Investigation of Hydrodynamic Flow Characteristics in Helical Coils with Ovality and Wrinkles

81 Views
74 Downloads
Export citation: ABNT
PERIASAMY, Govindaraj ;MOULEESWARAN, Senthilkumar ;VENUGOPAL, Prabhu Raja ;PERUMAL, Chellapandi .
Investigation of Hydrodynamic Flow Characteristics in Helical Coils with Ovality and Wrinkles. 
Strojniški vestnik - Journal of Mechanical Engineering, [S.l.], v. 67, n.11, p. 570-579, november 2021. 
ISSN 0039-2480.
Available at: <https://www.sv-jme.eu/article/investigation-on-hydrodynamic-flow-characteristics-in-helical-coils-with-ovality-and-wrinkles/>. Date accessed: 29 nov. 2021. 
doi:http://dx.doi.org/10.5545/sv-jme.2021.7374.
Periasamy, G., Mouleeswaran, S., Venugopal, P., & Perumal, C.
(2021).
Investigation of Hydrodynamic Flow Characteristics in Helical Coils with Ovality and Wrinkles.
Strojniški vestnik - Journal of Mechanical Engineering, 67(11), 570-579.
doi:http://dx.doi.org/10.5545/sv-jme.2021.7374
@article{sv-jmesv-jme.2021.7374,
	author = {Govindaraj  Periasamy and Senthilkumar  Mouleeswaran and Prabhu Raja  Venugopal and Chellapandi  Perumal},
	title = {Investigation of Hydrodynamic Flow Characteristics in Helical Coils with Ovality and Wrinkles},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {67},
	number = {11},
	year = {2021},
	keywords = {helical coil, flow characteristics, ovality, wrinkles, computational fluid dynamics},
	abstract = {The forming of helical coils using a rolling process results in geometrical irregularities (wrinkles and ovality) that are likely to influence the hydrodynamic behaviour of the flow field inside the coil in applications such as air generators. In this study, the above behaviour was investigated by experimental and numerical analyses considering the heat exchanger used in dry air generators. In experimental analysis, a three-turn copper helical coil with wrinkles and ovality was investigated to estimate the global hydrodynamic characteristics inside the helical coil. The results were compared with that of the ideal geometry of a coil without wrinkles and ovality. The effect of wrinkles was assessed through friction factor, and the corresponding equivalent surface roughness was found to increase by 5.7 times, owing to the presence of wrinkles in the helical coil. Numerical simulation was conducted to determine the pressure distribution, velocity distribution, and secondary flow inside the helical coil; the results were validated with experimental data. A critical portion of the helical coil with multiple wrinkles was considered for numerical simulation to investigate the localized effects of wrinkles on the flow field behaviour. The analysis in the vicinity of wrinkles revealed negative pressure development during flow, which in turn would cause re-circulation and cavitation that are undesirable.},
	issn = {0039-2480},	pages = {570-579},	doi = {10.5545/sv-jme.2021.7374},
	url = {https://www.sv-jme.eu/article/investigation-on-hydrodynamic-flow-characteristics-in-helical-coils-with-ovality-and-wrinkles/}
}
Periasamy, G.,Mouleeswaran, S.,Venugopal, P.,Perumal, C.
2021 November 67. Investigation of Hydrodynamic Flow Characteristics in Helical Coils with Ovality and Wrinkles. Strojniški vestnik - Journal of Mechanical Engineering. [Online] 67:11
%A Periasamy, Govindaraj 
%A Mouleeswaran, Senthilkumar 
%A Venugopal, Prabhu Raja 
%A Perumal, Chellapandi 
%D 2021
%T Investigation of Hydrodynamic Flow Characteristics in Helical Coils with Ovality and Wrinkles
%B 2021
%9 helical coil, flow characteristics, ovality, wrinkles, computational fluid dynamics
%! Investigation of Hydrodynamic Flow Characteristics in Helical Coils with Ovality and Wrinkles
%K helical coil, flow characteristics, ovality, wrinkles, computational fluid dynamics
%X The forming of helical coils using a rolling process results in geometrical irregularities (wrinkles and ovality) that are likely to influence the hydrodynamic behaviour of the flow field inside the coil in applications such as air generators. In this study, the above behaviour was investigated by experimental and numerical analyses considering the heat exchanger used in dry air generators. In experimental analysis, a three-turn copper helical coil with wrinkles and ovality was investigated to estimate the global hydrodynamic characteristics inside the helical coil. The results were compared with that of the ideal geometry of a coil without wrinkles and ovality. The effect of wrinkles was assessed through friction factor, and the corresponding equivalent surface roughness was found to increase by 5.7 times, owing to the presence of wrinkles in the helical coil. Numerical simulation was conducted to determine the pressure distribution, velocity distribution, and secondary flow inside the helical coil; the results were validated with experimental data. A critical portion of the helical coil with multiple wrinkles was considered for numerical simulation to investigate the localized effects of wrinkles on the flow field behaviour. The analysis in the vicinity of wrinkles revealed negative pressure development during flow, which in turn would cause re-circulation and cavitation that are undesirable.
%U https://www.sv-jme.eu/article/investigation-on-hydrodynamic-flow-characteristics-in-helical-coils-with-ovality-and-wrinkles/
