Publication Date:
2018-07-31
Description:
Vertical self-priming pump has numerous advantages and has been widely used in industrial and agricultural areas. Nevertheless, impeller in single-stage self-priming pump bears large diameter and huge friction loss in the delivery of high-lift fluid, and enhanced requirement for sealing capacity meanwhile generates greater increment of power loss from sealing auxiliary-impeller and sealing ring. Both of these have resulted in low efficiency in operation, to the extent of imposing restriction on the further application of self-priming pump. In this paper, a new design of double-stage vertical self-priming pump with two impellers settled back to back was put forward to cover the shortfalls above. The internal flow field was calculated adopting realizable k-ε turbulence model in commercial CFD software Fluent and performance prediction was conducted. Concurrently, two-phase flow inside this self-priming pump without backflow hole was calculated by gas-liquid two-phase unsteady simu...
Print ISSN:
1755-1307
Electronic ISSN:
1755-1315
Topics:
Geography
,
Geosciences
,
Physics
