508	81.23	80.47	0.94
0.552	70.02	72.17	3.07