%0 Journal Article
%R 10.5545/sv-jme.2021.7374
%& 570
%P 10
%J Strojniški vestnik - Journal of Mechanical Engineering
%V 67
%N 11
%@ 0039-2480
%8 2021-11-25
%7 2021-11-25
Periasamy, Govindaraj, Senthilkumar  Mouleeswaran, Prabhu Raja  Venugopal, & Chellapandi  Perumal.
"Investigation of Hydrodynamic Flow Characteristics in Helical Coils with Ovality and Wrinkles." Strojniški vestnik - Journal of Mechanical Engineering [Online], 67.11 (2021): 570-579. Web.  29 Nov. 2021
TY  - JOUR
AU  - Periasamy, Govindaraj 
AU  - Mouleeswaran, Senthilkumar 
AU  - Venugopal, Prabhu Raja 
AU  - Perumal, Chellapandi 
PY  - 2021
TI  - Investigation of Hydrodynamic Flow Characteristics in Helical Coils with Ovality and Wrinkles
JF  - Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2021.7374
KW  - helical coil, flow characteristics, ovality, wrinkles, computational fluid dynamics
N2  - The forming of helical coils using a rolling process results in geometrical irregularities (wrinkles and ovality) that are likely to influence the hydrodynamic behaviour of the flow field inside the coil in applications such as air generators. In this study, the above behaviour was investigated by experimental and numerical analyses considering the heat exchanger used in dry air generators. In experimental analysis, a three-turn copper helical coil with wrinkles and ovality was investigated to estimate the global hydrodynamic characteristics inside the helical coil. The results were compared with that of the ideal geometry of a coil without wrinkles and ovality. The effect of wrinkles was assessed through friction factor, and the corresponding equivalent surface roughness was found to increase by 5.7 times, owing to the presence of wrinkles in the helical coil. Numerical simulation was conducted to determine the pressure distribution, velocity distribution, and secondary flow inside the helical coil; the results were validated with experimental data. A critical portion of the helical coil with multiple wrinkles was considered for numerical simulation to investigate the localized effects of wrinkles on the flow field behaviour. The analysis in the vicinity of wrinkles revealed negative pressure development during flow, which in turn would cause re-circulation and cavitation that are undesirable.
UR  - https://www.sv-jme.eu/article/investigation-on-hydrodynamic-flow-characteristics-in-helical-coils-with-ovality-and-wrinkles/
@article{{sv-jme}{sv-jme.2021.7374},
	author = {Periasamy, G., Mouleeswaran, S., Venugopal, P., Perumal, C.},
	title = {Investigation of Hydrodynamic Flow Characteristics in Helical Coils with Ovality and Wrinkles},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {67},
	number = {11},
	year = {2021},
	doi = {10.5545/sv-jme.2021.7374},
	url = {https://www.sv-jme.eu/article/investigation-on-hydrodynamic-flow-characteristics-in-helical-coils-with-ovality-and-wrinkles/}
}
TY  - JOUR
AU  - Periasamy, Govindaraj 
AU  - Mouleeswaran, Senthilkumar 
AU  - Venugopal, Prabhu Raja 
AU  - Perumal, Chellapandi 
PY  - 2021/11/25
TI  - Investigation of Hydrodynamic Flow Characteristics in Helical Coils with Ovality and Wrinkles
JF  - Strojniški vestnik - Journal of Mechanical Engineering; Vol 67, No 11 (2021): Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2021.7374
KW  - helical coil, flow characteristics, ovality, wrinkles, computational fluid dynamics
N2  - The forming of helical coils using a rolling process results in geometrical irregularities (wrinkles and ovality) that are likely to influence the hydrodynamic behaviour of the flow field inside the coil in applications such as air generators. In this study, the above behaviour was investigated by experimental and numerical analyses considering the heat exchanger used in dry air generators. In experimental analysis, a three-turn copper helical coil with wrinkles and ovality was investigated to estimate the global hydrodynamic characteristics inside the helical coil. The results were compared with that of the ideal geometry of a coil without wrinkles and ovality. The effect of wrinkles was assessed through friction factor, and the corresponding equivalent surface roughness was found to increase by 5.7 times, owing to the presence of wrinkles in the helical coil. Numerical simulation was conducted to determine the pressure distribution, velocity distribution, and secondary flow inside the helical coil; the results were validated with experimental data. A critical portion of the helical coil with multiple wrinkles was considered for numerical simulation to investigate the localized effects of wrinkles on the flow field behaviour. The analysis in the vicinity of wrinkles revealed negative pressure development during flow, which in turn would cause re-circulation and cavitation that are undesirable.
UR  - https://www.sv-jme.eu/article/investigation-on-hydrodynamic-flow-characteristics-in-helical-coils-with-ovality-and-wrinkles/
Periasamy, Govindaraj, Mouleeswaran, Senthilkumar, Venugopal, Prabhu Raja, AND Perumal, Chellapandi.
"Investigation of Hydrodynamic Flow Characteristics in Helical Coils with Ovality and Wrinkles" Strojniški vestnik - Journal of Mechanical Engineering [Online], Volume 67 Number 11 (25 November 2021)

