Turbulent channel sim ulations and results
Hairpin vortices in turbulent channel flow
... where the y are the stretched points, str j y j indicates the uniform distribution, and P , Q are two parameters that characterize the distribution ( P 1. 9 , Q 1. 9 ). The partial derivatives along y are calculated ...
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Particulate dispersion in a turbulent serpentine channel
... Figure 2.11 presents the analytical solutions of St b = 1.0, 2.0, 3.0 and 4.0 and the cor- responding trajectories from numerical simulations. The numerical results and the analytical solutions are nearly ...
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Turbulent Structure in Open Channel Flow
... OF RESULTS In accordance with the objectives of this study, the effect of pressure gradient and surface roughness effects on the turbulence characteristics of the open channel flow boundary layer are ...
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Temporal acceleration of a turbulent channel flow
... initially turbulent state following the opening of a valve, together with large eddy simulations of the experiments and extended Stokes first problem solutions for the early stages of the ...The results ...
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Temporal acceleration of a turbulent channel flow
... initially turbulent state following the opening of a valve, together with large eddy simulations of the experiments and extended Stokes first problem solutions for the early stages of the ...The results ...
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Particle-Interaction Effects in Turbulent Channel Flow
... The results clearly show that from t = ...for turbulent channel flows particle positions close to a wall correlate with instantaneous regions of low velocity along the streamwise direction, avoiding ...
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Turbulent velocity measurements in open channel bores
... open channel. The experimental results demonstrated that the propagation of a breaking bore induced some substantial turbulent ...ensemble-averaged turbulent velocity data highlighted some ...
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DNS of a hot-wire anemometer in a turbulent channel flow
... numerical sim- ulation data has to be modified to fit anemometer mea- ...a channel flow, it will provide an a pri- ori approximation of the flow field without any addi- tional modeling other than numerics, ...
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Microbubble coalescence and breakup in turbulent vertical channel flows
... performed. Results showed that breakup took place in the regions where the turbulence kinetic energy dissipation rates were high enough to deform the 220 µm bubbles injected into the high Reynolds number ...flow. ...
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Preferential Concentration of Inertial Fibres in a Turbulent Channel Flow
... latter results in the present case is most likely due to the fact that the LES results in the near-wall region are still developing, whilst the benchmark DNS results [3] were computed when the ...
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Solid Particles Injection in Gas Turbulent Channel Flow
... the results were observed at a section that is far from the pipe entrance by ...The results show the difference between parti- cles velocities across the pipe cross ...
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Numerical investigation of particles turbulent dispersion in channel flow
... the results of particle distribution obtained by ...the turbulent dispersion of particles as a succes- sion of interactions between fluid eddies and particles, in which the interaction time t int and ...
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Compressible turbulent channel flow with impedance boundary conditions
... present results are purely numerical, experimental proof of concept of the pro- posed flow control strategy has already been successful obtained in the context of laminar flow separation control over an airfoil by ...
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Passivity-Based Output-Feedback Control of Turbulent Channel Flow
... new results presented in this paper demonstrate that when sensing and actuation is located at the walls, LTI con- trol is only capable of restricting the energy produced by each spatial ...
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Nonlinear optimal large-scale structures in turbulent channel flow
... a turbulent channel ...the turbulent mean flow. The results of this nonlinear optimization allow us to show the presence of an optimally growing oscillating streaky motion at the outer scale ...
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Reynolds number effects on particle agglomeration in turbulent channel flow
... al. channel walls, as previously noted, where particle fluctuating velocities are higher than at other ...These results clearly illustrate the dramatic increase in fluctuating velocities with Reynolds ...
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Development of Boundary Conditions for Turbulent Flow in a Channel with Nucleating Bubbles.
... calculated to be within 43.3%. The large error comes from the experimental uncertainty and is considered to be typical of experiments concerning heat and mass transfer. This particular result will help in estimating wall ...
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Active and passive in-plane wall fluctuations in turbulent channel flows
... pulsatile channel flow and direct numerical simulations indicated that positive streamwise wall fluctuations can lead to ...Our results show that the superior performance of active spanwise control cannot ...
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Direct numerical simulation of sediment entrainment in turbulent channel flow
... open channel is numerically ...between turbulent coherent structures and particle ...numerical sim- ulation of turbulent flow, the combined finite-discrete element modeling of particle motion ...
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Numerical Simulation of Turbulent Channel Flow at Low Prandtl Number
... 4 Results and Discussion The turbulent forced convection flow through a channel is numerically studied and the heat transfer characteristics are reported for low Prandtl number ...vertical ...
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