Numerical Studies on the Effect of Different Obstruction Geometries on Performance of Rectangular Channel Air Heaters [PDF]
Journal of Heat and Mass Transfer ResearchAir heaters have poor thermal efficiency. Flow obstructions improve the efficiency of the air heater by enhancing heat transfer and disrupting the formation of the laminar sub-layer.
Bronin Cyriac, Siddappa Bhusnoor
doaj +1 more source
An experimental investigation of structured roughness on heat transfer during single-phase liquid flow at microscale [PDF]
, 2011 This paper was presented at the 3rd Micro and Nano Flows Conference (MNF2011), which was held at the Makedonia Palace Hotel, Thessaloniki in Greece.
Lin, TY +2 more
core +6 more sources
Walailak Journal of Science and Technology, 2014 Artificial roughness has been found to enhance the rate of heat transfer in solar air heater ducts. However, improvement in heat transfer enhancement is invariably accompanied by increased pumping power. Several investigators have investigated the effect
Maneesh KAUSHAL, Varun GOEL
doaj +1 more source
Improvement of Surface Roughness in Single Point Incremental Forming Process by the Implementation of Controlled Vibration [PDF]
Engineering and Technology Journal, 2022 Vibration implementation that assists metal forming has many advantages, such as enhancement of surface equality, reducing the forming force and decreasing the stresses.
Reham Nema +2 more
doaj +1 more source
Decomposing Dual Scale Soil Surface Roughness for Microwave Remote Sensing Applications [PDF]
, 2012 Soil surface roughness, as investigated in this study, is decomposed in a dual scale process. Therefore, we investigated photogrammetrically acquired roughness information over different agricultural fields in the size of 6-22 m(2) and decomposed them ...
Seidel, Moritz +5 more
core +1 more source
Journal of Techniques, 2022 Background: Chitosan is a natural bio-polymer, which has been utilized in different pharmaceutical and biomedical fields, and it has antimicrobial activities.
Huda Abdul-Wahab Abdul-Shafi +1 more
doaj +1 more source
Grinding surface roughness measurement based on the co-occurrence matrix of speckle pattern texture [PDF]
, 2006 Surface speckle pattern intensity distribution resulting from laser light scattering from a rough surface contains various information about the surface geometrical and physical properties.A surface roughness measurement technique based on the texture ...
Gledhill, Duke +4 more
core +1 more source
Numerical investigation to augmentation of heat transfer in solar air heater with arc shape ribs on
Journal of Thermal EngineeringUsing numerical methods, this paper investigates the heat transmission and friction factor of a SAH duct that has been intentionally roughened. The absorber plate of the duct is equipped with an arc-shaped structure that has three distinct angles of ...
Gaith Monem FADALA +2 more
doaj +1 more source
Analysis of surface roughness in relation to soil loss and runoff at high rainfall intensities. [PDF]
, 2002 The decay of roughness is an important factor governing surface processes such as infiltration and soil erosion. Thus the decay of surface roughness under different surface conditions was investigated and related to quantitative amounts of soil loss ...
Idowu, O. J. +2 more
core +1 more source
Statistical properties of fresh snow roughness
, 2008 We present results from a series of experiments in which fresh snow roughness was measured by means of digital photography and analyzed using the random field approach.
C. Manes +19 more
core +1 more source