Laser measurement in materials processing. Transport phenomena within boundary layer.

Transport phenomena in ultrafiltration: membrane selectivity and boundary layer phenomena

Retention characteristics of UF membranes are de— lineated through comparison of the combined viscous flow and frictional model with the Ferry—Faxen equation. The molecular weight cut—off concept is discussed using calculations of how sharp cut-off curves one can expect of UF membranes with uniform pore sizes and how heteroporosity will affect such curves. Experimental retention—flux curves for...

Study on Wicking Measurement in Thin Layer Textiles by Processing Digital Images

The purpose of this work is to assess and develop experimental techniques that allowwicking measurement over a wide range of textiles. Various kinds of fabrics, nonwoven layers and anelectro spinning nylon layer were used as the test materials. A syringe is used to drop a 0.02 g spot ofdistilled water on the sample and a digital camera to take pictures simultaneously. When the wickingprocess st...

Numerical Simulation of Transport Phenomena in Nuclear Cores

Recent Development in Laser Materials Processing

Recent research and development in laser machining and laser forming processes is reviewed. In the laser machining area, striation formation and prediction, and gas jet workpiece interactions are discussed. In the laser forming area, strain rate effects, and convex forming are presented.

Superparameterization of Oceanic Boundary Layer Transport

One of the most difficult processes which limit our ability to generate realistic, high-resolution simulations of the ocean state is intermittent nature of oceanic turbulence related to the presence of coherent structures at wide range of scales when simple parameterizations based on eddy diffusion concepts do not necessarily provide the correct answer. The coherent vortices have life-times in ...