Effect of Secondary Vortex Flow Near Contact Point on Thermal Performance in the Plate Heat Exchanger with Different Corrugation Profiles

The present study numerically investigates thermal performance and turbulent flow characteristics of chevron-type plate heat exchangers with sinusoidal, trapezoidal, triangular, and elliptical corrugation profiles. The commercial code of ANSYS Fluent (v. 17.0) is used for computational fluid dynamic...

Full description

Bibliographic Details
Main Authors: Hyung Ju Lee, Seong Hyuk Lee
Format: Article
Language:English
Published: MDPI AG 2020-03-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/13/6/1328
_version_ 1817991935192727552
author Hyung Ju Lee
Seong Hyuk Lee
author_facet Hyung Ju Lee
Seong Hyuk Lee
author_sort Hyung Ju Lee
collection DOAJ
description The present study numerically investigates thermal performance and turbulent flow characteristics of chevron-type plate heat exchangers with sinusoidal, trapezoidal, triangular, and elliptical corrugation profiles. The commercial code of ANSYS Fluent (v. 17.0) is used for computational fluid dynamics (CFD) simulation with the realizable <i>k</i>-<i>&#949;</i> model. In particular, we focus on the influence of configuration shape on a substantial change in flow direction near the contact point, yielding local vorticity. As a result, secondary vortical motions are observed in the flow passage with vorticity that is distributed locally and which changes near the contact point. Higher flow mixing generated and distributed by the secondary vortical motions contributes to the increase of the Colburn <i>j</i>-factor as well as the friction factor. The highest Colburn <i>j</i>-factor and friction factor are obtained for an elliptical profile, compared to other shapes, because of the increase in the vortex strength near the contact point.
first_indexed 2024-04-14T01:19:45Z
format Article
id doaj.art-930baea114274327a38fd8ca81b71c83
institution Directory Open Access Journal
issn 1996-1073
language English
last_indexed 2024-04-14T01:19:45Z
publishDate 2020-03-01
publisher MDPI AG
record_format Article
series Energies
spelling doaj.art-930baea114274327a38fd8ca81b71c832022-12-22T02:20:42ZengMDPI AGEnergies1996-10732020-03-01136132810.3390/en13061328en13061328Effect of Secondary Vortex Flow Near Contact Point on Thermal Performance in the Plate Heat Exchanger with Different Corrugation ProfilesHyung Ju Lee0Seong Hyuk Lee1School of Mechanical Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, KoreaSchool of Mechanical Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, KoreaThe present study numerically investigates thermal performance and turbulent flow characteristics of chevron-type plate heat exchangers with sinusoidal, trapezoidal, triangular, and elliptical corrugation profiles. The commercial code of ANSYS Fluent (v. 17.0) is used for computational fluid dynamics (CFD) simulation with the realizable <i>k</i>-<i>&#949;</i> model. In particular, we focus on the influence of configuration shape on a substantial change in flow direction near the contact point, yielding local vorticity. As a result, secondary vortical motions are observed in the flow passage with vorticity that is distributed locally and which changes near the contact point. Higher flow mixing generated and distributed by the secondary vortical motions contributes to the increase of the Colburn <i>j</i>-factor as well as the friction factor. The highest Colburn <i>j</i>-factor and friction factor are obtained for an elliptical profile, compared to other shapes, because of the increase in the vortex strength near the contact point.https://www.mdpi.com/1996-1073/13/6/1328plate heat exchangercomputational fluid dynamics (cfd)corrugation profilecolburn <i>j</i>-factorfriction factor
spellingShingle Hyung Ju Lee
Seong Hyuk Lee
Effect of Secondary Vortex Flow Near Contact Point on Thermal Performance in the Plate Heat Exchanger with Different Corrugation Profiles
Energies
plate heat exchanger
computational fluid dynamics (cfd)
corrugation profile
colburn <i>j</i>-factor
friction factor
title Effect of Secondary Vortex Flow Near Contact Point on Thermal Performance in the Plate Heat Exchanger with Different Corrugation Profiles
title_full Effect of Secondary Vortex Flow Near Contact Point on Thermal Performance in the Plate Heat Exchanger with Different Corrugation Profiles
title_fullStr Effect of Secondary Vortex Flow Near Contact Point on Thermal Performance in the Plate Heat Exchanger with Different Corrugation Profiles
title_full_unstemmed Effect of Secondary Vortex Flow Near Contact Point on Thermal Performance in the Plate Heat Exchanger with Different Corrugation Profiles
title_short Effect of Secondary Vortex Flow Near Contact Point on Thermal Performance in the Plate Heat Exchanger with Different Corrugation Profiles
title_sort effect of secondary vortex flow near contact point on thermal performance in the plate heat exchanger with different corrugation profiles
topic plate heat exchanger
computational fluid dynamics (cfd)
corrugation profile
colburn <i>j</i>-factor
friction factor
url https://www.mdpi.com/1996-1073/13/6/1328
work_keys_str_mv AT hyungjulee effectofsecondaryvortexflownearcontactpointonthermalperformanceintheplateheatexchangerwithdifferentcorrugationprofiles
AT seonghyuklee effectofsecondaryvortexflownearcontactpointonthermalperformanceintheplateheatexchangerwithdifferentcorrugationprofiles