Results 31 to 40 of about 37,005 (263)
Investigation of Discharge Coefficient of Triangular Duckbill Labyrinth Weirs Using Fluent Software and Gray Wolf and Elections Algorithms [PDF]
پژوهشهای زیرساختهای عمرانی, 2021 Labyrinth weirs are important hydraulic structures for water level regulation and flow control in canals, rivers, and reservoirs. Due to the uneven distribution of hydraulic head on the weir crest, the discharge coefficient changes along the labyrinth ...
Somayeh Emami +3 more
doaj +1 more source
Aviation, 2016 The air separators are used to provide safe, clean and appropriate air to the helicopter’s engine. In this operational study, the separation process inside a Ranque-Hilsch air separator cleaning system has been investigated to analyze the impact of ...
Seyed Ehsan Rafiee +1 more
doaj +1 more source
Nested polyhedra model of turbulence [PDF]
Physical Review E, 2017 A discretization of the wave-number space is proposed, using nested polyhedra, in the form of alternating dodecahedra and icosahedra that are self-similarly scaled. This particular choice allows the possibility of forming triangles using only discretized wave-vectors when the scaling between two consecutive dodecahedra is equal to the golden ratio, and
openaire +4 more sources
The Application of Rotor Control Equivalent Turbulence Input (RCETI) Models to Multi-Rotor Vehicles
AerospaceThis research paper investigates the applicability and scalability of the Rotor Control Equivalent Turbulence Input models for multi-rotor vehicles. Initially, a Rotor Control Equivalent Turbulence Input model is developed for an isolated rotor using ...
Mahmoud A. Hayajnh, J. V. R. Prasad
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Assessment of Two Streamline Curvature Correction Methods for an Elliptic Blending Turbulence Model
Applied Sciences, 2022 Using two different methods, a previously developed elliptic blending model (the original STT k-ω-φ-α model) is modified for sensitization to streamline curvature.
Xianglong Yang, Zhenhao Liao, Lei Yang
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High Health Care Utilization Preceding Diagnosis With Juvenile Idiopathic Arthritis
Arthritis Care &Research, EarlyView.Objective Although early diagnosis improves long‐term outcomes, patients with juvenile idiopathic arthritis (JIA) often experience prolonged, circuitous paths to diagnosis. To inform diagnostic improvement, we sought to characterize health care utilization in the year preceding diagnosis. Methods We identified 10,021 patients with an incident diagnosis
Anna Costello +5 more
wiley +1 more source
The three types of turbulence models and stability numerical simulation studies for cylindrical flow
Shuili Shuiyun Gongcheng XuebaoThe characteristics of flow around pile columns beneath harbor pile-wharf docks significantly influence port hydrodynamics and sediment transport. To explore the impact of turbulent numerical simulation methods on the precision of three-dimensional pile ...
XIA Xi, YOU Zaijin, WANG Zhaowei
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Advanced Engineering Materials, EarlyView.Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios +5 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares +3 more
wiley +1 more source
The ultimate state of convection: a unifying picture of very high Rayleigh numbers experiments
New Journal of Physics, 2020 The long-standing puzzle of diverging heat transport measurements at very high Rayleigh numbers (Ra) is addressed by a simple model based on well-known properties of classical boundary layers.
Philippe-E Roche
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