Due to the increasing energy cost, efficiency of industrial dryer as energy-intensive processes should be improved. The designer optimize design parameters drying equipment achieve minimum consumption. SST k-ω turbulence model is used simulate a real geometry for applications. For optimization impinging round jet, specific consumption set objective function minimized. jet surface distance, spac...

Let ω(h, k) be a modulus of continuity, that is, ω(h, k) is a continuous function on the square [0, 2π] × [0, 2π], nondecreasing in each variable, and possessing the following properties: ω(0, 0) = 0, ω(t1 + t2, t3) ≤ ω(t1, t3) + ω(t2, t3), ω(t1, t2 + t3) ≤ ω(t1, t2) + ω(t1, t3). Yu ([3]) introduced the following classes of functions: HH := {f(x, y) : ‖f(x, y)− f(x+ h, y)− f(x, y + k) + f(x+ h,...

[1] Phytoplankton alter the absorption of solar radiation, affecting upper ocean temperature and circulation. These changes, in turn, influence the atmosphere through modification of the sea surface temperature (SST). To investigate the effects of the present-day phytoplankton concentration on the atmosphere, an atmospheric general circulation model was forced by SST changes due to phytoplankto...

This paper presents an analysis of linear viscous stress Favre averaged turbulence models for computational fluid dynamics (CFD) fully turbulent round jets with a long straight tube geometry in the near field. Although similar work has been performed past very relevant solutions, considerations were not given issues and limitations involved coupling between Eulerian Lagrangian phase, such as tw...

Abstract Transient flow characteristics and dissipation mechanism in pressurized pipeline were investigated based on 1D friction models 3D turbulence models, where the pressure–density model was combined into continuity equation allowing for elasticity of fluid pipes. The applicability realizable k–ε SST (shear stress transport) k–ω verified with comparison to traditional water hammer experimen...

Studying the axial matching between inducer and impeller is crucial for optimizing structure of centrifugal pumps. In this paper, SST k-ω turbulence model used to analyze influence three positions on internal flow energy loss a pump. Additionally, entropy generation method evaluate in Three sets design schemes are selected based ratio distance from trailing edge inlet diameter, which λ = 0.6, 0...

We present [K/Fe] abundance ratios for a sample of 450 stars in Omega Centauri, using high resolution spectra acquired with the multi-object spectrograph FLAMES@VLT. Abundances Fe, Na and Mg were also derived. detected intrinsic K variations analysed stars. Moreover, shows significant correlation [Na/Fe] anti-correlation [Mg/Fe]. The presence clear-cut Mg-K makes Centauri third stellar system, ...

The features of the fatty acid composition oils and mayonnaise samples prepared on basis sunflower, linseed hemp were determined by method gas-liquid chromatography. ratio between content PUFAs ω-9/ω-6/ω-3 families in investigated sunflower oil was established, which 177 : 553 1. This is caused high linoleic oleic acids low α-linolenic (ω-3 ) oil. In studied oil, 52 %, (ω-9) (ω-6) 22.3 16.2 res...

Thermal design and the choice of turbulence models are crucial for motors. In this project, geometrical model vertical shielding induction motor a small nuclear main pump was established by SolidWorks software finite volume method adopted to investigate temperature motor, especially temperatures bearings lubricated water. To make numerical simulation flow heat transfer in rotating clearance mor...

In order to study the influence of change guide vane airfoil on flow characteristics in draft tube a reversible hydraulic turbine, turbine was used as object study, and effect pattern, energy loss, pressure pulsation area studied based SST k-ω turbulence model. The results show that under low conditions, modified movable directly affects direction speed water entering tube, reduces density vort...