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Master Thesis Report Literature Review with an adjoint solver that computes the gradient of the response. Solutions from the adjoint solver are then used to compute the functional driven mesh adaptation techniques [13]. In SU2, both the continuous and discrete adjoint equations have been implemented. In the continuous approach, the adjoint equations are derived from the governing partial differential equation and then subsequently discretized. Wheras in the discrete approach, the adjoint equations are directly derived from the discretized governing equation[13]. The SU2 suite is composed of several analysis modules as described below [13]: • SU2 CFD: The main Partial Differential Equation solution module, which is primarily an Euler or Reynolds Navier Stoke Solver, also includes the adjoint equations for many of the supported governing equation system. • SU2 DDC: The Domain Decomposition Code is used for computation which involves multiple processors. The specified volumetric grid is partitioned for use with several other core tools in parallel. • SU2 MAC: The Mesh Adaptation Code is used to refine unstructured computational meshes so as to improve the accuracy of the predictions. Based on the analysis of converged flow, adjoint or linearized solution, grid adaptation is applied to strategically refine the mesh about the key flow features. • SU2 GPC: The Gradient Projection Code is used in the calculation of sensitivities for the purpose of optimization and uncertainty quantification. It uses the surface sensitivities computed using SU2 CFD, the flow solution and the definition of the geometric design variable to evaluate the derivative of a particular function. • SU2 MDC: The Mesh Deformation Code is used to perturb an existing unstructured volume mesh to a new surface geometry. It computes the geometric deformation of a surface within the computation mesh and the surrounding volumetric grid. • SU2 PBC: The Periodic Boundary Code is used for the solutions of PDE with periodic bound- ary condition. A new mesh containing the proper communication structure between the periodic faces is generated. • SU2 SMC: The Sliding Mesh Code enables solution on meshes that slide past each other. Ghost cells in the computation domain are created for performing simulations with sliding surfaces. A new multi zone mesh containing the proper communication structure between the sliding interfaces is generated. SU2 is composed of several groups of python scripts which enable the coupling of the various modules for performing complex activities including design optimization and adaptive grid refinement. • High Fidelity Analysis Script: These scripts are designed to enhance the flexibility of the SU2 framework. They simplify the execution of parallel tasks, grid adaptation or the interface with other softwares. • Optimal Shape Design Script: These scripts are designed to automate the shape design process • Automatic Differentiation Script: These scripts are designed to create differentiated versions of the code section in SU2. 24PDF Image | Aerodynamic Design of the NASA Rotor 67 for Non Uniform Inflow
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