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Master Thesis Report Research Goals and Objectives 3|Research Goals and Objectives This chapter will look into the research objective, goals, motivation and scope of the thesis. 3.1 Research Question and Objective The main research question of this thesis is as follows: • How does Boundary Layer Ingestion influences the performance of an engine fan/compressor blade such as the NASA Rotor 67. • Which fluid dynamics phenomena are different as compared to the uniform inlet flow? The objective of this thesis is therefore "to conduct a thorough analysis of the flow field of a representative 3D Rotor (such as the NASA Rotor 67) under both uniform and non uniform inflow conditions using Computational Fluid Dynamics (CFD) tool (e.g SU2 and ANSYS CFX). In order to achieve this objective, a number of preliminary goals has to be accomplished: • To parameterize and reconstruct the rotor blade • To model both uniform and non uniform boundary conditions in ANSYS CFX. • To analyse the rotor performance and flow physics under both BLI and non BLI boundary conditions In order to achieve the aforementioned goals, there is a number of sub-goals to be achieved: • To extract the original blade geometry from the given CGNS mesh file • To obtain CFD results from the Aerodynamic Interface Plane (AIP) of the provided inlet duct geometry and compare them with its inlet condition • To develop a geometry fitting algorithm to fit all the NASA Rotor 67 2D profiles with BSpline curves. • To reconstruct the 3D blade using BSpline surfaces • To construct meshes of both the 2D and 3D geometries using SALOME, UMG2 and UMG3 • To obtain the appropriate 2D and 3D boundary conditions for the simulations • To perform CFD simulation and analysis on the 2D/3D geometries In addition to these sub-goals, CFD related questions such as the required size of the domain , optimal solver settings for the time and spatial integration scheme as well as mesh quality should be addressed. 26PDF Image | Aerodynamic Design of the NASA Rotor 67 for Non Uniform Inflow
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