Ce document regroupe les codes TIKZ des figures utilisées pour le cours "DYNAMIQUE DES FUIDES PARFAITS" situé à la page http://femto-physique.fr/mecanique_des_fluides/mecaflu_C2.php
\begin
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% !TEX encoding = UTF-8 Unicode
% J.Roussel
% Ce document regroupe les codes TIKZ des figures utilisées pour le cours "DYNAMIQUE DES FUIDES PARFAITS" situé à la page http://femto-physique.fr/mecanique_des_fluides/mecaflu_C2.php
%-------------------------------------------
\documentclass[11pt]{article}
\input{styles_mecaflu}
\title{Figures TikZ du cours "Fluides parfaits}
\begin{document}
% =========================================
% Notion de force de pression
% =========================================
\begin{tikzpicture} [scale=0.9]
\shadedraw[color=gray,top color=white,bottom color=gray] (-1.5,4)--++(0,-4)--++(5,0)--++(0,4)--cycle;
\draw[] (2,4)node[below left]{\small Fluide};
\patate[shift={(0,2.5)}, fill=lightgray,line width=2pt];
\draw[vecteur] (-0.1,2.3)--++(-1,0.2) node[above]{\small$\overrightarrow{\mathrm{d}S}^{\textrm{ext}}$};
\draw[force] (-0.1,2.3)--++(2,-0.4) node[above]{\small$\overrightarrow{\mathrm{d}F}_{\textrm{int}}$};
\node (M) at (0.5,2) {};
\node (MM) at (0.5,0.5){};
\draw[->] (M) to[out=180,in=180] (MM.west)node[right]{Particule de fluide} ;
\draw[lightgray,line width=2pt,shift={(-0.1,2.2)}](0,0)--++(0.04,0.2);
\end{tikzpicture}
% =========================================
% Expérience de Torricelli (1644)
% =========================================
\begin{tikzpicture} [scale=0.6]
\shadedraw[color=gray,top color=gray,bottom color=black] (-4,2)--++(0,-1)--++(8,0)--++(0,1)--cycle;
\shadedraw[color=gray,top color=white,bottom color=gray] (-0.25,2)--++(0,5.5)--(0.25,7.5)--(0.25,2)--cycle;
\draw[line width=1pt] (-0.25,1.5)--++(0,6.5)to[bend left=85](0.25,8)--++(0,-6.5);
\draw[line width=1pt] (-4,2.2)--++(0,-1.2)--++(8,0)--++(0,1.2);
%\draw[line width=2pt](-4,0)--++(8,0);
\draw[vecteur] (3,4)--++(0,-1) node[pos=0.5,right]{$\vec g$};
\draw[doublefleche](-0.5,2)--++(0,5.5) node[midway, left]{$h$};
\draw[<-] (0,5)--++(1,0) node[right]{Hg$_{\textrm{liq}}$};
\draw[<-] (0,8)--++(1,0) node[right]{Vide};
\foreach \x in {-1,-2,1,2,3}\draw[force](\x,2.5)--++(0,-0.5);
\draw[force](-3,2.5) node[above]{$p_{\textrm{atm}}$}--++(0,-0.5);
\end{tikzpicture}
% =========================================
% Manomètre à liquide
% =========================================
\begin{tikzpicture} [scale=0.7]
\shadedraw[color=gray,top color=white,bottom color=gray] (0,-1.5)--++(0,-3.5)--++(-2,0)--++(0,1)--++(0.3,0)--++(0,-0.7)
--++(1.4,0)--++(0,3.2)--cycle;
\draw[line width=1pt](0,0)--++(0,-5)--++(-2,0)--++(0,2)--++(-2,0)--++(0,-0.5)--++(-3,0)--++(0,3)--++(3,0)--++(0,-2.2)--++(2.3,0)--++(0,-2)--++(1.4,0)--++(0,4.7);
\draw[vecteur] (1,-4)--++(0,-1) node[pos=0.5,right]{$\vec g$};
\draw[|<->|](-1,-1.5)--++(0,-2.5) node[midway, left]{$h$};
\draw[<-] (0,-3)--++(1,0) node[right]{Liquide};
\node[text width=2cm,text centered] at(-5.5,-2){Gaz sous pression $p>p_{\textrm{atm}}$};
\node[text width=3cm,text centered] at(0,0.7){Atmosph\`ere \`a la pression $p_{\textrm{atm}}$};
\end{tikzpicture}
% =========================================
% Nivellement barométrique : décroissance exponentielle de la pression avec l'altitude.
