Investigation of water jet breakup behavior in crossflow with a supersonic air jet

Document Type

Conference Proceeding

Publication Date

1-1-2020

Abstract

In the testing of rocket engines, it becomes very important to protect the testing hardware from damage by the extreme thermal and acoustic loading generated by the high-energy rocket exhaust. To better inform the testing hardware development at NASA's Stennis Space Center in Mississippi a complex multi-phase CFD code has been developed to inform the design of water spray systems used to cool rocket exhaust and mitigate the effects of acoustic loads. To assist in the validation of this computational code, a scaled test facility has been developed at Louisiana State University to examine the behavior of a representative water jet breakup interaction with a supersonic jet of air. A 0.38” diameter air jet of Mach number 2.8 and stagnation pressure of 150 psig interacts with a 0.06” diameter water jet at a pressure between 0-100psig, and non-intrusive diagnostics are used to examine the breakup process and behavior. A laser sheet is used to visualize the breakup of the jet in-plane with both the water and air jets, and the breakup process and stability are analyzed.

Publication Source (Journal or Book title)

ICLASS 2018 - 14th International Conference on Liquid Atomization and Spray Systems

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