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Heat transfer and pressure drop at single rods with three-dimensional roughnesses: large scale tests
The results from heat transfer and pressure drop measurements at five single rods with two types of three-dimensional roughnesses in four outer tubes are reported. The friction factors and stanton numbers were transformed to the boundary conditions of the rough wall by different methods. A new simple method to transform the stanton number is proposed. stanton numbers measured in different outer tubes, transformed to a common flow cross section are a function of the wall Reynolds number only.doi:10.5445/ir/270015765 fatcat:vhucknwkdbaolm3vgiez2ptf6i