% =========================================
\begin{tikzpicture}[scale=1]
\begin{axis}[
grid=major,
axis lines=middle,% bottom,top
inner axis line style={=>},
xlabel={$z$},
ylabel={$p$},
xtick={1,2.3,4.6},
xticklabels={$H$,$2.3H$,$4.6H$},
ytick={4,1.47,0.4,0.04},
yticklabels={$p_{0}$,$37\%\,p_{0}$,$10\%\,p_{0}$,$1\%\,p_{0}$},
ymin=0,
ymax=4.5,
xmin=0,
xmax=5.4,]
\addplot+[mark=none,domain=0:5,samples=100]{(4)*(exp(- x))};
\addplot+[mark=none, domain=0:4,samples=15]{4-4*x};
\end{axis}
\end{tikzpicture}
% =========================================
% Cylindre en rotation.
% =========================================
\begin{tikzpicture} [scale=0.7]
\coordinate(M) at (1.5,3);
\shadedraw[color=gray,top color=white,bottom color=gray] (-2.5,6) ..controls +(1,-1) and +(-1,-1).. (2.5,6)--++(0,-6)--++(-5,0)--cycle;
\draw[line width=1pt] (-2.5,7)--++(0,-7)--++(5,0)--++(0,7);
\draw[line width=3pt](-4,0)--++(8,0);
\fill [pattern=north east lines] (-4,0)--++(8,0)--++(0,-0.5)--++(-8,0)-- cycle;
\draw[tiret] (0,0)--++(0,8);
\draw[->] (-0.2,7) ..controls +(-1,-0.2) and +(1,-0.2).. (0.2,7) node[above]{$\omega$};
\draw[vecteur] (M)node{$\bullet$}--++(1,0) node[right]{$\overrightarrow{u_{r}}$};
\draw[vecteur] (M)--++(0,1) node[above]{$\overrightarrow{u_{z}}$};
\draw (M)++(1pt,1pt)node[above right]{$\otimes$$\overrightarrow{u_{\theta}}$};
\draw[->] (0,3)--(M) node[pos=0.5,above]{$r$} node[below]{M$(r,\theta,z)$};
%\draw[tiret] (0,5.6) node[above]{\tiny Position d'\'equilibre};
\draw[<-] (2,5)--++(1,0) node[right]{Liquide};
\draw[vecteur] (3,2)--++(0,-0.5) node[pos=0.5,right]{$\vec g$};
\end{tikzpicture}
% =========================================
% Poussé d'archimède
% =========================================
\begin{tikzpicture} [scale=0.7]
\coordinate(M) at (0,4);
\coordinate(N) at (1,3);
\coordinate(P) at (0,2);
\coordinate(Q) at (-1,3);
\shadedraw[color=gray,top color=white,bottom color=gray] (-2.5,5.6)--++(0,-5.6)--++(5,0)--++(0,5.6)--cycle;
\draw[line width=1pt] (-2.5,7)--++(0,-7)--++(5,0)--++(0,7);
\draw[line width=2pt](-4,0)--++(8,0);
\draw[tiret] (0,5.6) node[color=black,above]{\tiny Position d'\'equilibre};
\draw[<-] (2,5)--++(0,2) node[above]{Liquide};
\draw[vecteur] (3,2)--++(0,-0.5) node[pos=0.5,right]{$\vec g$};
\draw[pattern=north east lines] (-1,2) rectangle(1,4);
\draw[force,shift={(M)}] (0,1)--(0,0) node[above right]{$\overrightarrow{F}_{\mathrm{haut}}$};
\draw[force,shift={(N)}] (1.5,0)--(0,0) node[pos=0.5,above]{$\overrightarrow{F}_{\mathrm{droite}}$};
\draw[force,shift={(P)}] (0,-2)--(0,0) node[pos=0.5,left]{$\overrightarrow{F}_{\mathrm{bas}}$};
\draw[force,shift={(Q)}] (-1.5,0)--(0,0) node[pos=0.5,below]{$\overrightarrow{F}_{\mathrm{gauche}}$};
\end{tikzpicture}
% =========================================
% généralisation de la poussée d'archimède
% =========================================
\begin{tikzpicture} [scale=0.8]
\coordinate(M) at (0.5,2);
\shadedraw[color=gray,top color=white,bottom color=gray] (-2.5,5.6)--++(0,-5.6)--++(5,0)--++(0,5.6)--cycle;
