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Article
Relationship between wall shear stresses and streamwise vortices
The relationship between wall shear stresses and near-wall streamwise vortices is investigated via a direct numerical simulation (DNS) of turbulent flows over a wavy boundary with traveling-wave motion. The re...
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Article
A New Scheme for the Simulation of Microscale Flow and Dispersion in Urban Areas by Coupling Large-Eddy Simulation with Mesoscale Models
A coupling scheme is proposed for the simulation of microscale flow and dispersion in which both the mesoscale field and small-scale turbulence are specified at the boundary of a microscale model. The small-sc...
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Article
Heteropoly Acid Supported on Cu-Doped Three-Dimensionally Ordered Macroporous SiO2 as Efficient Catalyst for the Selective Oxidation of Methacrolein
Cu-doped three-dimensionally ordered macroporous (3DOM) SiO2 was prepared by a colloidal templating method and used as the support of heteropoly acid for the selective oxidation of methacrolein (MAL) to methacryl...
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Article
Development of inflow turbulence in microscale urban atmospheric environment
The sensitivity of turbulence-development to inflow turbulent statistics is investigated in microscale urban atmospheric environment flows. Large-eddy simulations (LESs) are carried out, in which the inflow er...
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Article
Large eddy simulation of aircraft wake vortex with self-adaptive grid method
A self-adaptive-grid method is applied to numerical simulation of the evolution of aircraft wake vortex with the large eddy simulation (LES). The Idaho Falls (IDF) measurement of run 9 case is simulated numeri...
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Article
Open AccessSmart Liquid SERS Substrates based on Fe3O4/Au Nanoparticles with Reversibly Tunable Enhancement Factor for Practical Quantitative Detection
There is a strong correlation between the surface enhanced Raman scattering (SERS) enhancement factor (EF), the excitation wavelength and the feature properties (composition, size, geometry and analytes). The ...
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Article
Study on the dynamic characteristics of flow over building cluster at high Reynolds number by large eddy simulation
In this paper, the dynamic characteristics of building clusters are simulated by large eddy simulation at high Reynolds number for both homogeneous and heterogeneous building clusters. To save the computationa...
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Article
Open AccessThe Effect of Dielectric Constants on Noble Metal/Semiconductor SERS Enhancement: FDTD Simulation and Experiment Validation of Ag/Ge and Ag/Si Substrates
The finite-difference time-domain (FDTD) method was employed to simulate the electric field distribution for noble metal (Au or Ag)/semiconductor (Ge or Si) substrates. The simulation showed that noble metal/G...
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Article
A composite model for complex building street configuration in a large eddy simulation of local urban atmospheric environment
The wind field and pollutant dispersion are predicted numerically in a local urban area with crowded buildings and heavy traffic. A domain decomposition method is used in the large eddy simulation, in which th...
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Article
The effect of the Taylor-Görtler vortex on Reynolds stress transport in the rotating turbulent channel flow
We investigates the effect of Taylor-Görtler vortex on the Reynolds stress transport in the rotating turbulent channel flow by direct numerical simulation. The Taylor-Görtler vortex is detected by longitudinal...
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Article
Large eddy simulation of stably stratified turbulence
Stable stratification turbulence, as a common phenomenon in atmospheric and oceanic flows, is an important mechanism for numerical prediction of such flows. In this paper the large eddy simulation is utilized ...
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Article
Large eddy simulation of city micro-atmospheric environment
Air quality is one of the important conditions for a better residence life in the populated urban area and it is closed related to the micro-atmospheric environment. Atmospheric environment is controlled by ai...
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Article
Thin layer structure of dissipation rate of scalar turbulence
The structure of scalar turbulence dissipation is studied by means of direct numerical simulation. It has been discovered that the scalar turbulence dissipation exhibits thin layer structure. Based on the anal...
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Article
Effects of plane strain on inhomogeneous turbulence
The influence of the mean plane strain on the turbulence transportation is investigated by large eddy simulation (LES) in the shearless turbulence mixing layer. It is found that the mean strains enhance the tu...
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Article
Flow patterns and dissipation of turbulent kinetic energy in near-wall turbulence
It is disclosed the flow patterns of turbulent flows in near wall region by means of topological analysis. It has found that there exists a close relationship between the topological characteristics and the sp...
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Article
Visualization and analysis of longitudinal vortices at curved walls of 2D laminar and turbulent channel flows
The three-dimensional structure of longitudinal vortices at the curved walls of both laminar and turbulent channel flows is visualized by the hydrogen bubble technique. Together with the conditional sampling o...
