Computational fluid dynamics analysis of a V-rib with gap roughened solar air heater

Computational fluid dynamics analysis of a V-rib with gap roughened solar air heater

A CFD analysis of a solar air heater has been carried out using V-shaped ribs as artificial roughness on the absorber plate. The relative roughness pitch, P/e = 6-12, Reynolds number of 3800-18000, relative roughness height, e/D = = 0.042, and angle of attack, α = 30°-75°, have been selected as desi...

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Main Authors: Rana Jitesh, Silori Anshuman, Maithani Rajesh, Chamoli Sunil
Format: Article
Language:English
Published: VINCA Institute of Nuclear Sciences 2018-01-01
Series:Thermal Science
Subjects:
Nusselt Number
Friction Factor
CFD
V-ribs
Online Access:http://www.doiserbia.nb.rs/img/doi/0354-9836/2018/0354-98361700010R.pdf
id doaj-10c6292d2a174c89a7d0dacbbae75a45
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spelling doaj-10c6292d2a174c89a7d0dacbbae75a452021-01-02T00:00:50ZengVINCA Institute of Nuclear SciencesThermal Science0354-98362334-71632018-01-0122296397210.2298/TSCI160831010R0354-98361700010RComputational fluid dynamics analysis of a V-rib with gap roughened solar air heaterRana Jitesh0Silori Anshuman1Maithani Rajesh2Chamoli Sunil3DIT University, Department of Mechanical Engineering, Dehradun, IndiaDIT University, Department of Mechanical Engineering, Dehradun, IndiaDIT University, Department of Mechanical Engineering, Dehradun, IndiaDIT University, Department of Mechanical Engineering, Dehradun, IndiaA CFD analysis of a solar air heater has been carried out using V-shaped ribs as artificial roughness on the absorber plate. The relative roughness pitch, P/e = 6-12, Reynolds number of 3800-18000, relative roughness height, e/D = = 0.042, and angle of attack, α = 30°-75°, have been selected as design variables of V-shaped rib for analysis. The ANSYS FLUENT 15.0 with renormalization group k-ε turbulence model is selected for the analysis of computational domain of solar air heater. The enhancement of Nusselt number and friction factor with Reynolds number for different values of a relative roughness pitch are presented and discussed by CFD analysis. The effect of angle of attack and Reynolds number on enhancement of Nusselt number and friction factor is also presented. The optimum value of rib configuration based on constant pumping power requirement has been derived using thermohydraulic performance parameter and has been found maximum at angle of attack of 60° and P/e = 10.http://www.doiserbia.nb.rs/img/doi/0354-9836/2018/0354-98361700010R.pdfNusselt NumberFriction FactorCFDV-ribs
collection DOAJ
language English
format Article
sources DOAJ
author Rana Jitesh
Silori Anshuman
Maithani Rajesh
Chamoli Sunil
spellingShingle Rana Jitesh
Silori Anshuman
Maithani Rajesh
Chamoli Sunil
Computational fluid dynamics analysis of a V-rib with gap roughened solar air heater
Thermal Science
Nusselt Number
Friction Factor
CFD
V-ribs
author_facet Rana Jitesh
Silori Anshuman
Maithani Rajesh
Chamoli Sunil
author_sort Rana Jitesh
title Computational fluid dynamics analysis of a V-rib with gap roughened solar air heater
title_short Computational fluid dynamics analysis of a V-rib with gap roughened solar air heater
title_full Computational fluid dynamics analysis of a V-rib with gap roughened solar air heater
title_fullStr Computational fluid dynamics analysis of a V-rib with gap roughened solar air heater
title_full_unstemmed Computational fluid dynamics analysis of a V-rib with gap roughened solar air heater
title_sort computational fluid dynamics analysis of a v-rib with gap roughened solar air heater
publisher VINCA Institute of Nuclear Sciences
series Thermal Science
issn 0354-9836
2334-7163
publishDate 2018-01-01
description A CFD analysis of a solar air heater has been carried out using V-shaped ribs as artificial roughness on the absorber plate. The relative roughness pitch, P/e = 6-12, Reynolds number of 3800-18000, relative roughness height, e/D = = 0.042, and angle of attack, α = 30°-75°, have been selected as design variables of V-shaped rib for analysis. The ANSYS FLUENT 15.0 with renormalization group k-ε turbulence model is selected for the analysis of computational domain of solar air heater. The enhancement of Nusselt number and friction factor with Reynolds number for different values of a relative roughness pitch are presented and discussed by CFD analysis. The effect of angle of attack and Reynolds number on enhancement of Nusselt number and friction factor is also presented. The optimum value of rib configuration based on constant pumping power requirement has been derived using thermohydraulic performance parameter and has been found maximum at angle of attack of 60° and P/e = 10.
topic Nusselt Number
Friction Factor
CFD
V-ribs
url http://www.doiserbia.nb.rs/img/doi/0354-9836/2018/0354-98361700010R.pdf
work_keys_str_mv AT ranajitesh computationalfluiddynamicsanalysisofavribwithgaproughenedsolarairheater
AT silorianshuman computationalfluiddynamicsanalysisofavribwithgaproughenedsolarairheater
AT maithanirajesh computationalfluiddynamicsanalysisofavribwithgaproughenedsolarairheater
AT chamolisunil computationalfluiddynamicsanalysisofavribwithgaproughenedsolarairheater
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