\draw[tiret] (-2.5,5)--++(5,0) node[above]{\tiny Isobare};
\draw[tiret] (-2.5,4)--++(5,0);
\draw[tiret] (-2.5,3)--++(5,0);
\draw[tiret] (-2.5,2)--++(5,0);
\draw[tiret] (-2.5,1)--++(5,0);
\draw[] (2,0)node[above left]{\small Fluide au repos};
\draw[vecteur] (2,2)--++(0,-0.5) node[pos=0.5,right]{$\vec g$};
\patate[shift={(0,2.5)},pattern=north east lines,line width=2pt];
\draw[vecteur] (-0.1,2.3)--++(-1,0.2) node[above]{\small$\mathrm{d}S\vec n$};
\draw[lightgray,line width=2pt,shift={(-0.1,2.2)}](0,0)--++(0.04,0.2);
\draw[force] (M)--++(0,2) node[right]{$\overrightarrow{\Pi}$};
\end{tikzpicture}
% =========================================
% Formule de Torricelli
% =========================================
\begin{tikzpicture} [scale=0.7,decoration={markings,mark=at position 1cm with {\arrow[blue]{stealth};}}]
\coordinate(A) at (-1,5.6);
\coordinate(B) at (2.6,0.15);
\shadedraw[color=gray,top color=white,bottom color=gray] (-2.5,5.6)--++(0,-5.6)--++(5.1,0)--++(0,0.3)--++(-0.1,0)--++(0,5.3)--cycle;
\draw[line width=1pt] (-2.5,6)--++(0,-6)--++(5.1,0);
\draw[line width=1pt] (2.5,6)--++(0,-5.7)--++(0.1,0);
\draw[dashed,,<->] (0,0)--(0,5.6) node[midway,right]{$h$};
\draw (2.5,0.5) node[]{\scriptsize section $s$};
\draw[tiret] (0,5.6) node[color=black,above]{\scriptsize section $S$};
\draw[<-] (2,5)--++(0,1.5) node[right]{Liquide};
\draw[vecteur] (3,2)--++(0,-1) node[pos=0.5,right]{$\vec g$};
\draw[vecteur] (2.5,0.15)--++(1,0)node[below]{$\vec v (B)$};
\draw[blue,postaction={decorate}] (A)node{$\bullet$}node[left]{\small A} ..controls +(0,-2) and +(-3,0).. (B)node{$\bullet$}node[below]{\small B};
\end{tikzpicture}
% =========================================
% le tube de pitot
% =========================================
\begin{tikzpicture} [scale=1,decoration={markings,mark=at position 1cm with {\arrow[blue]{stealth};}}]
\draw[pattern=north east lines,rounded corners=18pt] (0,-0.6) rectangle(6,0.6);
\draw[blue,postaction={decorate}] (-2,0.1) ..controls +(4.5,0) and +(-8.5,0).. (5,0.8);
\draw[blue,postaction={decorate}] (-2,0.3) ..controls +(3,0) and +(-7,0).. (5,0.9);
\draw[blue,postaction={decorate}] (-2,0.5) ..controls +(1.5,0) and +(-5.5,0).. (5,1);
\draw[blue,postaction={decorate}] (-2,0.7) ..controls +(1.5,0) and +(-4,0).. (5,1.1);
\draw[blue,postaction={decorate}] (-2,-0.1) ..controls +(4.5,0) and +(-8.5,0).. (5,-0.8);
\draw[blue,postaction={decorate}] (-2,-0.3) ..controls +(3,0) and +(-7,0).. (5,-0.9);
\draw[blue,postaction={decorate}] (-2,-0.5) ..controls +(1.5,0) and +(-5.5,0).. (5,-1);
\draw[blue,postaction={decorate}] (-2,-0.7) ..controls +(1.5,0) and +(-4,0).. (5,-1.1);
\draw[blue,postaction={decorate}] (-2,0)--(0,0); ;
\draw [double distance = 3pt] (0,0) --++ (6,0);
\draw [double distance = 3pt] (4,0.6)|-++ (2,-0.4);
\node[draw,fill=white,rectangle,minimum height=1cm] (P) at(6,0){\small Manom\`etre};
\draw[](0,0) node{\scriptsize $\bullet$}node[above left]{A};
\draw[](4,0.6) node{\scriptsize $\bullet$}node[above=2pt]{B};
\draw[](2,0.1) node[above]{\small Tube de Pitot};
\end{tikzpicture}
