Study on the Effects of Hierarchical Wavy Morphology on Clearance Flow

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ZHANG, Xi ;ZHANG, Tianlu ;GENG, Xiangyu ;HONG, Jianfeng ;WU, Jinjun .
Study on the Effects of Hierarchical Wavy Morphology on Clearance Flow. 
Strojniški vestnik - Journal of Mechanical Engineering, [S.l.], v. 65, n.5, p. 276-286, june 2019. 
ISSN 0039-2480.
Available at: <https://www.sv-jme.eu/article/study-on-the-effects-of-hierarchical-wavy-morphology-on-clearance-flow/>. Date accessed: 05 jun. 2020. 
doi:http://dx.doi.org/10.5545/sv-jme.2018.5922.
Zhang, X., Zhang, T., Geng, X., Hong, J., & Wu, J.
(2019).
Study on the Effects of Hierarchical Wavy Morphology on Clearance Flow.
Strojniški vestnik - Journal of Mechanical Engineering, 65(5), 276-286.
doi:http://dx.doi.org/10.5545/sv-jme.2018.5922
@article{sv-jmesv-jme.2018.5922,
	author = {Xi  Zhang and Tianlu  Zhang and Xiangyu  Geng and Jianfeng  Hong and Jinjun  Wu},
	title = {Study on the Effects of Hierarchical Wavy Morphology on Clearance Flow},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {65},
	number = {5},
	year = {2019},
	keywords = {hierarchical sinusoidal morphology, clearance flow, water, leakage},
	abstract = {This paper aims to explore the influences of multilevel sinusoidal structures on clearance flow by using numerical and experimental methods. A hierarchical sinusoidal morphology was proposed to design the gap between matching surfaces in water hydraulic systems. The specimens with the 0th order, the 1st order and the 2nd order sinusoidal structures were machined by a three dimensional (3D) printer, and their clearance leakage flow was tested on a water hydraulic annular clearance test rig. An extensive simulation study on the effects of waved surfaces with varying amplitudes and wavelengths on leakage was presented. Both the experimental and numerical results show that introducing hierarchical morphology on clearance surfaces will reduce leakage. Moreover, it was found that the leakage decreases with the increase of the ratio of the amplitude to wavelength. Further study of the flow field reveals that the leakage reduction of the 2nd order sinusoidal model is obtained due to the extra vortexes of various scales and the narrower width of the main flow and lower velocity. Moreover, our results indicate that the waved surface induces a micro-hydrodynamic effect that creates an additional load carrying capability, which is helpful for separating the matching surfaces to reduce wear. The study is beneficial to investigate the potential for improving efficiency through the optimization of gap design.},
	issn = {0039-2480},	pages = {276-286},	doi = {10.5545/sv-jme.2018.5922},
	url = {https://www.sv-jme.eu/article/study-on-the-effects-of-hierarchical-wavy-morphology-on-clearance-flow/}
}
Zhang, X.,Zhang, T.,Geng, X.,Hong, J.,Wu, J.
2019 June 65. Study on the Effects of Hierarchical Wavy Morphology on Clearance Flow. Strojniški vestnik - Journal of Mechanical Engineering. [Online] 65:5
%A Zhang, Xi 
%A Zhang, Tianlu 
%A Geng, Xiangyu 
%A Hong, Jianfeng 
%A Wu, Jinjun 
%D 2019
%T Study on the Effects of Hierarchical Wavy Morphology on Clearance Flow
%B 2019
%9 hierarchical sinusoidal morphology, clearance flow, water, leakage
%! Study on the Effects of Hierarchical Wavy Morphology on Clearance Flow
%K hierarchical sinusoidal morphology, clearance flow, water, leakage
%X This paper aims to explore the influences of multilevel sinusoidal structures on clearance flow by using numerical and experimental methods. A hierarchical sinusoidal morphology was proposed to design the gap between matching surfaces in water hydraulic systems. The specimens with the 0th order, the 1st order and the 2nd order sinusoidal structures were machined by a three dimensional (3D) printer, and their clearance leakage flow was tested on a water hydraulic annular clearance test rig. An extensive simulation study on the effects of waved surfaces with varying amplitudes and wavelengths on leakage was presented. Both the experimental and numerical results show that introducing hierarchical morphology on clearance surfaces will reduce leakage. Moreover, it was found that the leakage decreases with the increase of the ratio of the amplitude to wavelength. Further study of the flow field reveals that the leakage reduction of the 2nd order sinusoidal model is obtained due to the extra vortexes of various scales and the narrower width of the main flow and lower velocity. Moreover, our results indicate that the waved surface induces a micro-hydrodynamic effect that creates an additional load carrying capability, which is helpful for separating the matching surfaces to reduce wear. The study is beneficial to investigate the potential for improving efficiency through the optimization of gap design.
%U https://www.sv-jme.eu/article/study-on-the-effects-of-hierarchical-wavy-morphology-on-clearance-flow/
%0 Journal Article
%R 10.5545/sv-jme.2018.5922
%& 276
%P 11
%J Strojniški vestnik - Journal of Mechanical Engineering
%V 65
%N 5
%@ 0039-2480
%8 2019-06-20
%7 2019-06-20
Zhang, Xi, Tianlu  Zhang, Xiangyu  Geng, Jianfeng  Hong, & Jinjun  Wu.
"Study on the Effects of Hierarchical Wavy Morphology on Clearance Flow." Strojniški vestnik - Journal of Mechanical Engineering [Online], 65.5 (2019): 276-286. Web.  05 Jun. 2020
TY  - JOUR
AU  - Zhang, Xi 
AU  - Zhang, Tianlu 
AU  - Geng, Xiangyu 
AU  - Hong, Jianfeng 
AU  - Wu, Jinjun 
PY  - 2019
TI  - Study on the Effects of Hierarchical Wavy Morphology on Clearance Flow
JF  - Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2018.5922
KW  - hierarchical sinusoidal morphology, clearance flow, water, leakage
N2  - This paper aims to explore the influences of multilevel sinusoidal structures on clearance flow by using numerical and experimental methods. A hierarchical sinusoidal morphology was proposed to design the gap between matching surfaces in water hydraulic systems. The specimens with the 0th order, the 1st order and the 2nd order sinusoidal structures were machined by a three dimensional (3D) printer, and their clearance leakage flow was tested on a water hydraulic annular clearance test rig. An extensive simulation study on the effects of waved surfaces with varying amplitudes and wavelengths on leakage was presented. Both the experimental and numerical results show that introducing hierarchical morphology on clearance surfaces will reduce leakage. Moreover, it was found that the leakage decreases with the increase of the ratio of the amplitude to wavelength. Further study of the flow field reveals that the leakage reduction of the 2nd order sinusoidal model is obtained due to the extra vortexes of various scales and the narrower width of the main flow and lower velocity. Moreover, our results indicate that the waved surface induces a micro-hydrodynamic effect that creates an additional load carrying capability, which is helpful for separating the matching surfaces to reduce wear. The study is beneficial to investigate the potential for improving efficiency through the optimization of gap design.
UR  - https://www.sv-jme.eu/article/study-on-the-effects-of-hierarchical-wavy-morphology-on-clearance-flow/
@article{{sv-jme}{sv-jme.2018.5922},
	author = {Zhang, X., Zhang, T., Geng, X., Hong, J., Wu, J.},
	title = {Study on the Effects of Hierarchical Wavy Morphology on Clearance Flow},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {65},
	number = {5},
	year = {2019},
	doi = {10.5545/sv-jme.2018.5922},
	url = {https://www.sv-jme.eu/article/study-on-the-effects-of-hierarchical-wavy-morphology-on-clearance-flow/}
}
TY  - JOUR
AU  - Zhang, Xi 
AU  - Zhang, Tianlu 
AU  - Geng, Xiangyu 
AU  - Hong, Jianfeng 
AU  - Wu, Jinjun 
PY  - 2019/06/20
TI  - Study on the Effects of Hierarchical Wavy Morphology on Clearance Flow
JF  - Strojniški vestnik - Journal of Mechanical Engineering; Vol 65, No 5 (2019): Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2018.5922
KW  - hierarchical sinusoidal morphology, clearance flow, water, leakage
N2  - This paper aims to explore the influences of multilevel sinusoidal structures on clearance flow by using numerical and experimental methods. A hierarchical sinusoidal morphology was proposed to design the gap between matching surfaces in water hydraulic systems. The specimens with the 0th order, the 1st order and the 2nd order sinusoidal structures were machined by a three dimensional (3D) printer, and their clearance leakage flow was tested on a water hydraulic annular clearance test rig. An extensive simulation study on the effects of waved surfaces with varying amplitudes and wavelengths on leakage was presented. Both the experimental and numerical results show that introducing hierarchical morphology on clearance surfaces will reduce leakage. Moreover, it was found that the leakage decreases with the increase of the ratio of the amplitude to wavelength. Further study of the flow field reveals that the leakage reduction of the 2nd order sinusoidal model is obtained due to the extra vortexes of various scales and the narrower width of the main flow and lower velocity. Moreover, our results indicate that the waved surface induces a micro-hydrodynamic effect that creates an additional load carrying capability, which is helpful for separating the matching surfaces to reduce wear. The study is beneficial to investigate the potential for improving efficiency through the optimization of gap design.
UR  - https://www.sv-jme.eu/article/study-on-the-effects-of-hierarchical-wavy-morphology-on-clearance-flow/
Zhang, Xi, Zhang, Tianlu, Geng, Xiangyu, Hong, Jianfeng, AND Wu, Jinjun.
"Study on the Effects of Hierarchical Wavy Morphology on Clearance Flow" Strojniški vestnik - Journal of Mechanical Engineering [Online], Volume 65 Number 5 (20 June 2019)

