UROP Project Listing System
Project Title:
Helical modes in a hydrodynamically self-excited jet
Supervisor:LI Larry
Project Description:Low-density jets are a canonical model of a hydrodynamic oscillator. They are known to exhibit global instability in the form of self-excited axisymmetric oscillations, but are not generally known to support self-excited helical oscillations. In fact, the existence of helical modes in such jets has been predicted only a few times before (e.g. in the local linear spatiotemporal stability analysis of Coenen, Sevilla, and Sanchez [Physics of Fluids (20) 2008]) but helical modes have yet to be detected in real-world experiments. In this project, you will perform laboratory experiments to search for the existence of helical modes in low-density jets, potentially opening up new pathways through which such global hydrodynamic instabilities can be used in industrial and environmental applications such as aircraft engines and pollutant dispersion.
Course type:UROP1000 UROP1100 UROP2100 UROP3100 UROP4100 
Applicant's Roles:Please see project description. 
Applicant's Learning Objectives:Please see project description. 
Complexity of the project:Moderate 

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