Direct numerical simulation - Wikipedia
A direct numerical simulation (DNS) is a simulation in computational fluid dynamics (CFD) in which the Navier–Stokes equations are numerically solved without any turbulence model. This means that the whole range of spatial and temporal scales of the turbulence must be resolved. All the spatial scales of the turbulence must be resolved in the computational mesh, from the smallest dissipative scales (Kolmogorov microscales), up to the integral scale , associated with the motion…
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Computational fluid dynamics - Wikipedia
In all of these approaches the same basic procedure is followed.
• During preprocessing
• The simulation is started and the equations are solved iteratively as a steady-state or transient.
• Finally a postprocessor is used for the analysis and visualization of the resulting solution.Wikipedia · CC-BY-SA 许可下的文字Direct numerical simulation (DNS) -- CFD-Wiki, the free CFD …
A direct numerical simulation (DNS) is a simulation in computational fluid dynamics in which the Navier-Stokes equations are numerically solved without any turbulence model. This means …
Large eddy simulation - Wikipedia
在en.wikipedia.org上查看更多信息An LES filter can be applied to a spatial and temporal field ϕ ( x , t ) {\displaystyle \phi ({\boldsymbol {x}},t)} and perform a spatial filtering operation, a temporal filtering operation, or both. The filtered field, denoted with a bar, is defined as: 1. ϕ ( x , t ) ¯ = ∫ − ∞ ∞ ∫ − ∞ ∞ ϕ ( r , τ ) G ( x − r , t − τ ) d τ d r {\displaystyle {\ove...- 预计阅读时间：8 分钟
Direct Numerical Simulation - an overview | ScienceDirect Topics
Direct numerical simulation (DNS) is used to solve instantaneous Navier–Stokes equations, resolving all scales, down to Kolmogorov dissipation scales, without using any models. It can …
直接数値シミュレーション - Wikipedia
直接数値シミュレーション（ちょくせつすうちシミュレーション、英: Direct Numerical Simulation 、DNS）とは、流れ（層流や乱流）を数値的に解析するCFD手法の1つであり、以 …
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Direct Numerical Simulation - an overview | ScienceDirect Topics
Direct Numerical Simulation (DNS) is a method that provides a deterministic solution to fluid mechanics equations, such as the Navier-Stokes equations, by advancing in time from an …
CFD理论|湍流数值模拟方法 - 知乎 - 知乎专栏
直接数值模拟（Direct Numerical Simulation，DNS）就是直接对瞬态的Navier-Stokes方程对湍流计算。 由于DNS方法没有对湍流流动作任何假设与简化，理论上可以得到精确的计算结果。
直接数值模拟 - 百度百科
直接数值模拟不需要对湍流建立模型，对于流动的控制方程直接采用数值计算求解。由于湍流是多尺度的不规则流动，要获得所有尺度的流动信息，对于空间和时间分辨率需求很高，因而计算量大、耗时多、对于 计算机内存 依赖性强。 直接 …
Introduction to Numerical Simulation (SMA 5211)
Topics include: mathematical formulations; network problems; sparse direct and iterative matrix solution techniques; Newton methods for nonlinear problems; discretization methods for ordinary, time-periodic and partial differential …
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