The dynamics of inertial particles in underexpanded jets: An experimental study

Taehoon Kim, Rui Ni, Jesse Capecelatro, Yuan Yao, Gregory Shallcross, Manish Mehta, Jason Rabinovitch

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


Although the dynamics of heavy inertial particles interacting with complex flow has been studied extensively, most previous works focused on the incompressible flow regime, and the understanding of particle-laden flow in the sonic to supersonic regimes is still limited. Here, we introduce a new particle-laden high-speed jet facility to fill this gap. For this facility, to control both the mass loading and particle slip velocity independently, a particle feeding system consisting of a particle injector and a particle accelerator was included in the jet facility. The information of both phases were obtained using the ultra-high-speed diagnostic systems by leveraging a camera that can operate at 2-10 millions fps. The gas-phase dynamics was acquired using a Schlieren imaging system and the particle phase was measured using a particle shadow tracking method. Measurements of both the particle-free and particle-laden underexpanded jets in the nearfield zone were acquired, and their statistics are discussed. These new results will provide a rich dataset both for studying compressible multiphase flow problems and for validating numerical schemes developed for this regime.

Original languageEnglish
Title of host publicationAIAA Scitech 2020 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
Number of pages10
ISBN (Print)9781624105951
StatePublished - 2020
EventAIAA Scitech Forum, 2020 - Orlando, United States
Duration: Jan 6 2020Jan 10 2020

Publication series

NameAIAA Scitech 2020 Forum
Volume1 PartF


ConferenceAIAA Scitech Forum, 2020
Country/TerritoryUnited States

ASJC Scopus subject areas

  • Aerospace Engineering

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