Computational prediction of NASA langley HYMETS arc jet flow with KATS

Ümran Düzel, Olivia Schroeder, Huaibao Zhang, Alexandre Martin

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

18 Scopus citations

Abstract

Atmospheric entry occurs at very high velocities which makes the physics of the flow complicated to predict. Although high enthalpy flow facilities such as arc jets and plasma wind tunnels are widely used to examine the entry flow conditions, they can involve assumptions which make unrealistic predictions. High-fidelity modeling tools are essential for accurate predictions of the physical phenomena that occur during planetary entry as well as to better interpret ground testing. The Kentucky Aerothermodynamic and Thermal-response System - Fluid Dynamics (KATS-FD) is a research tool developed mainly to predict planetary entry conditions. In order to better understand and interpret the physics of an arc jet flow, KATS-FD is used and compared to a set of experimental data. The latter is provided by NASA Langley Hypersonic Material Environment Testing System (HYMETS) arc jet facility. From the array of experiments a test case was selected which consisted of a 6.5 MJ/kg enthalpy flow that discharged into a vacuum chamber at 0.228 kPa. The simulation parameters are compared to radial and axial velocity profiles measured using Planar Laser Induced Fluorescence (PLIF). Surface pressure and heat flux profiles are analyzed. The species concentration along the centerline is computed and presented. A parametric study of the nozzle wall boundary conditions and variation of bulk enthalpy is carried out in order to better assess the ground testing and numerical results.

Original languageEnglish
Title of host publicationAIAA Aerospace Sciences Meeting
DOIs
StatePublished - 2018
EventAIAA Aerospace Sciences Meeting, 2018 - Kissimmee, United States
Duration: Jan 8 2018Jan 12 2018

Publication series

NameAIAA Aerospace Sciences Meeting, 2018

Conference

ConferenceAIAA Aerospace Sciences Meeting, 2018
Country/TerritoryUnited States
CityKissimmee
Period1/8/181/12/18

Bibliographical note

Publisher Copyright:
© 2018 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.

ASJC Scopus subject areas

  • Aerospace Engineering

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