Stainless steelFriction factorThe article presents the research results referring to the analysis of the influence of finish treatment (finishing turning, grinding, burnishing) on the friction factor of steel applied to marine pump shafts. The research was performed on a roller 39 mm in diameter ...
The following formula is proposed to provide a combined factor of safety for the latter situation: (4-1)FOScombined=(FOSlateralcosθ)2+(FOSaxialsinθ)2 where FOScombined: combined factor of safety (FOS); FOSlateral: lateral FOS; FOSaxial: axial FOS; θ: angle of mooring line from ...
The optimum geometries for the maximum friction-factor are found as a function of cell width to cell depth and clearance to cell width ratios. 展开 关键词: Pressure Flow (Dynamics) Friction Reynolds number Clearances (Engineering) Flat plates ...
将“friction factor"翻译成拉脱维亚文 berzes koeficients, hidrauliskais berzes koeficients是“friction factor"到 拉脱维亚文 的最佳翻译。 译文示例:The coefficient of friction used must take account of all influencing aspects, such as the brake force, the area of the friction material and ...
In this paper, the measurement of friction factor in gas with slip at the wall is presented; these are made to encompass the following aspects: change in pipe material, pipe wall roughness, and channel geometry, for various gases. Two different wall materials (stainless steel and copper), thr...
The friction factor f is the ratio of the shear stress τ on the bounding walls of the channel to the dynamic pressure of the coolant, i.e. (6.1)τ=f12ρu2 where ρ is the coolant density and u its velocity (the dynamic pressure 1/2ρu2 is the rise in pressure that ideally could...
The activation energy of the peak is0 .92 ev, and the frequency factor is 6.3×10~(15) S~(-1) . The present work showsthat there is identical relaxationp henomenoh and the same Snoek paekfor both the two kinds of martensite, the deep cooling induced martensiteand the stress induced ...
The convective heat transfer, friction factor, effectiveness and number of transfer units (NTU) of Fe3O4/water nanofluids flow in a double pipe U-bend heat exchanger and with twisted tape inserts were estimated experimentally. The experiments were conducted in the Reynolds number range from 16,00...
Polymers and polymer solutionsDrag reductionChannel flowPolymer-induced drag reduction is the phenomenon by which the friction factor of a turbulent flow is ... Gillissen,JJ J. - 《Physical Review E Statistical Nonlinear & Soft Matter Physics》 被引量: 22发表: 2008年 Drag Reduction Effect of Ro...
K. Lange, in Encyclopedia of Materials: Science and Technology, 2001 (a) Friction characteristics Friction conditions can be divided in general into four types, which may be defined by the parameters μ=Coulomb friction coefficient, m=friction factor, and k=shear flow stress: ...