Two-equation versus Reynolds-stress modeling in predicting flow and heat transfer in a smooth U-duct with and without rotation

X. Gu, Horng-Wen Wu, H. J. Schock, T. I.P. Shih

Research output: Contribution to conferencePaper

8 Citations (Scopus)

Abstract

Computations were performed by using Version 5.5 of the Fluent-UNS code to compare two turbulence models in predicting the three-dimensional flow and heat transfer in a smooth duct of square cross section with a small radius of curvature 180-degree bend under rotating and non-rotating conditions (Re = 25,000; Ro = 0.0 and 0.24). The two turbulence models investigated are the standard k-ε model and a Reynolds stress model. For both models, the two-layer low-Reynolds model of Chen and Patel was used in the near-wall region. Results obtained show that though the k-ε model predicts turbulence quantities incorrectly, the predicted velocity and temperature fields and the surface heat transfer are similar to those from the Reynolds stress model when there is no rotation. When there is rotation, there is significant difference in the predicted surface heat transfer on the leading surface. But, the predicted flow field is still qualitatively similar.

Original languageEnglish
Pages1115-1124
Number of pages10
DOIs
Publication statusPublished - 2002 Dec 1
EventASME TURBO EXPO 2002: Heat Transfer, Manufacturing Materials and Metallurgy - Amsterdam, Netherlands
Duration: 2002 Jun 32002 Jun 6

Other

OtherASME TURBO EXPO 2002: Heat Transfer, Manufacturing Materials and Metallurgy
CountryNetherlands
CityAmsterdam
Period02-06-0302-06-06

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Reynolds equation
Ducts
Heat transfer
Turbulence models
Flow fields
Temperature distribution

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Gu, X., Wu, H-W., Schock, H. J., & Shih, T. I. P. (2002). Two-equation versus Reynolds-stress modeling in predicting flow and heat transfer in a smooth U-duct with and without rotation. 1115-1124. Paper presented at ASME TURBO EXPO 2002: Heat Transfer, Manufacturing Materials and Metallurgy, Amsterdam, Netherlands. https://doi.org/10.1115/GT2002-30616
Gu, X. ; Wu, Horng-Wen ; Schock, H. J. ; Shih, T. I.P. / Two-equation versus Reynolds-stress modeling in predicting flow and heat transfer in a smooth U-duct with and without rotation. Paper presented at ASME TURBO EXPO 2002: Heat Transfer, Manufacturing Materials and Metallurgy, Amsterdam, Netherlands.10 p.
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abstract = "Computations were performed by using Version 5.5 of the Fluent-UNS code to compare two turbulence models in predicting the three-dimensional flow and heat transfer in a smooth duct of square cross section with a small radius of curvature 180-degree bend under rotating and non-rotating conditions (Re = 25,000; Ro = 0.0 and 0.24). The two turbulence models investigated are the standard k-ε model and a Reynolds stress model. For both models, the two-layer low-Reynolds model of Chen and Patel was used in the near-wall region. Results obtained show that though the k-ε model predicts turbulence quantities incorrectly, the predicted velocity and temperature fields and the surface heat transfer are similar to those from the Reynolds stress model when there is no rotation. When there is rotation, there is significant difference in the predicted surface heat transfer on the leading surface. But, the predicted flow field is still qualitatively similar.",
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Gu, X, Wu, H-W, Schock, HJ & Shih, TIP 2002, 'Two-equation versus Reynolds-stress modeling in predicting flow and heat transfer in a smooth U-duct with and without rotation', Paper presented at ASME TURBO EXPO 2002: Heat Transfer, Manufacturing Materials and Metallurgy, Amsterdam, Netherlands, 02-06-03 - 02-06-06 pp. 1115-1124. https://doi.org/10.1115/GT2002-30616

Two-equation versus Reynolds-stress modeling in predicting flow and heat transfer in a smooth U-duct with and without rotation. / Gu, X.; Wu, Horng-Wen; Schock, H. J.; Shih, T. I.P.

2002. 1115-1124 Paper presented at ASME TURBO EXPO 2002: Heat Transfer, Manufacturing Materials and Metallurgy, Amsterdam, Netherlands.

Research output: Contribution to conferencePaper

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AU - Gu, X.

AU - Wu, Horng-Wen

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AU - Shih, T. I.P.

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AB - Computations were performed by using Version 5.5 of the Fluent-UNS code to compare two turbulence models in predicting the three-dimensional flow and heat transfer in a smooth duct of square cross section with a small radius of curvature 180-degree bend under rotating and non-rotating conditions (Re = 25,000; Ro = 0.0 and 0.24). The two turbulence models investigated are the standard k-ε model and a Reynolds stress model. For both models, the two-layer low-Reynolds model of Chen and Patel was used in the near-wall region. Results obtained show that though the k-ε model predicts turbulence quantities incorrectly, the predicted velocity and temperature fields and the surface heat transfer are similar to those from the Reynolds stress model when there is no rotation. When there is rotation, there is significant difference in the predicted surface heat transfer on the leading surface. But, the predicted flow field is still qualitatively similar.

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Gu X, Wu H-W, Schock HJ, Shih TIP. Two-equation versus Reynolds-stress modeling in predicting flow and heat transfer in a smooth U-duct with and without rotation. 2002. Paper presented at ASME TURBO EXPO 2002: Heat Transfer, Manufacturing Materials and Metallurgy, Amsterdam, Netherlands. https://doi.org/10.1115/GT2002-30616