Argentum Solutions, Inc.

    Sterling guidance on corrosion and materials degradation
 

Potential-pH Diagrams
THERMEXPERT - Potential-pH diagram generator

Intelligent Tools

POLEXPERT - Polarization Scan Artificial Neural Network Expert System

SEQEXPERT - Sequential Immersion Test Artificial Neural Network Expert System

CYLEXPERT - Rotating Cylinder Electrode Intelligent Rotation Rate Calculator

Corrosion Calculator

Corrosion Rate Calculator

Corrosion Economics Estimator

FINCALCULATOR - Corrosion Economic Calculator





TUTORIAL ON CYLEXPERTTM AND THE ROTATING CYLINDER ELECTRODE

David C. Silverman


Table of Contents

Introduction-What is CYLEXPERT?
Overview of the Experimental Technique
Using CYLEXPERT-a step-by-step procedure
Hydrodynamics of a Smooth Cylinder
  1. Boundary Layer
  2. Mass Transfer Correlations
  3. Assessing Mass Transfer Control 		         Relating Velocities Among Geometries
Effect of Surface Roughness
Wall Shear Stress vs. Mass Transfer
CYLEXPERT (The Intelligent Experimental Design Tool)
List of Symbols

List of Symbols

d = diameter (cm)
D = diffusion coefficient in solution (cm2-s-1)
f = friction factor (dimensionless)
k = mass transfer coefficient (cm-s-1)
u = fluid velocity (cm-s-1)
ε = height of surface roughness irregularities (cm)
μ = absolute viscosity (g-cm-1-s-1)
υ = kinematic viscosity (=μ/ρ) (cm2-s-1)
ρ = density (g-cm-3)
τ = fluid shear stress at surface or wall (dyne/cm2)
ω = rotation rate (radians-s-1)
Reynolds number (Re)
                         
Schmidt number (Sc)
                         
Sherwood number (Sh)
                         






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David C. Silverman, Ph.D. - Primary Consultant
E-Mail:     dcsilverman@argentumsolutions.com
Phone:     314-576-3586
Fax:         314-754-9825
Address:   The Argentum House
                14314 Strawbridge Ct.
                Chesterfield, MO 63017