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- W2354754121 abstract "By using a low Reynolds number turbulent-flow numerical model,a numerical simulation was performed of the flow and heat transfer performance of air externally sweeping across 8 rows of corrugated and bare tube bundles.Through a comparison,analyzed and investigated was the intensified heat transfer mechanism of the corrugated tube bundles.It has been found that due to the presence of a raised corrugation on the tube bundles,secondary longitudinal vortex flows in the cross section of the flow field may result,enhancing the disturbance and turbulence energy of the fluid and hence playing a role of intensifying the heat transfer.Through a numerical calculation,the law governing the influence of the geometrical parameters of the corrugated tube bundles on the flow and heat transfer performance was analyzed.The calculation results show that there exists a critical Reynolds Number Recr=8000.When Re is lower than Recr,the heat transfer factor η will increase with an increase of the parameter ξ.When Re is greater than Recr,the heat transfer factor η will increase with a decrease of the parameter ξ.Within the range of Reynolds Number being studied,to appropriately decrease the value of the parameter ξ and increase the value of the parameter Ψ is favorable for improving the overall heat transfer performance of the corrugated tube bundles." @default.
- W2354754121 created "2016-06-24" @default.
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- W2354754121 date "2009-01-01" @default.
- W2354754121 modified "2023-09-23" @default.
- W2354754121 title "Numerical Calculation of Intensified Heat Transfer Law of Air Externally Sweeping Across Corrugated Tube Bundles" @default.
- W2354754121 hasPublicationYear "2009" @default.
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