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Research Papers: Flows in Complex Systems

Investigations of Inducers Operating With High Rotational Speed

[+] Author and Article Information
Björn Gwiasda

Department of Mechanical and Process
Engineering,
Institute of Fluid Mechanics and Fluid
Machinery,
University of Kaiserslautern,
Kaiserslautern 67663, Germany
e-mail: gwiasda@mv.uni-kl.de

Matthias Mohr

Department of Mechanical and
Process Engineering,
Institute of Fluid Mechanics
and Fluid Machinery,
University of Kaiserslautern,
Kaiserslautern 67663, Germany
e-mail: matthias.mohr@mv.uni-kl.de

Martin Böhle

Professor
Department of Mechanical and
Process Engineering,
Institute of Fluid Mechanics
and Fluid Machinery,
University of Kaiserslautern,
Kaiserslautern 67663, Germany
e-mail: martin.boehle@mv.uni-kl.de

1Corresponding author.

Contributed by the Fluids Engineering Division of ASME for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received February 28, 2018; final manuscript received October 10, 2018; published online November 8, 2018. Assoc. Editor: Olivier Coutier-Delgosha.

J. Fluids Eng 141(4), 041102 (Nov 08, 2018) (10 pages) Paper No: FE-18-1133; doi: 10.1115/1.4041730 History: Received February 28, 2018; Revised October 10, 2018

Suction performance, pressure rise, and efficiency for four different inducers are examined with computational fluid dynamics (CFD) simulations and experiments performed with 18,000 rpm and 24,000 rpm. The studies originate from a research project that includes the construction of a new test bench in order to judge the design of the different inducers. This test bench allows to conduct experiments with a rotational speed of up to 40,000 rpm and high pressure ranges from 0.1 bar to 40 bar with water as working fluid. Experimental results are used to evaluate the accuracy of the simulations and to gain a better understanding of the design parameter. The influence of increasing the rotating speed from 18,000 rpm to 24,000 rpm on the performance is also shown.

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References

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Figures

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Fig. 3

Inducers—from left to right: A0, M0, M1, and M2

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Fig. 2

Inducer angle definition

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Fig. 1

Main dimensions of the inducers

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Fig. 7

Measurement section

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Fig. 8

Comparison of CFD and EXP at 18,000 rpm

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Fig. 11

Suction performance at 18,000 rpm (experiment)

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Fig. 12

A0 suction performance (σc ≈ 0.04)

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Fig. 13

M0 suction performance (σc ≈ 0.04)

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Fig. 14

M1 suction performance (σc ≈ 0.04)

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Fig. 15

M2 suction performance (σc ≈ 0.04)

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Fig. 24

A024k suction performance (σc = 0.048)

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Fig. 25

A024k suction performance (σc = 0.0275)

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Fig. 26

A024k suction performance (σc = 0.0207)

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Fig. 20

A0—head coefficient (experiment)

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Fig. 21

A0—efficiency (experiment)

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Fig. 22

A0—suction performance (experiment)

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Fig. 23

A024k suction performance (σc = 0.192)

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Fig. 16

M0 design point (φ = 0.1, σc ≈ 0.35)

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Fig. 17

A0—head coefficient at 24,000 rpm

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Fig. 18

A0—efficiency at 24,000 rpm

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Fig. 19

A0—suction performance at 24,000 rpm

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Fig. 9

Head coefficient at 18,000 rpm (experiment)

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Fig. 10

Efficiency at 18,000 rpm (experiment)

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