Authors

Affiliations

  • PSG College of Technology, Department of Mechanical Engineering, India 1
  • PSG College of Technology, Department of Production Engineering, India 2
  • Indian Institute of Technology Madras, Department of Applied Mechanics, India 3

Paper's information

Strojniški vestnik - Journal of Mechanical Engineering 67(2021)11, 570-579

https://doi.org/10.5545/sv-jme.2021.7374

The forming of helical coils using a rolling process results in geometrical irregularities (wrinkles and ovality) that are likely to influence the hydrodynamic behaviour of the flow field inside the coil in applications such as air generators. In this study, the above behaviour was investigated by experimental and numerical analyses considering the heat exchanger used in dry air generators. In experimental analysis, a three-turn copper helical coil with wrinkles and ovality was investigated to estimate the global hydrodynamic characteristics inside the helical coil. The results were compared with that of the ideal geometry of a coil without wrinkles and ovality. The effect of wrinkles was assessed through friction factor, and the corresponding equivalent surface roughness was found to increase by 5.7 times, owing to the presence of wrinkles in the helical coil. Numerical simulation was conducted to determine the pressure distribution, velocity distribution, and secondary flow inside the helical coil; the results were validated with experimental data. A critical portion of the helical coil with multiple wrinkles was considered for numerical simulation to investigate the localized effects of wrinkles on the flow field behaviour. The analysis in the vicinity of wrinkles revealed negative pressure development during flow, which in turn would cause re-circulation and cavitation that are undesirable.

helical coil, flow characteristics, ovality, wrinkles, computational fluid dynamics