\end{document}
% !TEX encoding = UTF-8 Unicode
% J.Roussel
% Ce document regroupe les codes TIKZ des figures utilisées pour le cours "DYNAMIQUE DES FUIDES PARFAITS" situé à la page http://femto-physique.fr/mecanique_des_fluides/mecaflu_C2.php
%-------------------------------------------
\documentclass[11pt]{article}
\input{styles_mecaflu}
\begin{document}
% =========================================
% Notion de force de pression
% =========================================
\begin{tikzpicture} [scale=0.9]
\shadedraw[color=gray,top color=white,bottom color=gray] (-1.5,4)--++(0,-4)--++(5,0)--++(0,4)--cycle;
\draw[] (2,4)node[below left]{\small Fluide};
\patate[shift={(0,2.5)}, fill=lightgray,line width=2pt];
\draw[vecteur] (-0.1,2.3)--++(-1,0.2) node[above]{\small$\overrightarrow{\mathrm{d}S}^{\textrm{ext}}$};
\draw[force] (-0.1,2.3)--++(2,-0.4) node[above]{\small$\overrightarrow{\mathrm{d}F}_{\textrm{int}}$};
\node (M) at (0.5,2) {};
\node (MM) at (0.5,0.5){};
\draw[->] (M) to[out=180,in=180] (MM.west)node[right]{Particule de fluide} ;
\draw[lightgray,line width=2pt,shift={(-0.1,2.2)}](0,0)--++(0.04,0.2);
\end{tikzpicture}
% =========================================
% Expérience de Torricelli (1644)
% =========================================
\begin{tikzpicture} [scale=0.6]
\shadedraw[color=gray,top color=gray,bottom color=black] (-4,2)--++(0,-1)--++(8,0)--++(0,1)--cycle;
\shadedraw[color=gray,top color=white,bottom color=gray] (-0.25,2)--++(0,5.5)--(0.25,7.5)--(0.25,2)--cycle;
\draw[line width=1pt] (-0.25,1.5)--++(0,6.5)to[bend left=85](0.25,8)--++(0,-6.5);
\draw[line width=1pt] (-4,2.2)--++(0,-1.2)--++(8,0)--++(0,1.2);
%\draw[line width=2pt](-4,0)--++(8,0);
\draw[vecteur] (3,4)--++(0,-1) node[pos=0.5,right]{$\vec g$};
\draw[doublefleche](-0.5,2)--++(0,5.5) node[midway, left]{$h$};
\draw[<-] (0,5)--++(1,0) node[right]{Hg$_{\textrm{liq}}$};
\draw[<-] (0,8)--++(1,0) node[right]{Vide};
\foreach \x in {-1,-2,1,2,3}\draw[force](\x,2.5)--++(0,-0.5);
\draw[force](-3,2.5) node[above]{$p_{\textrm{atm}}$}--++(0,-0.5);
\end{tikzpicture}
% =========================================
% Manomètre à liquide
% =========================================
\begin{tikzpicture} [scale=0.7]
\shadedraw[color=gray,top color=white,bottom color=gray] (0,-1.5)--++(0,-3.5)--++(-2,0)--++(0,1)--++(0.3,0)--++(0,-0.7)
--++(1.4,0)--++(0,3.2)--cycle;
\draw[line width=1pt](0,0)--++(0,-5)--++(-2,0)--++(0,2)--++(-2,0)--++(0,-0.5)--++(-3,0)--++(0,3)--++(3,0)--++(0,-2.2)--++(2.3,0)--++(0,-2)--++(1.4,0)--++(0,4.7);
\draw[vecteur] (1,-4)--++(0,-1) node[pos=0.5,right]{$\vec g$};
\draw[|<->|](-1,-1.5)--++(0,-2.5) node[midway, left]{$h$};
\draw[<-] (0,-3)--++(1,0) node[right]{Liquide};
\node[text width=2cm,text centered] at(-5.5,-2){Gaz sous pression $p>p_{\textrm{atm}}$};
\node[text width=3cm,text centered] at(0,0.7){Atmosph\`ere \`a la pression $p_{\textrm{atm}}$};
\end{tikzpicture}
% =========================================
% Nivellement barométrique : décroissance exponentielle de la pression avec l'altitude.
