Three Dimensional Design Optimization Using Adjoint Method with Newton Krylov Solver

Three dimensional design optimization using analytical and numerical jacobians Eyi, Sinan; Degirmenci, M.; Yumusak, M. (null; 2011-12-01) A design optimization method based on three dimensional Euler equations is developed. A finite volume method is implemented to discretize the Euler equations. Newton's method is used to solve the discretized form of Euler equations. Newton's method requires the calculation of the Jacobian matrix which is the derivative of the residual vector with respect to the flux vector. Different upwind methods are used in the calculation of flux vectors. Numerical and analytical methods are utilized in the evaluation o...
Three dimensional aerodynamic analysis of missiles by a panel method Başoğlu, Osman; Özyörük, Yusuf; Department of Aeronautical Engineering (2002) Panel methods are extensively used in aerodynamic analysis of missiles in early stages of their development. An existing TUBİTAK-SAGE panel code is modified and improved for routine and more efficient calculation of the aerodynamic coefficients of various missile configurations at subsonic and supersonic flight conditions. Particularly, the poor convergence, user unfriendliness and poor output characters of this code have been improved by modifying and adding new routines to it. Now the code with an incorpo...
Three dimensional finite difference time domain simulations on harmonic motion microwave doppler imaging method using realistic tissue models Tatar, Fikret; Gençer, Nevzat Güneri; Department of Electrical and Electronics Engineering (2019) Imaging of electromagnetic and elastic properties of the breast tissue can be used to identify cancerous regions in the dense fibro glandular breast tissue at the early stage. Numerical simulations are useful in predicting the performance of the imaging method. In Harmonic Motion Microwave Doppler Imaging Method (HMMDI), tissue is vibrated locally, microwave signals illuminate the tissue and the back scattered Doppler signal component is used to form images. In this thesis, forward problem of HMMDI method i...
Three dimensional frame element formulation for nonlinear analysis of semi rigid steel structures Özel, Halil Fırat; Sarıtaş, Afşin; Karakaş, Zafer (null; 2016-09-21) In this paper, a force-based three-dimensional frame finite element formulation with spread of inelasticity through the element and localized nonlinear semi-rigid connections is developed. The proposed model utilizes Euler-Bernoulli beam theory assumptions, and adopts fiber discretization of monitored sections along element length and section depth for the spread of inelasticity in order to capture axial force and biaxial bending moment interaction. Defining any type of semi-rigid either linear or nonlinear...
Three Dimensional Flow Analysis of a Cavity-Based Scramjet Combustor Rouzbar, Ramin; Eyi, Sinan (2015-06-22)

Citation Formats

A. Yıldırım and S. Eyi, “Three Dimensional Design Optimization Using Adjoint Method with Newton Krylov Solver,” 2016, vol. 2016, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/47591.