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Master Thesis Report Development of Salome 2D & 3D Meshing template and Grid Generator Basically, a good quality 2D mesh should comprise of finer discretization within circular zone 1 and 2. This will enable the constructed mesh to produce a good curvature around the leading and trailing edge zone. Secondly, the growth rate of the unstructured mesh within the circular zone should ensure a smooth transition between the finer discretised mesh within the circular zone and the external domain. Thirdly, a reasonably thick and sufficiently discretized boundary layer should be present around the entire blade wall. Lastly, the projection 1D-2D algorithm is used to produce a periodic boundary condition between the upper and lower edges of the simulation domain. An illustration of the 2D mesh developed in Salome which fulfils this criteria is presented in figure 6.2, 6.3, 6.4 and 6.5. Figure 6.2: 2D Mesh Generated by Salome Figure 6.3: Leading edge zoom on Salome 2D MeshFigure 6.4: Trailing edge zoom on Salome 2D Mesh Figure 6.5: Boundary Layer zoom on Salome 2D Mesh Firstly, the geometry is exported into Salome as a ’step’ or ’igs’ file. Thereafter, the geometry is subdivided into edges for which they are used to identify the inflow outflow, periodic 1, periodic 2 and the blade wall of the meshing domain. This is a prior step to be taken for the construction of SU2 based mesh. The development of this meshing template involves the use of Netgen 1D-2D meshing algorithm. The growth rate of the mesh is controlled through the fineness ratio, a setting adjustable by the user in the meshing template. In addition, the user is able to control both the minimum and maximum allowable discretization of the mesh. The viscous layer option in SALOME enable the users to control the total thickness, number of layer as well as the stretch factor of the 64PDF Image | Aerodynamic Design of the NASA Rotor 67 for Non Uniform Inflow
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