搜索结果: 1-15 共查到“知识库 湍流理论”相关记录183条 . 查询时间(2.417 秒)
中国科学院力学研究所在槽道湍流壁面压力脉动研究中取得进展（图）
槽道 湍流壁面 压力脉动
2023/1/7
近期， J. Fluid Mech.刊登了中科院力学所杨子轩研究团队在槽道湍流壁面压力方面的研究进展，论文题目为《槽道湍流中壁面压力的时空能谱》（On the wavenumber-frequency spectrum of the wall pressure fluctuations in turbulent channel flow）。
Turbulent Vortieity Transport in Three Dimensions
Turbulent Vortieity Transport Three Dimensions
2016/5/18
The nature of vorticity transport in three-dimensional turbulent flow is investigated using data from a direct numerical simulation of channel flow. An extension of Taylor's (1932) vorticity transport...
On the physical accuracy of scalar transport modeling in inhomogeneous turbulence
physical accuracy scalar transport modeling inhomogeneous turbulence
2016/5/18
Direct numerical simulations of scalar fields produced by uniform and line sources in channel flow are used as the basis for examining the accuracy of random flight and closure models in predicting tu...
A grid-free dilatation element method for quasi-one-dimensional gas dynamics
Compressible flow Gridfree Quasi-one-dimensional flow
2016/5/18
A grid-free scheme for solving quasi-one-dimensional, isentropic, compressible flow in the subsonic regime is developed with a view toward its eventual generalization to three-dimensional turbulent co...
Vortex Method Simulation of Ground Vehicle Aerodynamics
Vortex Method Simulation Ground Vehicle Aerodynamics
2016/5/18
Recent results are presented from the application of a grid-free vortex method to the prediction of turbulent aerodynamic flows produced by road vehicles. The approach has the character of a large edd...
Turbulent flow properties of large-scale vortex systems
gridfree turbulence vortex methods
2016/5/18
Large-scale computations of dynamically interacting vortex tubes forming filaments are performed with a view toward investigating their relationship to turbulent fluid flow. It is shown that the stati...
Grid-Free Simulation of the Spatially Growing Turbulent Mixing Layer
Grid-Free Simulation Spatially Growing Turbulent Mixing Layer
2016/5/18
The spatially developing, unforced, turbulent mixing layer is simulated via a grid-free vortex method. Vortex filaments composed of straight tubes are used as the computational element with new vortex...
Vortex filament simulation of the turbulent coflowing jet
Vortex filament simulation turbulent coflowing jet
2016/5/18
A high resolution grid-free vortex filament scheme is applied to the prediction and simulation of coflowing round jets with a view to acquiring a new perspective on their physics and establishing the ...
Vortex Filament Simulation of the Turbulent Boundary Layer
Vortex Filament Simulation Turbulent Boundary Layer
2016/5/18
A hybrid vortex fi lament scheme with the capability of simulating bounded turbulent fl ows is described. Viscous generation of new vortex elements at solid surfaces is accomplished through the interm...
It has long been customary to assume that vortical structures in turbulent flows are synonymous with regions of rotational motion. Mathematical implementations of this idea using numerical and experim...
Vortex Dynamics in Transitional and Turbulent Boundary Layers
Vortex Dynamics Transitional Turbulent Boundary Layers
2016/5/18
The dynamics of transitional and turbulent boundary layers is explored via a hybrid vortex filament/finite volume simulation scheme in which vortical structures are identified without the constraints ...
Sensitivity analysis of three-dimensional salinity simulations in North San Francisco Bay using the unstructured-grid SUNTANS model
Unstructured grid Numerical diffusion Scalar advection scheme Turbulence model Grid resolution
2015/6/30
The unstructured-grid SUNTANS model is applied to San Francisco Bay using a grid with an average resolution of 50 m. This accurately resolves tidal hydrodynamics in a domain that extends from the Paci...
Improved parameterization of seagrass blade dynamics and wave attenuation based on numerical and laboratory experiments
seagrass blade dynamics wave attenuation based numerical laboratory experiments
2015/6/30
Seagrass blade dynamics were explored through numerical and laboratory experiments in order to improve parameterization of wave attenuation by submerged aquatic vegetation in the presence of a backgro...
分层湍流实验平台及在创新教学实践中的应用
分层湍流 实验平台 流动显示 实验教学
2015/3/2
介绍了上海大学上海市应用数学和力学研究所湍流与环境流体力学实验室分层湍流实验平台的建设，以及基于此科研平台进行的LIF（laser-induced fluorescence）流动显示、PIV（particle image velocimetry）流场测量和PDA（particle dynamic analyzer）单点测量等教学实验结果，最后对此平台在研究生创新实践教学过程中的应用过程进行了介绍。...