Technical Brief

Experimental Investigation of the Full Flow Field in a Molten Salt Pump by Particle Image Velocimetry

[+] Author and Article Information
Chunlei Shao

College of Mechanical and Power Engineering,
Nanjing Tech University,
Nanjing 211816, China
e-mail: chunlei-shao@njtech.edu.cn

Jianfeng Zhou

College of Mechanical and Power Engineering,
Nanjing Tech University,
Nanjing 211816, China
e-mail: zhoujianfeng@njut.edu.cn

Boqin Gu

College of Mechanical and Power Engineering,
Nanjing Tech University,
Nanjing 211816, China
e-mail: bqgu@njtech.edu.cn

Wenjie Cheng

College of Mechanical and Power Engineering,
Nanjing Tech University,
Nanjing 211816, China
e-mail: cwj@njtech.edu.cn

1Corresponding author.

Contributed by the Fluids Engineering Division of ASME for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received April 12, 2014; final manuscript received May 3, 2015; published online June 15, 2015. Assoc. Editor: Peter Vorobieff.

J. Fluids Eng 137(10), 104501 (Oct 01, 2015) (5 pages) Paper No: FE-14-1188; doi: 10.1115/1.4030535 History: Received April 12, 2014; Revised May 03, 2015; Online June 15, 2015

Particle image velocimetry (PIV) technology was used to study steady and unsteady internal flow fields in a molten salt pump under both internal and external synchronization modes. The velocity fields in the suction chamber, impeller passage and volute were analyzed at different flow rates. The velocity distribution uniformity, velocity weighted average divergent flow angle, and circumferential component of absolute velocity were calculated on the basis of the obtained flow fields. The research is meaningful to the development of molten salt pumps, and the experimental method serves as a reference to similar rotating fluid machinery.

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Fig. 1

Schematic diagram of the experimental platform

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Fig. 2

Measurement regions in the volute

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Fig. 3

Velocity vector distribution in the suction chamber at the flow rate 0.2 Qd

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Fig. 4

Relative velocity in the impeller passage: (a) Q = Qd, (b) Q = 0.8Qd, and (c) Q = 0.6Qd

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Fig. 5

Velocity contour in the volute

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Fig. 6

Evolution of velocity in the volute near the volute tongue: (a) α = 10 deg, (b) α = 30 deg, and (c) α = 50 deg

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Fig. 7

Distribution of circumferential velocity in section 8 in the radial direction




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