Authors

Affiliations

  • China University of Mining & Technology, Beijing, School of Mechanical Electronic & Information Engineering, China 1
  • China Academy of Machinery Science & Technology, China 2

Paper's information

Strojniški vestnik - Journal of Mechanical Engineering 65(2019)5, 276-286

https://doi.org/10.5545/sv-jme.2018.5922

This paper aims to explore the influences of multilevel sinusoidal structures on clearance flow by using numerical and experimental methods. A hierarchical sinusoidal morphology was proposed to design the gap between matching surfaces in water hydraulic systems. The specimens with the 0th order, the 1st order and the 2nd order sinusoidal structures were machined by a three dimensional (3D) printer, and their clearance leakage flow was tested on a water hydraulic annular clearance test rig. An extensive simulation study on the effects of waved surfaces with varying amplitudes and wavelengths on leakage was presented. Both the experimental and numerical results show that introducing hierarchical morphology on clearance surfaces will reduce leakage. Moreover, it was found that the leakage decreases with the increase of the ratio of the amplitude to wavelength. Further study of the flow field reveals that the leakage reduction of the 2nd order sinusoidal model is obtained due to the extra vortexes of various scales and the narrower width of the main flow and lower velocity. Moreover, our results indicate that the waved surface induces a micro-hydrodynamic effect that creates an additional load carrying capability, which is helpful for separating the matching surfaces to reduce wear. The study is beneficial to investigate the potential for improving efficiency through the optimization of gap design.

hierarchical sinusoidal morphology, clearance flow, water, leakage