CFD Analysis of Mesh Refinement and Accuracy for Compressor Stator Blade Simulation

This project, part of the EMS602U module, explores how mesh refinement and order of accuracy influence the simulation of inviscid flow over a two-dimensional profile of a compressor stator blade. STAR CCM+ was employed for this CFD study, with results focused on identifying the optimal mesh and accuracy order for predicting static and total pressure coefficients, as well as force coefficients.

Project Overview:

• Simulation Model: This simulation modeled a single compressor stator blade profile, utilizing the symmetry of blade placement in the compressor. The two-dimensional approach allowed for efficient extrapolation to the full compressor design.

• Mesh Refinement and Accuracy: Various mesh refinements and accuracy orders were tested, with results indicating that a fine, second-order mesh provided the closest match to theoretical pressure and force coefficients. The refined mesh produced smoother, more stable simulations with lower error margins.

• Optimization Findings: The study highlighted that localized mesh refinement could yield similarly accurate results with lower computational demands, optimizing the simulation’s efficiency.

For more details, refer to the full report here.

Visuals:

Figure 1: Velocity Magnitude Contour Plot

Figure 2: Mesh Around the Leading Edge of the Second Order

Figure 3: Mesh Error Comparison

Learning Outcomes:

This project enhanced my understanding of CFD, particularly in evaluating mesh quality, accuracy order, and resource-efficient simulation practices within STAR CCM+.

Key Skills: CFD, Mesh Optimization, Flow Simulation, STAR CCM+, Analytical Problem Solving.