A numerical investigation for heat transfer enhancement possibility for a novel perforated twisted hyperbolic turbulator (PTHT) inside a heated tube

This study unveils a specialised swirl flow generator called the twisted hyperbolic turbulator for implementation in heat exchangers. The design of this geometry aims to induce bidirectional swirling flow. The water fluid flows through a heated tube at Reynolds numbers ranging from 2316 to 5096. Thi...

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Main Authors: Bing Mei, Azher M. Abed, Pinank Patel, Ankur Kulshreshta, Hamdi Ayed, Abir Mouldi, Ibrahim Mahariq
Format: Article
Language:English
Published: Elsevier 2025-01-01
Series:Case Studies in Thermal Engineering
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Online Access:http://www.sciencedirect.com/science/article/pii/S2214157X24016976
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author Bing Mei
Azher M. Abed
Pinank Patel
Ankur Kulshreshta
Hamdi Ayed
Abir Mouldi
Ibrahim Mahariq
author_facet Bing Mei
Azher M. Abed
Pinank Patel
Ankur Kulshreshta
Hamdi Ayed
Abir Mouldi
Ibrahim Mahariq
author_sort Bing Mei
collection DOAJ
description This study unveils a specialised swirl flow generator called the twisted hyperbolic turbulator for implementation in heat exchangers. The design of this geometry aims to induce bidirectional swirling flow. The water fluid flows through a heated tube at Reynolds numbers ranging from 2316 to 5096. This study examined the thermal-frictional effects of the new turbulator at various twisting angles ranging from 60 to 360°. The results indicated that as the twist angle rises, heat transfer also increases because of the fluid's intensified swirling and radial motion. Under ideal circumstances, a twist angle of 360° results in a notable increase in heat transfer by 256 % and a pressure drop by 625 %, accompanied by a TEF of 1.84. Longitudinal perforations were added to the selected turbulator at varying dimensionless distances (R = h/r) from the center, ranging from 9 to 3.6, with dimensionless hole diameters (P = h/d) ranging from 9 to 4.5. The results indicated that as the hole distance from the center of the tube increased, the TEF decreased while increasing the diameter of the perforations led to an improvement in TEF. The optimal configuration was found to be at P = 4.5, located at R = 6, resulting in a TEF of 2.02.
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spelling doaj-art-15b5b92566f147c1ae8f6413d0e482112025-01-08T04:52:50ZengElsevierCase Studies in Thermal Engineering2214-157X2025-01-0165105666A numerical investigation for heat transfer enhancement possibility for a novel perforated twisted hyperbolic turbulator (PTHT) inside a heated tubeBing Mei0Azher M. Abed1Pinank Patel2Ankur Kulshreshta3Hamdi Ayed4Abir Mouldi5Ibrahim Mahariq6College of Construction Engineering, Yunnan Agricultural University, Kunming, Yunnan, 650000, China; Corresponding author.Air Conditioning and Refrigeration Techniques Engineering Department, College of Engineering and Technologies, Al-Mustaqbal University, Babylon, 51001, Iraq; Corresponding author. Air Conditioning and Refrigeration Techniques Engineering Department, College of Engineering and Technologies, Al-Mustaqbal University, Babylon, 51001, Iraq.Marwadi University Research Center, Department of Mechanical Engineering, Faculty of Engineering & Technology Marwadi University, Rajkot, 360003, Gujarat, India; Corresponding author.NIMS School of Mechanical and Aerospace Engineering, NIMS University Rajasthan, Jaipur, IndiaDepartment of Civil Engineering, College of Engineering, King Khalid University, Abha, 61421, Saudi ArabiaCollege of Construction Engineering, Yunnan Agricultural University, Kunming, Yunnan, 650000, China; Air Conditioning and Refrigeration Techniques Engineering Department, College of Engineering and Technologies, Al-Mustaqbal University, Babylon, 51001, Iraq; Al - Mustaqbal Center for energy research, Al-Mustaqbal University, Babylon, 51001, Iraq; Marwadi