Work

The role of free-stream turbulence on high pressure turbine aero-thermal stage interaction

Year: 2017

Type: dissertation

Abstract: Turbulence plays an important role on the aero-thermal performance of modern aircraft engine High Pressure Turbines (HPT). The role of the vane wake and passage turbulence on the downstream blade flow field is an important consideration for both performance and durability. Obtaining measurements to fully characterize the flow field can be challenging and costly in an experimental facility. Advances in computational Fluid Dynamic (CFD) modeling and High Performance Computing (HPC) are providing opportunity to close these measurement gaps. In order for CFD to be adopted, methods need to be both accurate and efficient. Meshing approaches must also be able to resolve complex HPT geometry while maintaining quality adequate for scale-resolved simulations. Therefore, the accuracy of executing scale-resolved simulations with a second-order code on a mesh of prisms and tetrahedrals in Fluent is considered.

DOI: 10.17760/d20251494

Author: James Earl Kopriva

Institution: Northeastern University

Language: English

Topic: Turbomachinery Performance and Optimization

Subfield: Aerospace Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: gold

Funders: National Science Foundation, National Centre for Supercomputing Applications

Awards: G1092154682, G2952167421, Sustained-Petascale In Action: Blue Waters Enabling Transformative Science And Engineering