A three dimensional parallel and adaptive Euler flow solver for unstructured grids

A Numerical approach for the solutions of fluid dynamics problems in the presence of magnetic field Oğlakkaya, Fatma Sidre; Bozkaya, Canan; Department of Mathematics (2018) This thesis is conducted to investigate numerically the two-dimensional steady or unsteady, laminar flow of viscous, incompressible and electrically conducting fluids in complex geometries subject to either uniform inclined magnetic field or nodal magnetic sources. Specifically, the hydromagnetic natural/mixed convection of either conventional fluid or water-based nanofluid flow and the heat transfer are considered in irregular enclosures with wavy walls. The equations governing the steady magnetohydrodynam...
A New modal superposition method for nonlinear vibration analysis of structures using hybrid mode shapes Ferhatoğlu, Erhan; Özgüven, Hasan Nevzat; Ciğeroğlu, Ender; Department of Mechanical Engineering (2017) In this thesis, a new modal superposition method based on a hybrid mode shape concept is developed for the determination of steady state vibration response of nonlinear structures. The method is developed specifically for systems having nonlinearities where the stiffness of the system may take different limiting values. Stiffness variation of these nonlinear systems enables one to define different linear systems corresponding to each value of the limiting equivalent stiffness. Moreover, the response of the ...
A robust method for scale independent detection of curvature-based criticalities and intersections in line drawings Keles, Hacer Yalim; Tarı, Zehra Sibel (2015-01-01) A novel two-phase iterative method is proposed to identify curvature based criticalities and intersections in line drawings. The method is based on evaluating a field obtained from the image via diffusion using adaptively changing ellipse-shaped analysis windows. The deviation of the average field strength values within the analysis windows from that of an external reference field is used as a metric to evaluate the criticality of a region. The external reference field is computed from an image of a straigh...
A Computerized Method for Delay Risk Assessment Based on Fuzzy Set Theory using MS Project (TM) BUDAYAN, Cenk; Dikmen Toker, İrem; Birgönül, Mustafa Talat; Ghaziani, Aydin (2018-08-01) In this paper, we present a computerized method as an add-in to MS Project (TM) for risk identification and estimation of delay. A delay analysis ontology is incorporated so that the users can identify causes of delay at the activity level and assess frequency and impact of risks using their previous experience, expertise and judgement. Testing and validation findings demonstrate that the software is easy to use and gives reliable results. Decision-makers can use this software during risk identification and...
A finite volume method for compressible viscous flows Tınaztepe, H. Tuğrul; Üçer, Ahmet Ş.; Akmandor, İ. Sinan; Department of Mechanical Engineering (1997)

Citation Formats

E. Yılmaz, “A three dimensional parallel and adaptive Euler flow solver for unstructured grids,” Ph.D. - Doctoral Program, Middle East Technical University, 2000.