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literal programming update and pandoc
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星期四, 2018/7/5 | ||
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* keep work with jounal (Good for you) | ||
[[https://github.com/howardabrams/dot-files/blob/b2e8a36832d4b9964042aca839f3ff0a3e6724a7/emacs-org.org]] | ||
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[[https://github.com/jueqingsizhe66/ranEmacs.d]] | ||
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** 15:06 awk的fluent文件重命名 | ||
1. 第一步:备份 | ||
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确认是$4还是$5 | ||
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``` awk | ||
ls sphere*.cas|awk -F"-" 'BEGIN{i=1}{print substr($4,0,length($4)-8),",",i; i=i+1}' > filename0.csv | ||
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ls sphere*.cas|awk -F"-" 'BEGIN{i=1}{print substr($5,0,length($5)-8),",",i; i=i+1}' > filename0.csv | ||
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``` | ||
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星期五, 2018/7/6 | ||
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* keep work with jounal (Good for you) | ||
[[https://github.com/howardabrams/dot-files/blob/b2e8a36832d4b9964042aca839f3ff0a3e6724a7/emacs-org.org]] | ||
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[[https://github.com/jueqingsizhe66/ranEmacs.d]] | ||
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** 15:35 功率系数 | ||
| 物理量 | 数值 | 单位 | | ||
|-----------------+------------+-------| | ||
| kinety visocity | 1.49*10^-5 | m^2/s | | ||
| Velocity | 7 | m/s | | ||
| Omega | 71.9 | rpm | | ||
| densigy | 1.185 | kg/m3 | | ||
| Turbine Radisu | 5.0289 | | | ||
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*** 三个描述风力机工况的物理量 | ||
1. 雷诺数 | ||
Re=Velocity*Length/(kinety viscosify) | ||
雷诺数,也叫作特征雷诺数特征速度选取边界层外边界对应点的速度 | ||
也就是风力机展向雷诺数是不断变化的,对应的特征长度也是应该变化的, | ||
比如当地的半径,这样才可以区分展向的雷诺数的区别 | ||
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2. 尖速比 | ||
lambda=(omega*R)/Velocity*cos(yawAngle) | ||
3. 功率系数 | ||
Cpo=(Omega*Torque)/(0.5*density*Velocity^3*pi*R^2) | ||
4. 斯特劳哈尔书 | ||
一般Re>1000 斯特劳哈尔数Sr=0.21 | ||
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旋涡脱落频率f=Sr*V/d(特征直径) | ||
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| YawAngle | Cpo | lambda | Re | Cp(0)*Cos3 | | ||
|----------+-------------+-------------+------------+-------------| | ||
| 0 | 0.36393047 | 5.409192792 | 2362570.47 | 0.36393047 | | ||
| 5 | 0.360205711 | 5.388609181 | 2362570.47 | 0.359791664 | | ||
| 10 | 0.350667889 | 5.327015002 | 2362570.47 | 0.34759442 | | ||
| 15 | 0.334416055 | 5.224879024 | 2362570.47 | 0.327981807 | | ||
| 20 | 0.309825924 | 5.082978562 | 2362570.47 | 0.301978394 | | ||
| 25 | 0.285878383 | 4.902393566 | 2362570.47 | 0.270922801 | | ||
| 30 | 0.255544954 | 4.684498396 | 2362570.47 | 0.236379778 | | ||
| 45 | 0.149933042 | 3.824876955 | 2362570.47 | 0.128668857 | | ||
| 60 | 0.04663644 | 2.70459648 | 2362570.47 | 0.045491313 | |
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