Development of a wing design tool using euler/navier-stokes flow solver

Ülker, Kıvanç
A three dimensional wing design tool with analysis functions has been developed with embedded Euler/Navier-Stokes flow solver and a three dimensional hyperbolic grid generator. A graphical user interface has been constructed using PYTHON script language and the tool was enhanced with pre-processing and post-processing capabilities. Analysis and design procedures are demonstrated with automatic grid generation, automatic series solution and automatic graphs and reports generation.


Fluid structure coupled analysis of an aerodynamic surface
Sümer, Bülent; Akgün, Mehmet A.; Department of Aerospace Engineering (2004)
In this thesis a 3-D Euler flow solver is coupled with a finite element program in order to solve static aeroelastic problems involving aircraft wings. A loosely coupled solution approach based on an iterative solution procedure is used to solve the coupled field problem. Because of the deformation of the underlying surface over which the flow is solved, Computational Fluid Dynamics mesh has to move at each computational aeroelastic iteration in order to comform to the new shape of the aerodynamic surface. ...
Parallel navier stokes solutions of low aspect ratio rectangular flat wings in compressible flow
Durmuş, Gökhan; Eyi, Sinan; Department of Aeronautical Engineering (2004)
The objective of this thesis is to accomplish the three dimensional parallel thin-layer Navier-Stokes solutions for low aspect ratio rectangular flat wings in compressible flow. Two block parallel Navier Stokes solutions of an aspect ratio 1.0 flat plate with sharp edges are obtained at different Mach numbers and angles of attack. Reynolds numbers are of the order of 1.0E5-3.0E5. Two different grid configurations, the coarse and the fine grids, are applied in order to speed up convergence. In coarse grid co...
Two dimensional finite volume weighted essentially non-oscillatory euler schemes with different flux algorithms
Aktürk, Ali; Akmandor, İbrahim Sinan; Department of Aerospace Engineering (2005)
The purpose of this thesis is to implement Finite Volume Weighted Essentially Non-Oscillatory (FV-WENO) scheme to solution of one and two-dimensional discretised Euler equations with different flux algorithms. The effects of the different fluxes on the solution have been tested and discussed. Beside, the effect of the grid on these fluxes has been investigated. Weighted Essentially Non-Oscillatory (WENO) schemes are high order accurate schemes designed for problems with piecewise smooth solutions that invol...
Evaluation of a new turbulence model for boundary layer flows with pressure gradient
Marangoz, Alp; Çıray, Cahit; Department of Aerospace Engineering (2005)
In this thesis, a new turbulence model developed previously for channel and flat plate flows is evaluated for flat plate flows with pressure gradient. For this purpose a flow solver, which uses boundary layer equations as the governing equations and Von Karman momentum integral equation for the calculation of skin friction, is developed. It is shown that the error of the new turbulence model, in predicting the velocity profile, is less than 5 % for the flat plate flows without pressure gradient and less tha...
Discrete fiber angle and continuous fiber path optimization in composite structures
İnci, Hasan; Kayran, Altan; Department of Aerospace Engineering (2012)
Fiber orientation angle stands out as one of the most effective design variables in the design optimization of composite structures. During the manufacturing of the composite structures, one can change the fiber orientation according to the specific design needs and constraints to optimize a pre-determined performance index. Fiber placement machines can place different width tows in curvilinear paths resulting in continuous change of the fiber orientation angle in a layer of the composite structure. By allo...
Citation Formats
K. Ülker, “Development of a wing design tool using euler/navier-stokes flow solver,” M.S. - Master of Science, Middle East Technical University, 2005.