en Material Managment Material Managment پژوهشي Research <p><font face="times new roman,times,serif" size="2"><em> <strong>Abstrac</strong>t: This study deals with modeling of heat flux at the external surface of combustion chamber wall in an internal combustion (IC) engine as a function of crank angle. This investigation results in an inverse heat conduction problem in the cylinder wall. Alifanov regularization method is used for solving this inverse problem. This problem study as an optimization problem in which a squared residual unctional is minimized with the conjugate gradient method. This algorithm tests for an example in some cases and numerical results are shown. </em></font></p><p>  </p><p>  </p> Keywords: Crank angle, Internal combustion engine, Inverse heat conduction, Conjugate gradient method. 31 34 http://ijiepr.iust.ac.ir/browse.php?a_code=A-10-1-38&slc_lang=en&sid=1 A. Shidfar 18003194753284600107 18003194753284600107 Yes M. Garshasbi m_garshasbi@iust.ac.ir 18003194753284600108 18003194753284600108 No