Simulation of surface instabilities in liquefying hybrid rocket fuels

Isaac M. Knol, Brian A. Maicke

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

1 Scopus citations

Abstract

In this study, computational fluid dynamics simulations are used to investigate the formation and entrainment of liquid fuel droplets in hybrid rockets. A liquid paraffin wax, starting at rest, is subjected to a shear force caused by a gas moving with an initial velocity with a sinusoidal inference between the two fluids. Particular attention is paid to the creation of the entrained droplets and the amplitude and frequency of the waves created in the liquid fluid. It is found that increasing operating pressure and gas-phase velocity lead to an increase in droplet formation and entrainment. Increasing amplitude has a minor effect on entrainment, but the effect seems to vanish underneath a certain amplitude threshold.

Original languageEnglish (US)
Title of host publicationAIAA Propulsion and Energy Forum and Exposition, 2019
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105906
DOIs
StatePublished - 2019
EventAIAA Propulsion and Energy Forum and Exposition, 2019 - Indianapolis, United States
Duration: Aug 19 2019Aug 22 2019

Publication series

NameAIAA Propulsion and Energy Forum and Exposition, 2019

Conference

ConferenceAIAA Propulsion and Energy Forum and Exposition, 2019
CountryUnited States
CityIndianapolis
Period8/19/198/22/19

All Science Journal Classification (ASJC) codes

  • Energy(all)
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Control and Systems Engineering
  • Mechanical Engineering

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  • Cite this

    Knol, I. M., & Maicke, B. A. (2019). Simulation of surface instabilities in liquefying hybrid rocket fuels. In AIAA Propulsion and Energy Forum and Exposition, 2019 (AIAA Propulsion and Energy Forum and Exposition, 2019). American Institute of Aeronautics and Astronautics Inc, AIAA. https://doi.org/10.2514/6.2019-3919