Numerical model of jet impingement and particle trajectories in extraterrestrial landing events using an euler-lagrange method

Tadd R. Yeager, Douglas H. Fontes, Philip Metzger, Michael P. Kinzel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

This paper presents a numerical model and simulations of a jet flow expelled into a low-pressure environment and impinging on a smooth wall. The model is used to understand the trajectory of regolith ejecta using an Euler-Lagrangian multiphase method, where the gas flow is solved as a continuous phase and Lagrangian particle tracking is used for the regolith phase. The flow is consistent with conditions expected on the martian surface where the continuum assumption is valid, where the Eulerian phase is solved using the Navier Stokes equations and the Lagrangian phase equations of motion are solved directly from the forces experienced by each particle. The flow is solved for a 30 degree wedge representing a portion of an impinging jet flow, such that the 3D effects can be analyzed at reduced computational cost. Using these results, the velocity of the particle phase was extracted to estimate the potential destructive impact of regolith ejecta in the context of landing in continuum conditions.

Original languageEnglish (US)
Title of host publicationAIAA Scitech 2020 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105951
DOIs
StatePublished - 2020
EventAIAA Scitech Forum, 2020 - Orlando, United States
Duration: Jan 6 2020Jan 10 2020

Publication series

NameAIAA Scitech 2020 Forum
Volume1 PartF

Conference

ConferenceAIAA Scitech Forum, 2020
CountryUnited States
CityOrlando
Period1/6/201/10/20

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering

Fingerprint Dive into the research topics of 'Numerical model of jet impingement and particle trajectories in extraterrestrial landing events using an euler-lagrange method'. Together they form a unique fingerprint.

Cite this