Determination of friction factors and heat transfer coefficients for flow past artifically roughened surfaces Page: 3 of 225

Ill
CONTENTS
Page
LIST OF FIGURES ................................................. v
LIST OF TABLES .................................................. viil
ABSTRACT ........................................................ ix
I. INTRODUCTION ............................................. 1
II. REVIEW OF BASIC RELATIONSLIPS FOR TURBULENT FLOW ......... 4
2.1 Reynolds Stresses and Eddy Viscosity ................ 4
2.2 Friction Factor, Friction Velocity, and Dimension-
less Velocity ...... 10
2.3 Universal Laws of Flow Distribution and Friction in
Turbulent Flow .................... 11
III. LOCATION OF THE SURFACE OF ZERO NET MOMENTUM TRANSFER .... 26
IV. DETERMINATION OF THE EFFECT OF SURFACE ROUGHNESS ON
FRICTIONAL PRESSURE LOSS ............................ 31
4.1 Empirical Methods for Determination of the Friction
Factor for the Inner Zone ....... 37
4.2 Theoretical Methods for Determination of the Friction
Factor for the Inner Zone ........................... 50
4.3 Classification of Results — The Parameter R(h^) ..... 62
4.4 The Effect of Variable Fluid Properties on t'ne
Parameter R(h+) 82
V. DETERMINATION OF THE EFFECT OF SURFACE ROUGHNESS ON
CONVECTIVE HEAT TRANSFER ................................. 85
5.1 Empirical Methods for Determination of the Stanton
Number Applicable to the Roughened Surface .......... 90
5.2 Derivation of the Universal Logarithmic Dimensionless
Temperature Distribution Laws for Smooth and Rough
Surfaces ............. 92
5.3 Theoretical Method for Determination of the Stanton
Number Applicable to a Smooth Tube .................. 97
5.4 Determination of the Turbulent Prandtl Number ....... 106
5.5 The Effect of Surface Roughness on the Stanton
Number .................. Ill

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Hodge, S.A.; Sanders, J.P. & Klein, D.E. Determination of friction factors and heat transfer coefficients for flow past artifically roughened surfaces, report, November 1, 1979; Tennessee. (https://digital.library.unt.edu/ark:/67531/metadc1092930/m1/3/ocr/: accessed April 22, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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