Abstract
To study the significance of internal pressure pulsation characteristics between prototype and model pump devices, monitoring of computational fluid dynamics and dynamic measurement of a model were...
Highlights
Axial-flow pumps are widely used because of the advantages of a small engineering investment, a simple structure, easy installation and maintenance, and stable operation.[1,2,3]In recent years, with more and more applications of axial-flow pumps,[4] much attention has been paid to its efficiency, safety, and stability
This study shows that the pressure pulsation waves in the last three of the six cycles of pump remain stable
The numerical calculation results and pressure pulsation test of model pump show that the amplitudes of testpoints 3 and 4 in the inlet impeller are very symmetrical
Summary
Axial-flow pumps are widely used because of the advantages of a small engineering investment, a simple structure, easy installation and maintenance, and stable operation.[1,2,3]. The numerical calculation results and pressure pulsation test of model pump show that the amplitudes of testpoints 3 and 4 in the inlet impeller are very symmetrical. The results of numerical calculation and pressure pulsation test of model pump shown in Figure 22 indicate that as the flow changes, the pressure pulsation of blade frequency clearly changes. The results of numerical simulation and pressure pulsation test of model pump show that the change in frequency amplitude of inlet speaker and blade is consistent. The results of numerical calculation and pressure pulsation test of model pump shown in Figure 23 indicate that at testpoints 3 and 4, as the flow decreases, the pressure pulsation of impeller frequency increases. The results of numerical simulation and pressure pulsation test of model pump show that the change in frequency amplitude of inlet impeller is consistent. It is important to study this phenomenon that can effectively avoid safety accidents and guide the design of box-type axial-flow pumps
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