% =========================================
\begin{tikzpicture}[scale=1]
\begin{axis}[
grid=major,
axis lines=middle,% bottom,top
inner axis line style={=>},
xlabel={$z$},
ylabel={$p$},
xtick={1,2.3,4.6},
xticklabels={$H$,$2.3H$,$4.6H$},
ytick={4,1.47,0.4,0.04},
yticklabels={$p_{0}$,$37\%\,p_{0}$,$10\%\,p_{0}$,$1\%\,p_{0}$},
ymin=0,
ymax=4.5,
xmin=0,
xmax=5.4,]
\addplot+[mark=none,domain=0:5,samples=100]{(4)*(exp(- x))};
\addplot+[mark=none, domain=0:4,samples=15]{4-4*x};
\end{axis}
\end{tikzpicture}
% =========================================
% Cylindre en rotation.
% =========================================
\begin{tikzpicture} [scale=0.7]
\coordinate(M) at (1.5,3);
\shadedraw[color=gray,top color=white,bottom color=gray] (-2.5,6) ..controls +(1,-1) and +(-1,-1).. (2.5,6)--++(0,-6)--++(-5,0)--cycle;
\draw[line width=1pt] (-2.5,7)--++(0,-7)--++(5,0)--++(0,7);
\draw[line width=3pt](-4,0)--++(8,0);
\fill [pattern=north east lines] (-4,0)--++(8,0)--++(0,-0.5)--++(-8,0)-- cycle;
\draw[tiret] (0,0)--++(0,8);
\draw[->] (-0.2,7) ..controls +(-1,-0.2) and +(1,-0.2).. (0.2,7) node[above]{$\omega$};
\draw[vecteur] (M)node{$\bullet$}--++(1,0) node[right]{$\overrightarrow{u_{r}}$};
\draw[vecteur] (M)--++(0,1) node[above]{$\overrightarrow{u_{z}}$};
\draw (M)++(1pt,1pt)node[above right]{$\otimes$$\overrightarrow{u_{\theta}}$};
\draw[->] (0,3)--(M) node[pos=0.5,above]{$r$} node[below]{M$(r,\theta,z)$};
%\draw[tiret] (0,5.6) node[above]{\tiny Position d'\'equilibre};
\draw[<-] (2,5)--++(1,0) node[right]{Liquide};
\draw[vecteur] (3,2)--++(0,-0.5) node[pos=0.5,right]{$\vec g$};
\end{tikzpicture}
% =========================================
% Poussé d'archimède
% =========================================
\begin{tikzpicture} [scale=0.7]
\coordinate(M) at (0,4);
\coordinate(N) at (1,3);
\coordinate(P) at (0,2);
\coordinate(Q) at (-1,3);
\shadedraw[color=gray,top color=white,bottom color=gray] (-2.5,5.6)--++(0,-5.6)--++(5,0)--++(0,5.6)--cycle;
\draw[line width=1pt] (-2.5,7)--++(0,-7)--++(5,0)--++(0,7);
\draw[line width=2pt](-4,0)--++(8,0);
\draw[tiret] (0,5.6) node[color=black,above]{\tiny Position d'\'equilibre};
\draw[<-] (2,5)--++(0,2) node[above]{Liquide};
\draw[vecteur] (3,2)--++(0,-0.5) node[pos=0.5,right]{$\vec g$};
\draw[pattern=north east lines] (-1,2) rectangle(1,4);
\draw[force,shift={(M)}] (0,1)--(0,0) node[above right]{$\overrightarrow{F}_{\mathrm{haut}}$};
\draw[force,shift={(N)}] (1.5,0)--(0,0) node[pos=0.5,above]{$\overrightarrow{F}_{\mathrm{droite}}$};
\draw[force,shift={(P)}] (0,-2)--(0,0) node[pos=0.5,left]{$\overrightarrow{F}_{\mathrm{bas}}$};
\draw[force,shift={(Q)}] (-1.5,0)--(0,0) node[pos=0.5,below]{$\overrightarrow{F}_{\mathrm{gauche}}$};
\end{tikzpicture}
% =========================================
% généralisation de la poussée d'archimède
% =========================================
\begin{tikzpicture} [scale=0.8]
\coordinate(M) at (0.5,2);
\shadedraw[color=gray,top color=white,bottom color=gray] (-2.5,5.6)--++(0,-5.6)--++(5,0)--++(0,5.6)--cycle;
