File:Otto Engineering Thermodynamics.png

Otto cycle

prologues := 2;
beginfig(1);
  numeric u;
  u := .4cm;
  drawarrow (0, 0) -- (10u, 0);
  label.bot("V", (10u, 0));
  drawarrow (0, 0) -- (0, 10u);
  label.lft("p", (0, 10u));
  vardef arrowhead expr p =
    save A,u,a,b; pair A,u; path a,b;
    A := point length(p)/2 of p;
    u := unitvector(direction length(p)/2 of p);
    a := A{-u}..(A - ahlength*u rotated 30);
    b := A{-u}..(A - ahlength*u rotated -30);
    (a & reverse(a) & b & reverse(b))--cycle
  enddef;
  pair p, q, r, s;
  p := (2u, 8u);
  q := (7u, 3u);
  s := p shifted -(0, 3u);
  r := q shifted -(0, u);
  dotlabel.lft("1", s);
  drawarrow s .. p;
  dotlabel.lft("2", p);
  drawarrow p .. controls (((p + q)/2) shifted -(.7u, .7u)) ..  q;
  dotlabel.rt("3", q);
  drawarrow r .. controls (((s + r)/2) shifted -(.5u, .5u)) ..  s;
  dotlabel.bot("4", r);
  drawarrow q .. r;
  currentpicture := currentpicture scaled 2;
  currentpicture := currentpicture shifted -llcorner currentpicture;
endfig;
end;

Licensing[edit | edit source]

This file was uploaded without any copyright or license information. Webaware believes that this file was created by the uploader and has by uploading it to Wikibooks, granted permission to copy, distribute and/or modify this file 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. Subject to disclaimers. To the uploader: Please clarify the copyright status of this file. If you indeed wished it to be released under the GFDL please replace {{GFDL-presumed}} with {{GFDL-self}} by editing the file description page. Alternatively you can choose a different license, or request that the file be deleted by using {{delete|requested by uploader}}. See Category:Presumed GFDL images for more information about these images.