File:Onde stationnaire tuyau ouvert trois modes.gif
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Onde_stationnaire_tuyau_ouvert_trois_modes.gif (305 × 231 pixels, file size: 920 KB, MIME type: image/gif, looped, 100 frames, 10 s)
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Summary[edit]
DescriptionOnde stationnaire tuyau ouvert trois modes.gif |
English: Air pressure in case of standing waves in an open pipe, e.g. wind instrument; fundamental mode (top), mode II (middle) and mode III (bottom) (made with Scilab and Jasc Animation Shop 2.02)
Français : Pression de l'air dans le cas d'un onde stationnaire dans un tuyau ouvert, p. ex. un instrument à vent ; mode fondamental (haut), mode II (milieu) et mode III (bas) (réalisé avec Scilab et Jasc Animation Shop 2.02) |
Date | |
Source | Own work |
Author | Christophe Dang Ngoc Chan (cdang) |
Permission (Reusing this file) |
GFDL |
Other versions | smaller size: image:Onde stationnaire tuyau ouvert trois modes petit.gif |
Scilab source
This media was created with Scilab, a free open-source software. Here is a listing of the Scilab source used to create this file. |
clear;
clf;
deff('[y] = pression1(x,t)', 'y = 1+sin(t)*sin(x)')
deff('[y] = pression2(x,t)', 'y = 1+sin(2*t)*sin(2*x)')
deff('[y] = pression3(x,t)', 'y = 1+sin(3*t)*sin(3*x)')
x=0:0.05:%pi; // une demi-onde par tuyau
y=[-1,-0.9,0.9,1]; // pour la carte de gris
nx=max(size(x));
p1=2*ones(nx,4); // pour fixer les extremes de l'echelle de couleur,
p1(:,4)=zeros(nx,1); // les niveaux 0 et 2 sont affichés en permanence
p2 = p1 ; p3 = p1 ;
xset('colormap', graycolormap(256)); // niveaux de gris
for i=0:9
for j=0:9
t=(i*10+j)*0.02*%pi; // temps
clf;
p1(:,2)=feval(x,t,pression1);
p1(:,3)=p1(:,2);
p2(:,2)=feval(x,t,pression2);
p2(:,3)=p2(:,2);
p3(:,2)=feval(x,t,pression3);
p3(:,3)=p3(:,2);
scf(0);
subplot(3,1,1)
grayplot(x,y,p1,rect=[0,-1,%pi,1],axesflag=0);
subplot(3,1,2)
grayplot(x,y,p2,rect=[0,-1,%pi,1],axesflag=0);
subplot(3,1,3)
grayplot(x,y,p3,rect=[0,-1,%pi,1],axesflag=0);
nom='test\test'+code2str(i)+code2str(j)+'.gif'; // nom du fichier
xs2gif(0,nom,1); // sauvegarde
end;
end;
Licensing[edit]
I, the copyright holder of this work, hereby publish it under the following licenses:
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue |
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. | ||
| ||
This licensing tag was added to this file as part of the GFDL licensing update.http://creativecommons.org/licenses/by-sa/3.0/CC BY-SA 3.0Creative Commons Attribution-Share Alike 3.0truetrue |
You may select the license of your choice.
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 12:35, 16 November 2006 | 305 × 231 (920 KB) | Cdang (talk | contribs) | == Summary == {{Information |Description={{en|Air pressure in case of standing waves in an open pipe, e.g. wind instrument; fundamental mode (top), mode II (middle) and mode III (bottom) (made with [http://www.scilab.org/ Scilab] and Jasc Animation Shop |
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