ESDU TM 213: ESDU TECHNICAL MEMORANDUM: Curve fits to the Spalding and Chi mean and local skin friction data

Abstract:

ESDU TM 213 presents background information and calculations which support the analysis for Appendix A of Data Item ESDU 68020 regarding the derivation of curve fits to mean and local skin friction data respectively, for flat plates (produced by Spalding and Chi).

Indexed under:

Skin Friction Drag

Details:

Data Item ESDU TM 213
Format:	PDF with software
Status:	Original, issued 01 Oct 2023 Published in Release 2024-01 (Jan 2024)
Previous Releases:	None available
ISBN:	978 1 86246 889 4

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This Data Item is complemented by the following software:

Toolbox Apps

Name

Details

CFM Toolbox Run

Title

Local and mean skin friction coefficients on a flat plate

Version

1.1

Details

This App uses the semi-empirical method of Spalding and Chi to obtain the local and mean skin friction coefficients for a turbulent boundary layer on a smooth flat plate with zero pressure gradient and zero heat transfer.

The data are applicable to flows with Reynolds numbers based on streamwise distance over the range 100 thousand to 1000 million and for Mach numbers up to 5.

The equations used are taken from Appendix A of ESDU 78019, which itself is based on the method described in ESDU 68020. Both of these Items are to be found in the Aerodynamics Series.

ESDU TM 213

ESDU TECHNICAL MEMORANDUMCurve fits to the Spalding and Chi mean and local skin friction data

ESDU TECHNICAL MEMORANDUM
Curve fits to the Spalding and Chi mean and local skin friction data