Differentiation of the functional in an optimization problem for diffusion and convective transfer coefficients of elliptic imperfect contact interface problems

• Published in: AIP conference proceedings Vol. 1759; no. 1
• Main Author: Manapova, Aigul
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Melville American Institute of Physics 10.08.2016
• Subjects: Coefficients; Continuity (mathematics); Convection-diffusion equation; Diffusion; Elliptic functions; Optimal control
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/1.4959736

We consider optimal control problems for second order elliptic equations with non-self-adjoint operators-convection-diffusion problems. Control processes are described by semi-linear convection-diffusion equation with discontinuous data and solutions (states) subject to the boundary interface conditions of imperfect type (i.e., problems with a jump of the coefficients and the solution on the interface; the jump of the solution is proportional to the normal component of the flux). Controls are involved in the coefficients of diffusion and convective transfer. We prove differentiability and Lipshitz continuity of the cost functional, depending on a state of the system and a control. The calculation of the gradients uses the numerical solutions of direct problems for the state and adjoint problems.