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Numerical Study of New Small-twist Tape Insert on Heat Transfer and Pressure Drop for Laminar Flow Inside Circular Pipe

In this study, thermal performance of the laminar flow inside pipe with proposed small twisted tape insert is studied numerically by using computational fluid dynamic software. The proposed insert consists of three-and five-small twisted tapes insert that are arranged in radially symmetry pattern. T...

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Main Authors: Ng Y.L., Alzakri A.
Other Authors: 58081874600
Format: Article
Published: Penerbit Akademia Baru 2024
Subjects:
Laminar Flow
Pipe Insert
Radially Symmetry Insert
Small-twisted Tape
Zero-thickness Model
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spelling my.uniten.dspace-343582024-10-14T11:19:16Z Numerical Study of New Small-twist Tape Insert on Heat Transfer and Pressure Drop for Laminar Flow Inside Circular Pipe Ng Y.L. Alzakri A. 58081874600 58552934700 Laminar Flow Pipe Insert Radially Symmetry Insert Small-twisted Tape Zero-thickness Model In this study, thermal performance of the laminar flow inside pipe with proposed small twisted tape insert is studied numerically by using computational fluid dynamic software. The proposed insert consists of three-and five-small twisted tapes insert that are arranged in radially symmetry pattern. These group of inserts are then arranged along the pipe with gap spacing S to generate continuous flow disturbance. The inserts are proposed to be modelled as zero-thickness layer to reduce the computational cost. The proposed zero-thickness model is validated by compare the with the results of 1mm-model and reference experimental results. The zero-thickness model is then implemented on the proposed insert design for numerical study. Compare with plain twisted tape insert, Nusselt number of the new design is increases by the range of approximately 0.07-42.7% for three-small tapes design, and 4.7-48.0% for five-small tapes design. Performance evaluation criteria (PEC) of present design ranging from 2.23.7 for three-small tapes design, and 2.65-3.65 for five-small tapes design. The proposed insert is found to have more advantage over plain twisted tape at lower Reynolds number, reflected by more significant increase in PEC at lower Reynolds number. From the result of friction factor and PEC, the optimum gap distance of insert group is found to be 50 mm. � 2023, Penerbit Akademia Baru. All rights reserved. Final 2024-10-14T03:19:16Z 2024-10-14T03:19:16Z 2023 Article 10.37934/cfdl.15.2.87100 2-s2.0-85147042684 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85147042684&doi=10.37934%2fcfdl.15.2.87100&partnerID=40&md5=c1eca27c24796511f2bd1b43bd5825e9 https://irepository.uniten.edu.my/handle/123456789/34358 15 2 87 100 All Open Access Hybrid Gold Open Access Penerbit Akademia Baru Scopus
institution Universiti Tenaga Nasional
building UNITEN Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Tenaga Nasional
content_source UNITEN Institutional Repository
url_provider http://dspace.uniten.edu.my/
topic Laminar Flow
Pipe Insert
Radially Symmetry Insert
Small-twisted Tape
Zero-thickness Model
spellingShingle Laminar Flow
Pipe Insert
Radially Symmetry Insert
Small-twisted Tape
Zero-thickness Model
Ng Y.L.
Alzakri A.
Numerical Study of New Small-twist Tape Insert on Heat Transfer and Pressure Drop for Laminar Flow Inside Circular Pipe
description In this study, thermal performance of the laminar flow inside pipe with proposed small twisted tape insert is studied numerically by using computational fluid dynamic software. The proposed insert consists of three-and five-small twisted tapes insert that are arranged in radially symmetry pattern. These group of inserts are then arranged along the pipe with gap spacing S to generate continuous flow disturbance. The inserts are proposed to be modelled as zero-thickness layer to reduce the computational cost. The proposed zero-thickness model is validated by compare the with the results of 1mm-model and reference experimental results. The zero-thickness model is then implemented on the proposed insert design for numerical study. Compare with plain twisted tape insert, Nusselt number of the new design is increases by the range of approximately 0.07-42.7% for three-small tapes design, and 4.7-48.0% for five-small tapes design. Performance evaluation criteria (PEC) of present design ranging from 2.23.7 for three-small tapes design, and 2.65-3.65 for five-small tapes design. The proposed insert is found to have more advantage over plain twisted tape at lower Reynolds number, reflected by more significant increase in PEC at lower Reynolds number. From the result of friction factor and PEC, the optimum gap distance of insert group is found to be 50 mm. � 2023, Penerbit Akademia Baru. All rights reserved.
author2 58081874600
author_facet 58081874600
Ng Y.L.
Alzakri A.
format Article
author Ng Y.L.
Alzakri A.
author_sort Ng Y.L.
title Numerical Study of New Small-twist Tape Insert on Heat Transfer and Pressure Drop for Laminar Flow Inside Circular Pipe
title_short Numerical Study of New Small-twist Tape Insert on Heat Transfer and Pressure Drop for Laminar Flow Inside Circular Pipe
title_full Numerical Study of New Small-twist Tape Insert on Heat Transfer and Pressure Drop for Laminar Flow Inside Circular Pipe
title_fullStr Numerical Study of New Small-twist Tape Insert on Heat Transfer and Pressure Drop for Laminar Flow Inside Circular Pipe
title_full_unstemmed Numerical Study of New Small-twist Tape Insert on Heat Transfer and Pressure Drop for Laminar Flow Inside Circular Pipe
title_sort numerical study of new small-twist tape insert on heat transfer and pressure drop for laminar flow inside circular pipe
publisher Penerbit Akademia Baru
publishDate 2024
_version_ 1814061117878566912
score 13.222552

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