Publication detail

Influence of recirculation on Y-Q characteristic curve of hydrodynamic pump

KLAS, R. POCHYLÝ, F. RUDOLF, P.

English title

Influence of recirculation on Y-Q characteristic curve of hydrodynamic pump

Type

conference paper

Language

en

Original abstract

Contribution is focused on discussion of different design modifications of the volute, impeller and rotor-stator cavity in case of very low specific speed pump with recirculation channels. Amount of the liquid flowing through the recirculation channels has significant effect on delivery height, stability of the head curve and hydraulic efficiency. Analysis of these effects is based on the evaluation of the dissipated power in different internal parts of the pump and for different flow rates. It has already been proved in our previous research that volute has substantial impact on stability of the head curve. It is apparent that similar effect can also be attributed to distribution and shape of the recirculation channels. This fact is connected with the inflow into the channels and with magnitude of the flow rate through the recirculation channels. Influence of mentioned parameters on recirculation is discussed in present paper.

English abstract

Contribution is focused on discussion of different design modifications of the volute, impeller and rotor-stator cavity in case of very low specific speed pump with recirculation channels. Amount of the liquid flowing through the recirculation channels has significant effect on delivery height, stability of the head curve and hydraulic efficiency. Analysis of these effects is based on the evaluation of the dissipated power in different internal parts of the pump and for different flow rates. It has already been proved in our previous research that volute has substantial impact on stability of the head curve. It is apparent that similar effect can also be attributed to distribution and shape of the recirculation channels. This fact is connected with the inflow into the channels and with magnitude of the flow rate through the recirculation channels. Influence of mentioned parameters on recirculation is discussed in present paper.

Keywords in English

low specif speed pump, recirculation channels, volute

Released

28.03.2016

Publisher

EPJ Web of Conferences

ISSN

2100-014X

Book

EPJ Web of Conferences

Volume

114

Number

02054

Pages from–to

1–6

Pages count

6

BIBTEX


@inproceedings{BUT124706,
  author="Roman {Klas} and František {Pochylý} and Pavel {Rudolf},
  title="Influence of recirculation on Y-Q characteristic curve of hydrodynamic pump",
  booktitle="EPJ Web of Conferences",
  year="2016",
  volume="114",
  number="02054",
  month="March",
  pages="1--6",
  publisher="EPJ Web of Conferences",
  issn="2100-014X"
}