Effect of roughness shape on heat transfer and flow friction characteristics of solar air heater with roughened absorber plate

A. Chaube, P.K. Sahoo, S.C. Solanki

Research output: Contribution to conferencePaper

8 Citations (Scopus)

Abstract

A 2-D computational analysis is carried out to assess the comparative performance of the absorber plate of a solar air heater with different roughness elements using commercial software package Fluent 6.1. The assessment is based on heat transfer enhancement with minimum pressure penalty. Ten different rib shapes (viz. Rectangular, Square, Chamfered, Triangular, Semicircle etc) are investigated at the Reynolds number range from about 3000-20000, in which solar air heaters normally operate. The SST kω turbulence model is selected by comparing the predictions of different turbulence models with experimental results available in the literature. Using the selected turbulence model a computational analysis is carried out to predict the heat transfer performance and flow friction characteristics of absorber plates with 10 different rib roughness elements. The analysis is carried out for both the flow regimes i.e. transitional flow regime (5 ≤ e+ ≤ 70) and fully rough regime (e- ≥ 70). © 2006 WIT Press.
Original languageEnglish
Pages43-51
Number of pages9
DOIs
Publication statusPublished - 2006

Fingerprint

Turbulence models
Surface roughness
Friction
Heat transfer
Air
Software packages
Reynolds number

Cite this

@conference{118b0bebd6824827807e1f69ab685005,
title = "Effect of roughness shape on heat transfer and flow friction characteristics of solar air heater with roughened absorber plate",
abstract = "A 2-D computational analysis is carried out to assess the comparative performance of the absorber plate of a solar air heater with different roughness elements using commercial software package Fluent 6.1. The assessment is based on heat transfer enhancement with minimum pressure penalty. Ten different rib shapes (viz. Rectangular, Square, Chamfered, Triangular, Semicircle etc) are investigated at the Reynolds number range from about 3000-20000, in which solar air heaters normally operate. The SST kω turbulence model is selected by comparing the predictions of different turbulence models with experimental results available in the literature. Using the selected turbulence model a computational analysis is carried out to predict the heat transfer performance and flow friction characteristics of absorber plates with 10 different rib roughness elements. The analysis is carried out for both the flow regimes i.e. transitional flow regime (5 ≤ e+ ≤ 70) and fully rough regime (e- ≥ 70). {\circledC} 2006 WIT Press.",
author = "A. Chaube and P.K. Sahoo and S.C. Solanki",
note = "Cited By :7 Export Date: 19 June 2018",
year = "2006",
doi = "10.2495/HT060051",
language = "English",
pages = "43--51",

}

Effect of roughness shape on heat transfer and flow friction characteristics of solar air heater with roughened absorber plate. / Chaube, A.; Sahoo, P.K.; Solanki, S.C.

2006. 43-51.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Effect of roughness shape on heat transfer and flow friction characteristics of solar air heater with roughened absorber plate

AU - Chaube, A.

AU - Sahoo, P.K.

AU - Solanki, S.C.

N1 - Cited By :7 Export Date: 19 June 2018

PY - 2006

Y1 - 2006

N2 - A 2-D computational analysis is carried out to assess the comparative performance of the absorber plate of a solar air heater with different roughness elements using commercial software package Fluent 6.1. The assessment is based on heat transfer enhancement with minimum pressure penalty. Ten different rib shapes (viz. Rectangular, Square, Chamfered, Triangular, Semicircle etc) are investigated at the Reynolds number range from about 3000-20000, in which solar air heaters normally operate. The SST kω turbulence model is selected by comparing the predictions of different turbulence models with experimental results available in the literature. Using the selected turbulence model a computational analysis is carried out to predict the heat transfer performance and flow friction characteristics of absorber plates with 10 different rib roughness elements. The analysis is carried out for both the flow regimes i.e. transitional flow regime (5 ≤ e+ ≤ 70) and fully rough regime (e- ≥ 70). © 2006 WIT Press.

AB - A 2-D computational analysis is carried out to assess the comparative performance of the absorber plate of a solar air heater with different roughness elements using commercial software package Fluent 6.1. The assessment is based on heat transfer enhancement with minimum pressure penalty. Ten different rib shapes (viz. Rectangular, Square, Chamfered, Triangular, Semicircle etc) are investigated at the Reynolds number range from about 3000-20000, in which solar air heaters normally operate. The SST kω turbulence model is selected by comparing the predictions of different turbulence models with experimental results available in the literature. Using the selected turbulence model a computational analysis is carried out to predict the heat transfer performance and flow friction characteristics of absorber plates with 10 different rib roughness elements. The analysis is carried out for both the flow regimes i.e. transitional flow regime (5 ≤ e+ ≤ 70) and fully rough regime (e- ≥ 70). © 2006 WIT Press.

U2 - 10.2495/HT060051

DO - 10.2495/HT060051

M3 - Paper

SP - 43

EP - 51

ER -