Roughness, surface, effect

Simon, H. and Bulskamper, A., On the Evaluation of Reynolds Numbei and Relative Surface Roughness Effects on Centrifugal Compressor Per formance Based on Systematic Experimental Investigation, ASME 8J-C,1 118, New York American Society of Mechanical Engineers, 1983. 

Surface roughness effects in inorganic primer films... 

Medwell, J. O. and A. A. Nicol, Surface Roughness Effects on Condensate Films, ASME-AlChE Heat Trans. Conference and Exhibit, Los Angeles, California, Aug. (1965), Paper No. 65-HT-43. 

Tzeng, S. T. and Saibel, E., "Surface Roughness Effect on Slider Bearing Lubrication, ASLE Trans., Vol. 10, 1967, p. 334. 

Figure 2.3 Model geometry used for the study of surface-roughness effects on rarefied gas flows in micro channels.

Both of these methods may be applied to nonplanar electrodes if the results are obtained at electrolysis times sufficiently short that the diffusion layer remains thin in comparison to the radius of curvature of the nonplanar electrode surface. For example, the spherical hanging-mercurcy-drop electrode provides chronoamperometric data that deviate less than 1-2% from the linear-diffusion Cottrell equation out to times of about 1 s. With solid wire electrodes of cylindrical geometry, similar conclusions apply, but at short times surface roughness effects yields a real surface area that is larger than the geometric area. 

Farm and Avnir [113] were the first to use fractal geometry to determine effects of surface morphology on drug dissolution. This was accomplished by the use of the concept of fractal reaction dimension dr [114], which is basically the effective fractal dimension of the solid particle toward a reaction (dissolution in this case). Thus, (5.7) and (5.8) were modified [113] to include surface roughness effects on the dissolution rate of drugs for the entire time course of dissolution... 

Hering, R. G., and T. F. Smith Surface Roughness Effects on Radiant Transfer between Surfaces, Int. J. Heat Mass Transfer, vol. 13, p. 725, 1970. 

The average layer thickness of the first coating (layer 2) on the tube structures shown in Fig. 6.6 must be at least 30 to 40 gm to cover the substrate completely, i.e. to ensure the absence of substrate surface roughness effects on the defect... 

One way to represent surface roughness effects on lubrication, particularly fatigue life failure, is to use the lambda (A) factor correlation [a].2... 

Mixed EHD film lubrication is encountered during the transition from full EHD film to boundary lubrication. In this region, surface roughness (texture) effects are particularly critical. A common method of accounting for surface roughness effects is through the use of the film parameter (A) ... 

J. Koo and C. Kleinstreuer, Analysis of surface roughness effects on heat transfer in micro-conduits, International Journal of Heat and Mass Transfer 48, 2625-2634 (2005). 

Surface Roughness Effect on the Diffuse-Layer Capacitance... 

Handbook). Nevertheless, a number of phenomena unique to micro-conduits still prevail, causing pressure drops, flow rates, and/or friction factors to differ from results obtained for macrochannels [2]. Examples include dominant entrance effects because the conduits are very short, significant surface roughness effects due to the closeness of the channel walls, earlier onset of turbulence because of induced instabilities, measurable viscous dissipation effects resulting from steep velocity gradients, possible fluid-slip on channel walls depending upon the physical-chemical characteristics of the (coated) surfaces, and significant effects of low-level forces usually not relevant in macro-devices, such as surface tension and electrostatics. 

Kandlikar SG, Schmitt D, Carrano AL, Taylor JB (2005) Qiaracterization of surface roughness effects on pressure drop in single-phase flow in minicharmels. Phys Fluids 17(10) 100606... 

Zhang WM, Meng G, Peng ZK (2010) Random surface roughness effect on slider microbearing lubrication. Micro Nano Lett 5 347-350... 

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