Aerodynamicallydriven condensate layer thickness distributions on isothermal cylindrical surfaces
Abstract
A simple yet rather general mathematical model is presented for predicting the distribution of condensate layer thickness when aerodynamic shear is the dominant mechanism of liquid flow along the surface. The Newtonian condensate film is treated using wellknown thinlayer (lubrication theory) approximations, and condensate supply is taken to be the result of either convective diffusion or inertial impaction. Illustrative calculations for a circular cylinder in a crossflow at Re = 100,000 reveal the consequences of alternate condensate arrival mechanisms and the existence of thicker reverseflow films behind the position of gas boundarylayer separation. The present formulation is readily generalized to include transient liquid layer flows on noncircular objects of variable surface temperature, as encountered in turbineblade materials testing or operation.
 Publication:

Chemical Engineering Communications
 Pub Date:
 1983
 Bibcode:
 1983ChEnC..24..275R
 Keywords:

 Aerodynamics;
 Circular Cylinders;
 Condensates;
 Flow Distribution;
 Isothermal Processes;
 Surface Layers;
 Liquid Flow;
 Transition Flow;
 Turbine Blades;
 Fluid Mechanics and Heat Transfer