Computational Analysis of Laminar Steady Hypersonic Flow past Blottner Sphere Using ANSYS Fluent

Aidan R. Murphy, Ramesh K. Agarwal

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Hypersonic flow past the Blottner Sphere is a benchmark test case recently proposed for verification and validation of CFD codes in the High-Fidelity CFD Workshop organized in 2022 by NASA Langley Research Center in association with AIAA. Investigations into Blottner Sphere date back to the early 1960s and it has continued to be a problem of great interest in the field of high-speed computational and experimental fluid dynamics. This paper focuses on the computation of steady laminar hypersonic flow past the Blottner Sphere using the three-dimensional compressible Navier-Stokes equations with suitable boundary conditions in ANSYS Fluent. Results are obtained on 5 provided structured meshes for surface heating and pressure on the sphere at Mach 5.0 freestream. The simulation results correctly predict the separated bow shock upstream of the sphere along with the shock detachment distance from the stagnation point. The computed normalized pressure and heat flux on the surface are compared with the results obtained by 2022 High-Fidelity CFD Workshop participants. The surface pressure results are well within 5% of the workshop participants as well as NS3D numerical predictions completed by Blottner in 1990. Additional results are presented for skin friction coefficient profiles for future investigations into this benchmark case.

Original languageEnglish
Title of host publicationAIAA Aviation and Aeronautics Forum and Exposition, AIAA AVIATION Forum 2023
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624107047
DOIs
StatePublished - 2023
EventAIAA Aviation and Aeronautics Forum and Exposition, AIAA AVIATION Forum 2023 - San Diego, United States
Duration: Jun 12 2023Jun 16 2023

Publication series

NameAIAA Aviation and Aeronautics Forum and Exposition, AIAA AVIATION Forum 2023

Conference

ConferenceAIAA Aviation and Aeronautics Forum and Exposition, AIAA AVIATION Forum 2023
Country/TerritoryUnited States
CitySan Diego
Period06/12/2306/16/23

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