Development of a two-dimensional euler solver for unstructured grids

Sezal, İsmail Hakkı


Development of a multigrid accelerated euler solver on adaptively refined two- and three-dimensional cartesian grids
Çakmak, Mehtap; Aksel, Mehmet Haluk; Department of Mechanical Engineering (2009)
Cartesian grids offer a valuable option to simulate aerodynamic flows around complex geometries such as multi-element airfoils, aircrafts, and rockets. Therefore, an adaptively-refined Cartesian grid generator and Euler solver are developed. For the mesh generation part of the algorithm, dynamic data structures are used to determine connectivity information between cells and uniform mesh is created in the domain. Marching squares and cubes algorithms are used to form interfaces of cut and split cells. Geome...
Development of a two-dimensional Navier-Stokes solver for laminar flows using cartesian grids
Şahin, Mehmet Serkan; Aksel, Mehmet Haluk; Department of Mechanical Engineering (2011)
A fully automated Cartesian/Quad grid generator and laminar flow solver have been developed for external flows by using C++. After defining the input geometry by nodal points, adaptively refined Cartesian grids are generated automatically. Quadtree data structure is used in order to connect the Cartesian cells to each other. In order to simulate viscous flows, body-fitted quad cells can be generated optionally. Connectivity is provided by cut and split cells such that the intersection points of Cartesian ce...
Development of a Navier-Stokes solver for multi-block applications
Erdoğan, Erinç; Aksel, Mehmet Haluk; Department of Mechanical Engineering (2004)
A computer code is developed using finite volume technique for solving steady twodimensional and axisymmetric compressible Euler and Navier-Stokes equations for internal flows by أmulti-blockؤ technique. For viscous flows, both laminar and turbulent flow properties can be used. Explicit one step second order accurate Lax-Wendroff scheme is used for time integration. Inviscid solutions are verified by comparing the results of test cases of a support project which was supported by ONERA/France for Turkey T-10...
Development of a laminar Navier-Stokes solver for incompressible flows using structured grids
Akın, Ayhan; Aksel, Mehmet Haluk; Department of Mechanical Engineering (2006)
A method to solve the Navier-Stokes equations for incompressible viscous flows is proposed. This method is SIMPLE (Semi-Implicit Method for Pressure Linked Equations) algorithm to iteratively solve the two-dimensional laminar steady momentum equations and based upon finite volume method on staggered grids. Numerical tests are performed on several cases of the flow in the lid-driven cavity, as well as of the flow after a backward-facing step with SIMPLE and SIMPLER (SIMPLE Revised) methods. Finally, results ...
Development of a quadtree based agglomeration method for a multigrid viscous flow solver on unstructured grids
Mahmutyazicioglu, Emel; Tuncer, İsmail Hakkı; Aksel, Haluk (null; 2010-12-13)
In this study, a new cell agglomeration technique is developed and applied to 1st and 2nd order inviscid/viscous multigrid flow solutions on unstructured/hybrid grids. The grid coarsening required by the multigrid scheme is achieved by agglomerating the unstructured/hybrid cells based on their distribution on a quadtree data structure. The paper presents the coarsening strategy and the multigrid adaptation on inviscid/viscous 2D solutions over a NACA 0012 airfoil section. It is shown that, the quadtree base...
Citation Formats
İ. H. Sezal, “Development of a two-dimensional euler solver for unstructured grids,” Middle East Technical University, 2001.