\draw[tiret] (-2.5,5)--++(5,0) node[above]{\tiny Isobare};
\draw[tiret] (-2.5,4)--++(5,0);
\draw[tiret] (-2.5,3)--++(5,0);
\draw[tiret] (-2.5,2)--++(5,0);
\draw[tiret] (-2.5,1)--++(5,0);
\draw[] (2,0)node[above left]{\small Fluide au repos};
\draw[vecteur] (2,2)--++(0,-0.5) node[pos=0.5,right]{$\vec g$};
\patate[shift={(0,2.5)},pattern=north east lines,line width=2pt];
\draw[vecteur] (-0.1,2.3)--++(-1,0.2) node[above]{\small$\mathrm{d}S\vec n$};
\draw[lightgray,line width=2pt,shift={(-0.1,2.2)}](0,0)--++(0.04,0.2);
\draw[force] (M)--++(0,2) node[right]{$\overrightarrow{\Pi}$};
\end{tikzpicture}
% =========================================
% Formule de Torricelli
% =========================================
\begin{tikzpicture} [scale=0.7,decoration={markings,mark=at position 1cm with {\arrow[blue]{stealth};}}]
\coordinate(A) at (-1,5.6);
\coordinate(B) at (2.6,0.15);
\shadedraw[color=gray,top color=white,bottom color=gray] (-2.5,5.6)--++(0,-5.6)--++(5.1,0)--++(0,0.3)--++(-0.1,0)--++(0,5.3)--cycle;
\draw[line width=1pt] (-2.5,6)--++(0,-6)--++(5.1,0);
\draw[line width=1pt] (2.5,6)--++(0,-5.7)--++(0.1,0);
\draw[dashed,,<->] (0,0)--(0,5.6) node[midway,right]{$h$};
\draw (2.5,0.5) node[]{\scriptsize section $s$};
\draw[tiret] (0,5.6) node[color=black,above]{\scriptsize section $S$};
\draw[<-] (2,5)--++(0,1.5) node[right]{Liquide};
\draw[vecteur] (3,2)--++(0,-1) node[pos=0.5,right]{$\vec g$};
\draw[vecteur] (2.5,0.15)--++(1,0)node[below]{$\vec v (B)$};
\draw[blue,postaction={decorate}] (A)node{$\bullet$}node[left]{\small A} ..controls +(0,-2) and +(-3,0).. (B)node{$\bullet$}node[below]{\small B};
\end{tikzpicture}
% =========================================
% le tube de pitot
% =========================================
\begin{tikzpicture} [scale=1,decoration={markings,mark=at position 1cm with {\arrow[blue]{stealth};}}]
\draw[pattern=north east lines,rounded corners=18pt] (0,-0.6) rectangle(6,0.6);
\draw[blue,postaction={decorate}] (-2,0.1) ..controls +(4.5,0) and +(-8.5,0).. (5,0.8);
\draw[blue,postaction={decorate}] (-2,0.3) ..controls +(3,0) and +(-7,0).. (5,0.9);
\draw[blue,postaction={decorate}] (-2,0.5) ..controls +(1.5,0) and +(-5.5,0).. (5,1);
\draw[blue,postaction={decorate}] (-2,0.7) ..controls +(1.5,0) and +(-4,0).. (5,1.1);
\draw[blue,postaction={decorate}] (-2,-0.1) ..controls +(4.5,0) and +(-8.5,0).. (5,-0.8);
\draw[blue,postaction={decorate}] (-2,-0.3) ..controls +(3,0) and +(-7,0).. (5,-0.9);
\draw[blue,postaction={decorate}] (-2,-0.5) ..controls +(1.5,0) and +(-5.5,0).. (5,-1);
\draw[blue,postaction={decorate}] (-2,-0.7) ..controls +(1.5,0) and +(-4,0).. (5,-1.1);
\draw[blue,postaction={decorate}] (-2,0)--(0,0); ;
\draw [double distance = 3pt] (0,0) --++ (6,0);
\draw [double distance = 3pt] (4,0.6)|-++ (2,-0.4);
\node[draw,fill=white,rectangle,minimum height=1cm] (P) at(6,0){\small Manom\`etre};
\draw[](0,0) node{\scriptsize $\bullet$}node[above left]{A};
\draw[](4,0.6) node{\scriptsize $\bullet$}node[above=2pt]{B};
\draw[](2,0.1) node[above]{\small Tube de Pitot};
\end{tikzpicture}
\end{document}