friction reduction
A CONCEPTUAL DESIGN OF WIND FRICTION REDUCTION ATTACHMENTS TO THE REAR PORTION OF A CAR FOR BETTER FUEL ECONOMY AT HIGH SPEEDS
... wind friction reduction attachments are opened and the vehicle is traveling on high ways, the driver has to be habituated while driving because the length of the vehicle increases so in overtaking and in ...
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Friction reduction mechanisms in boundary lubricated W-doped DLC coatings
... The friction and wear results have shown a great difference between steel/CI tribo- system and WDLC/CI tribo-system for Mo-containing ...with friction and wear knowledge of MoDTC can be studied by the ...
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Titanium oxide nano particles as anti wear and friction reduction additives in lubricating oil
... nanofluid) in mineral based multi-grade engine oil. Friction reduction and anti-wear properties were obtained using a pin-on-disc tribometer. Test were carried under loads of 40 N, 60 N & 90 N, sliding ...
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Friction Reduction in Powertrain Materials: Role of Tribolayers
... Mass reduction of automotive components has received significant attention in recent years due to its strong influence on improving fuel economy. In this context the use of linerless Al-Si alloys in some internal ...
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Low order modelling of flow control techniques for turbulent skin friction reduction
... Johansson et al. [44] proposed that, essentially, riblets reduce turbulent skin-friction drag by inhibiting spanwise movement of coherent flow structures. Park [45] performed experimental studies, in the wall ...
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Effectiveness of active flow control for turbulent skin friction drag reduction
... skin friction reduction is investigated for each detection plane ...drag reduction in opposition control is affected by the amplitude parameter (A) as well as the detection plane ...drag ...
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Article The Friction Properties of Firebrat Scales
... Abstract: Friction is an important subject for sustainability due to problems associated with energy ...reduce friction; however, suitable structures are still under ...the friction reduction ...
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Staggered Three-dimensional Cavities as a Possible Method for Skin Friction Drag Reduction
... skin friction reduction was observed, a secondary vortical flow was ...skin friction reduction had been achieved by manipulating the transverse velocity component either using riblets, ...
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The Influence of the Tool Surface Texture on Friction and the Surface Layers Properties of Formed Component
... reduce friction and tool wear and also has an impact on the surface layers properties of formed ...of friction for different texture parameters (individual feature shape, including the depth profile of the ...
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EXPERIMENT INVESTIGATION OF LASER SURFACE TEXTURING ON PISTON RINGS TO REDUCE FRICTION , WEAR, OIL CONSUMPTION, AND HARMFUL EMISSION
... the friction quantifications at 1200 rpm can be considered less reliable than at the 500–900 rpm ...little friction reduction at low speeds below 2000 ...
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The Reduction of Friction Losses in District-Heating Pipelines
... of friction reduction with surfactants in aqueous solutions is based on the decrease of the turbulence intensity and can be ex- plained with the formation and the shape of ...the friction-reducing ...
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Skin friction drag reduction over staggered three dimensional cavities
... skin friction measured for the baseline smooth surface agrees well with the universal log-law, the skin friction results obtained from DNS and semi- empirical results, all shown in ...skin friction ...
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A new internal combustion engine configuration: opposed pistons with crank offset
... for friction losses because it was anticipated that the reaction loads would result in large piston friction ...in friction loss between the motored engine and the engine with ignition and burn might ...
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Development of a model to demonstrate the effects of friction and pressure on skin in relation to pressure ulcer formation
... with friction forces than without friction ...words, friction as well as pressure causes reduction in cross-sectional area of blood ...of friction to blood vessels was increasing the ...
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REVIEW OF TRIBOLOGY PARAMETERS IN INTERNAL COMBUSTION ENGINE
... Frictional losses arising from the rotating engine bearings (notably the crankshaft and camshaft journal bearings) are the next most significant, followed by the valve train (principally at the cam and follower ...
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Introduction of Multiscaled Longitudinal Vortices by Fractal Patterned Surface Roughness
... Surface patterns based on fractal patterns may suppress separation and reduce skin friction drag. This relates the change in a local velocity profile due to the longitudinal vortices generated by fractal surface ...
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Reduction of friction and wear by grooves applied on the nanoscale polished surface in boundary lubrication conditions
... of friction force and as a consequence will also reduce contribution of adhesive interaction of ...so reduction of vacuum in the exit region becomes ...
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Skin friction at the interface between hands and sports equipment
... Then friction testing was carried out in a range of conditions, this time including the wear of a glove which is permitted as long as the index and middle fingers are not covered at the end (as shown in Figure ...
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Prediction of Extrusion Pressure in Vortex Extrusion Using a Streamline Approach
... Figure 5 presents the components of total power consumptions (Eq. (15)) vs. twist angle and RL for RA = 0.6. In the constant RA, increasing in the RL will decrease the inclination of material path and so decrease the ...
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Development of Numerical Model for Transients in pipe flow for Water Hammer Situation and Comparison of Different Friction Equations for Transient Friction
... [11] Chudhury M. H.,and Hussaini M. Y. 1985. Second-order accurate explicit finite–difference schemes for water hammer analysis. Journal of fluid Eng. Vol. 107. pp. 523-529. [12] Zhao M.. and Ghidaoui M. S. 2003. ...
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