Effect of injector variation on the bidirectional vortex

Brian A. Maicke, Gerardo Talamantes

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

5 Scopus citations


The primary goal of this work is to assess the sensitivity of the bidirectional vortex to changes in injection conditions. To achieve this goal, a parametric model is developed to capture the effect of variations in number of injectors, injector size, injection velocity, and injection location. The resulting cold-flow model is simulated using OpenFOAM, an open source platform for the solution of fluid dynamics problems. The accuracy of the solver is validated through comparisons to existing analytical models. After the validation is complete, simulations are run to examine the response of the vortex to changes in the injector design. The resulting axial and velocity profiles are be compared to evaluate the sensitivity of the vortex structure to the injection conditions. It is found that increasing mass flow rate by way of injector number, injector size, and injection velocity all have an amplifying effect on the peak velocities in all directions. Changes in the injection height have a nominal effect on the swirl and radial velocities, but a more significant impact on the axial velocity.

Original languageEnglish (US)
Title of host publication52nd AIAA/SAE/ASEE Joint Propulsion Conference, 2016
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624104060
StatePublished - 2016
Event52nd AIAA/SAE/ASEE Joint Propulsion Conference, 2016 - Salt Lake City, United States
Duration: Jul 25 2016Jul 27 2016

Publication series

Name52nd AIAA/SAE/ASEE Joint Propulsion Conference, 2016


Other52nd AIAA/SAE/ASEE Joint Propulsion Conference, 2016
Country/TerritoryUnited States
CitySalt Lake City

All Science Journal Classification (ASJC) codes

  • Engineering(all)


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