2DTurbo v1.0.2 MacOSX 英文正式版(應用軟體)
內容說明:
應用程序執行的直接數值模擬（DNS）
Navier-Stokes方程的求解二維
不可壓縮均勻各向同性湍流。這些方程是一組
非線性偏微分方程。時間步長
用一個簡單的歐拉法的時間步長為執行
CFL數計算，以便不超過給定數
（應該是小於0.8，否則模擬吹）。 “
在傅立葉空間中的方程進行求解，計算
非線性項轉化為一個簡單的乘法。主要的
所消耗的CPU使用率改造渦度場，
第四之間的正常空間，時間步
執行，其中非線性項是在傅立葉空間
計算出來的。
該二維的計算區域是週期性的在垂直
和水平方向，因此你可以在任何時候採取一個管理單元
的電流的計算來創建一個圖像拍攝。的圖像
可以作為桌面背景平鋪模式。您可以
在您的網站上，還可以使用圖像作為背景。
在域菜單中，您可以切換您正在查看的變量：
速度，U-V-速度，動能，渦度和流
功能。
英文說明:
This application performs a Direct Numerical Simulation (DNS) where
the Navier-Stokes equations are solved for two-dimensional
incompressible homogeneous turbulence. These equations are a set of
nonlinear partial differential equations. The time stepping is
performed with a simple Euler method where the time step is
calculated so that the CFL number does not exceeds the given number
(should be less than 0.8 otherwise the simulation blows up). The
equations are solved in the Fourier space where the calculation of
the nonlinear term transforms to a simple multiplication. The main
CPU usage is consumed by transforming the vorticity field back and
fourth between the Normal space where the time-stepping is
performed and the Fourier space where the nonlinear term is
calculated.
The two-dimensional calculation area is periodic both in vertical
and horizontal direction, hence you can at any time take a snap
shot of the current calculation to create an image. The image
created can be used as desktop background in tile mode. You can
also use the image as your background on your website.
In the Field menu you can switch the variable you are viewing:
U-Velocity, V-velocity, Kinetic Energy, Vorticity and Stream
Function.
圖片說明:
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