Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

The hydraulic cavitation affected by nanoparticles in nanofluids

Chen, Min Rui ; Qian, Jin Yuan LU orcid ; Wu, Zan LU ; Yang, Chen ; Jin, Zhi Jiang and Sunden, Bengt LU (2018) In Computation 6(3).
Abstract

When liquids flow through a throttling element, the velocity increases and the pressure decreases. At this point, if the pressure is below the saturated vapor pressure of this liquid, the liquid will vaporize into small bubbles, causing hydraulic cavitation. In fact, a vaporization nucleus is another crucial condition for vaporizing, and particles contained in the liquid can also work as the vaporization nuclear. As a novel heat transfer medium, nanofluids have attracted the attention of many scholars. The nanoparticles contained in the nanofluids play a significant role in the vaporization of liquids. In this paper, the effects of the nanoparticles on hydraulic cavitation are investigated. Firstly, a geometric model of a perforated... (More)

When liquids flow through a throttling element, the velocity increases and the pressure decreases. At this point, if the pressure is below the saturated vapor pressure of this liquid, the liquid will vaporize into small bubbles, causing hydraulic cavitation. In fact, a vaporization nucleus is another crucial condition for vaporizing, and particles contained in the liquid can also work as the vaporization nuclear. As a novel heat transfer medium, nanofluids have attracted the attention of many scholars. The nanoparticles contained in the nanofluids play a significant role in the vaporization of liquids. In this paper, the effects of the nanoparticles on hydraulic cavitation are investigated. Firstly, a geometric model of a perforated plate, the throttling element in this paper, is established. Then with different nanoparticle volume fractions and diameters, the nanofluids flowing through the perforated plate are numerically simulated based on a validated numerical method. The operation conditions, such as the ratio of inlet to outlet pressures and the temperature are the considered variables. Additionally, cavitation numbers under different operating conditions are achieved to investigate the effects of nanoparticles on hydraulic cavitation. Meanwhile, the contours are extracted to research the distribution of bubbles for further investigation. This study is of interest for researchers working on hydraulic cavitation or nanofluids.

(Less)
Please use this url to cite or link to this publication:
author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Computational fluid dynamics, Hydraulic cavitation, Nanofluids, Perforated plate
in
Computation
volume
6
issue
3
article number
44
pages
12 pages
publisher
MDPI AG
external identifiers
  • scopus:85053754806
ISSN
2079-3197
DOI
10.3390/computation6030044
language
English
LU publication?
yes
id
40a31e58-6e70-4bb4-89a6-c418472c2543
date added to LUP
2018-10-12 13:40:15
date last changed
2021-09-22 04:15:08
@article{40a31e58-6e70-4bb4-89a6-c418472c2543,
  abstract     = {<p>When liquids flow through a throttling element, the velocity increases and the pressure decreases. At this point, if the pressure is below the saturated vapor pressure of this liquid, the liquid will vaporize into small bubbles, causing hydraulic cavitation. In fact, a vaporization nucleus is another crucial condition for vaporizing, and particles contained in the liquid can also work as the vaporization nuclear. As a novel heat transfer medium, nanofluids have attracted the attention of many scholars. The nanoparticles contained in the nanofluids play a significant role in the vaporization of liquids. In this paper, the effects of the nanoparticles on hydraulic cavitation are investigated. Firstly, a geometric model of a perforated plate, the throttling element in this paper, is established. Then with different nanoparticle volume fractions and diameters, the nanofluids flowing through the perforated plate are numerically simulated based on a validated numerical method. The operation conditions, such as the ratio of inlet to outlet pressures and the temperature are the considered variables. Additionally, cavitation numbers under different operating conditions are achieved to investigate the effects of nanoparticles on hydraulic cavitation. Meanwhile, the contours are extracted to research the distribution of bubbles for further investigation. This study is of interest for researchers working on hydraulic cavitation or nanofluids.</p>},
  author       = {Chen, Min Rui and Qian, Jin Yuan and Wu, Zan and Yang, Chen and Jin, Zhi Jiang and Sunden, Bengt},
  issn         = {2079-3197},
  language     = {eng},
  number       = {3},
  publisher    = {MDPI AG},
  series       = {Computation},
  title        = {The hydraulic cavitation affected by nanoparticles in nanofluids},
  url          = {http://dx.doi.org/10.3390/computation6030044},
  doi          = {10.3390/computation6030044},
  volume       = {6},
  year         = {2018},
}