Heat transfer of laminar pulsating flow in a rectangular channel

Blythman, Richard; Persoons, Tim; Jeffers, Nicholas; Murray, Darina B.

doi:10.1016/j.ijheatmasstransfer.2018.08.109

Cited by 29 publications

(11 citation statements)

References 39 publications

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“…An experimental study of pulsating flow in minichannels based on a square pulsation waveform performed by Mehta and Khandekar [2] over the Womersley number range 0.8 ≤ 𝑊 𝑜 ≤ 5.9 found that the heat transfer was reduced compared to that obtained for steady flow. Using an analytical approach Blythman et al [8] studied flow pulsations for a rectangular duct with two constant heat flux long walls for the ranges 1.4 ≤ 𝑊 𝑜 ≤ 22.1 and 0.0035 ≤ 𝐹 0 ≤ 8.77. For high frequency pulsations, no notable transverse diffusion occurred as the temperature profiles were plug-like in the fluid core regions.…”

Section: Heat Transfer Associated With Flow Pulsationsmentioning

confidence: 99%

“…Impinging Oscillating component, [-] the boundary layer in contrast to steady flows. Several studies (e.g., [3][4][5][6]) have postulated a significant heat transfer enhancement while other studies report no or reduced heat transfer (e.g., [2,7,8]). The characteristics of an unsteady pulsating flow are governed by the Womersley number, 𝑊 𝑜, a dimensionless expression of the pulsating flow frequency in relation to viscous effects, and the dimensionless flow rate amplitude, 𝐴 0 , which represents the ratio of the maximum oscillating flow rate (𝑄 * 𝑚𝑎𝑥 ) to the cycle averaged flow rate (𝑄 𝑠 ).…”

Section: Introductionmentioning

confidence: 99%

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A computational conjugate heat transfer study of a rectangular minichannel undergoing sinusoidal flow pulsations

Kumavat

Alimohammadi

O’Shaughnessy

2022

International Journal of Thermal Sciences

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Section: Heat Transfer Associated With Flow Pulsationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A computational conjugate heat transfer study of a rectangular minichannel undergoing sinusoidal flow pulsations

Kumavat

Alimohammadi

O’Shaughnessy

2022

International Journal of Thermal Sciences

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“…Pulsating flow is one of the critical types of flows used early in the analysis of the propagation of sound waves and the study of the sustainability of the laminar flows (Hemida et al , 2002). The analytical solution provided by Blythman et al (2019) was in contrast to the results of the heat transfer of laminar pulsating flow in a rectangular channel. They stated that the heat transfer for the pulse system is reduced.…”

Section: Introductionmentioning

confidence: 95%

Numerical investigation of thermal pulsating alumina/water nanofluid flow over three different cross-sectional channel

Hoseinzadeh

Otaghsara

Khatir

et al. 2019

HFF

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Purpose The purpose of this study is to investigate the pulsating flow in a three-dimensional channel. Channel flow is laminar and turbulent. After validation, the effect of different channel cross-sectional geometries (circular, hexagonal and triangular) with the pulsating flow are investigated. For this purpose, the alumina nanofluid was considered as a working fluid with different volume percentages (0 per cent [pure water], 3 per cent and 5 per cent). Design/methodology/approach In this study, the pulsatile flow was investigated in a three-dimensional channel. Channel flow is laminar and turbulent. Findings The results show that the fluid temperature decreases by increasing the volume percentage of particles of Al2O3; this is because of the fact that the input energy through the wall boundary is a constant value and indicates that with increasing the volume percentage, the fluid can save more energy at a constant temperature. And by adding Al2O3 nanofluid, thermal performance improves in channels, but it should be considered that the use of nanofluid causes a pressure drop in the channel. Originality/value Alumina/water nanofluid with the pulsating flow was investigated and compared in three different cross-sectional channel geometries (circular, hexagonal and triangular). The effect of different volume percentages (0 per cent [pure water], 3 per cent and 5 per cent) of Al2O3 nanofluid on temperature, velocity and pressure are studied.

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“…Yang et al [41] investigated the inlet vapor quality of an evaporator's twophase flow pattern of R134a. Some works presented the transient fluid flow in the ribbed channels [42], in a manifold microchannel heat sink [43], and a rectangular channel [44]. Next, Bizhaem et al [45] investigated the pulsating thermal improvement in the coiled tube, pulsating flow FC-72 heat transfer enhancement [46], and the heat transfer behaviors in the engine [47].…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of the Pulsating Heat Transfer of Ferrofluid in Helically Fluted Tubes

Siricharoenpanitch¹,

Jongpleampiti²,

Naphon³

et al. 2022

MMEP

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The flow and heat transfer characteristics in the corrugated tube mainly depend on flow parameters and geometric configurations of the tube, such as corrugated cross-section, corrugated angle, corrugated arrangement, corrugated pitch and depth, pulsating flow frequency, coolant types, and Reynolds number. This paper presents the pulsating thermal characteristics of ferrofluid flowing in the fluted tube using the de-ionized water and 0.015% by volume as working fluid flowing in the test section. Eulerian two-phase turbulence model validation has been performed in both steady and pulsating flow. The finite volume approach discretizes the Eulerian two-phase model. Numerical results indicate that the longitudinal and transverse secondary flows are induced differently via the pulsating flow. The heat transfer characteristics of pulsating fluid flow are significantly larger than that of continuous fluid flow. A higher pulsating frequency induces a heat transfer enhancement. However, pulsating flow increases pressure due to more flow complexity and rough augmentation. Due to the disturbed fluid flow and higher swirling motion, the heat transfer augmentation increases and corresponds with the published results.

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Heat transfer of laminar pulsating flow in a rectangular channel

Cited by 29 publications

References 39 publications

A computational conjugate heat transfer study of a rectangular minichannel undergoing sinusoidal flow pulsations

A computational conjugate heat transfer study of a rectangular minichannel undergoing sinusoidal flow pulsations

Numerical investigation of thermal pulsating alumina/water nanofluid flow over three different cross-sectional channel

Numerical Analysis of the Pulsating Heat Transfer of Ferrofluid in Helically Fluted Tubes

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