University Research Center, Department of Mechanical Engineering, Faculty of Engineering & Technology Marwadi University, Rajkot, 360003, Gujarat, India; NIMS School of Mechanical and Aerospace Engineering, NIMS University Rajasthan, Jaipur, India; Department of Civil Engineering, College of Engineering, King Khalid University, Abha, 61421, Saudi Arabia; Higher Institute of Transport and Logistics of Sousse, University of Sousse, Sousse, 4023, Tunisia; Department of Industrial Engineering, College of Engineering, King Khalid University, 61421, Abha, Saudi Arabia; GUST Engineering and Applied Innovation Research Center (GEAR), Gulf University for Science and Technology, Mishref, Kuwait; Department of Mathematics, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, 602105, Tamil Nadu, India; Applied Science Research Center, Applied Science Private University, Amman, Jordan; Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, TaiwanGUST Engineering and Applied Innovation Research Center (GEAR), Gulf University for Science and Technology, Mishref, KuwaitThis study unveils a specialised swirl flow generator called the twisted hyperbolic turbulator for implementation in heat exchangers. The design of this geometry aims to induce bidirectional swirling flow. The water fluid flows through a heated tube at Reynolds numbers ranging from 2316 to 5096. This study examined the thermal-frictional effects of the new turbulator at various twisting angles ranging from 60 to 360°. The results indicated that as the twist angle rises, heat transfer also increases because of the fluid's intensified swirling and radial motion. Under ideal circumstances, a twist angle of 360° results in a notable increase in heat transfer by 256 % and a pressure drop by 625 %, accompanied by a TEF of 1.84. Longitudinal perforations were added to the selected turbulator at varying dimensionless distances (R = h/r) from the center, ranging from 9 to 3.6, with dimensionless hole diameters (P = h/d) ranging from 9 to 4.5. The results indicated that as the hole distance from the center of the tube increased, the TEF decreased while increasing the diameter of the perforations led to an improvement in TEF. The optimal configuration was found to be at P = 4.5, located at R = 6, resulting in a TEF of 2.02.http://www.sciencedirect.com/science/article/pii/S2214157X24016976Perforated twisted hyperbolic turbulatorTurbulatorHeat exchangerHeat transferPressure drop
spellingShingle Bing Mei
Azher M. Abed
Pinank Patel
Ankur Kulshreshta
Hamdi Ayed
Abir Mouldi
Ibrahim Mahariq
A numerical investigation for heat transfer enhancement possibility for a novel perforated twisted hyperbolic turbulator (PTHT) inside a heated tube
Case Studies in Thermal Engineering
Perforated twisted hyperbolic turbulator
Turbulator
Heat exchanger
Heat transfer
Pressure drop
title A numerical investigation for heat transfer enhancement possibility for a novel perforated twisted hyperbolic turbulator (PTHT) inside a heated tube
title_full A numerical investigation for heat transfer enhancement possibility for a novel perforated twisted hyperbolic turbulator (PTHT) inside a heated tube
title_fullStr A numerical investigation for heat transfer enhancement possibility for a novel perforated twisted hyperbolic turbulator (PTHT) inside a heated tube
title_full_unstemmed A numerical investigation for heat transfer enhancement possibility for a novel perforated twisted hyperbolic turbulator (PTHT) inside a heated tube
title_short A numerical investigation for heat transfer enhancement possibility for a novel perforated twisted hyperbolic turbulator (PTHT) inside a heated tube
title_sort numerical investigation for heat transfer enhancement possibility for a novel perforated twisted hyperbolic turbulator ptht inside a heated tube
topic Perforated twisted hyperbolic turbulator
Turbulator
Heat exchanger
Heat transfer
Pressure drop
url http://www.sciencedirect.com/science/article/pii/S2214157X24016976
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