Feasibility Study of Rans in Predicting Propeller Cavitation in Behind-Hull Conditions
Polish Maritime Research, 2020 The propeller cavitation not only affects the propulsive efficiency of a ship but also can cause vibration and noise. Accurate predictions of propeller cavitation are crucial at the design stage.
Zhang Yuxin +4 more
doaj +1 more source
An analytical model for turbulence scattered rays in the shadow zone for outdoor sound propagation calculation [PDF]
, 2009 In outdoor sound propagation, an inherent problem of the ray tracing method is its inability to determine the sound pressure level in the shadow zone, where geometrical rays do not penetrate.
Lam, YW
core +1 more source
Investigation of Hydraulic Jump Turbulence Parameters in Divergent Rectangular Sections using Fluent Model [PDF]
علوم و مهندسی آبیاری, 2018 A Stilling basin with divergent section has better performance and lower constructional costs than the classic basin. It can easily adapt itself to the upstream and downstream conditions in terms of depths and cross sections (Omid et al., 2007).
Mohammad Reza Nikpour
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
Evaluation and application of the Baldwin-Lomax turbulence model in two-dimensional, unsteady, compressible boundary layers with and without separation in engine inlets [PDF]
There is a practical need to model high speed flows that exist in jet engine inlets. The boundary layers that form in these inlets may be turbulent or laminar and either separated or attached.
Granville P.S. +5 more
core +2 more sources
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
doaj +1 more source
Generative modeling of turbulence
Physics of Fluids, 2022 We present a mathematically well-founded approach for the synthetic modeling of turbulent flows using generative adversarial networks (GAN). Based on the analysis of chaotic, deterministic systems in terms of ergodicity, we outline a mathematical proof that GAN can actually learn to sample state snapshots from the invariant measure of the chaotic ...
C. Drygala +3 more
openaire +2 more sources
Weak and strong regimes of incompressible magnetohydrodynamic turbulence
, 2009 It is shown that in the framework of the weak turbulence theory, the autocorrelation and cascade timescales are always of the same order of magnitude. This means that, contrary to the general belief, any model of turbulence which implies a large number ...
G. Gogoberidze +3 more
core +1 more source
Implementation of Dryden Continuous Turbulence Model into Simulink for LSA-02 Flight Test Simulation
, 2018 Turbulence is a movement of air on small scale in the atmosphere that caused by instabilities of pressure and temperature distribution. Turbulence model is integrated into flight mechanical model as an atmospheric disturbance.
Teuku Mohd Ichwanul Hakim, O. Arifianto
semanticscholar +1 more source
Turbulence Modeling in the Age of Data [PDF]
Annual Review of Fluid Mechanics, 2018 Data from experiments and direct simulations of turbulence have historically been used to calibrate simple engineering models such as those based on the Reynolds-averaged Navier–Stokes (RANS) equations.
K. Duraisamy, G. Iaccarino, Heng Xiao
semanticscholar +1 more source