Effects of Geometric Modifications on a Complex Multi-Stream Supersonic Rectangular Nozzle

2021 ◽  
Author(s):  
Emma D. Gist ◽  
Seth Kelly ◽  
Tyler Vartabedian ◽  
Rishov Chatterjee ◽  
Parshwanath S. Doshi ◽  
...  
Keyword(s):  
Rectangular Nozzle

Acoustic Measurements of High-Speed Jets from Rectangular Nozzle with Thrust Vectoring

AIAA Journal ◽  
2009 ◽  
Vol 47 (6) ◽  
pp. 1482-1490 ◽  
Author(s):  
Adam E. Goss ◽  
Jérémy Veltin ◽  
Jaehyung Lee ◽  
Dennis K. McLaughlin
Keyword(s):  
High Speed ◽  
Acoustic Measurements ◽  
Thrust Vectoring ◽  
Rectangular Nozzle

Towards large-eddy simulations of supersonic jets from twin rectangular nozzle with plasma actuation

2021 ◽  
Author(s):  
Guillaume A. Brès ◽  
Brandon Yeung ◽  
Oliver T. Schmidt ◽  
Ata Ghassemi Isfahani ◽  
Nathan J. Webb ◽  
...  
Keyword(s):  
Supersonic Jets ◽  
Large Eddy Simulations ◽  
Plasma Actuation ◽  
Rectangular Nozzle ◽  
Large Eddy

scholarly journals Flow and noise from septa nozzles

2018 ◽  
Vol 17 (1-2) ◽  
pp. 36-51 ◽  
Author(s):  
KBMQ Zaman ◽  
JE Bridges
Keyword(s):  
Aspect Ratio ◽  
Numerical Simulations ◽  
Secondary Flow ◽  
Experimental Results ◽  
Streamwise Vortices ◽  
Noise Radiation ◽  
Rectangular Nozzle ◽  
Distributed Propulsion ◽  
Flow Evolution ◽  
Scale Experiment

Flow and noise fields are explored for the concept of distributed propulsion. A model-scale experiment is performed with an 8:1 aspect ratio rectangular nozzle that is divided into six passages by five septa. The septa geometries are created by placing plastic inserts within the nozzle. It is found that the noise radiation from the septa nozzle can be significantly lower than that from the baseline rectangular nozzle. The reduction of noise is inferred to be due to the introduction of streamwise vortices produced by secondary flow within each passage. Thus, the geometry of the internal passages of the septa nozzle can have a large influence. The flow evolution is profoundly affected by slight changes in the geometry. These conclusions are reached by experimental results of the flowfield aided by brief numerical simulations.

G602 Visualization and its quantization on pulsating jet from a rectangular nozzle

2001 ◽  
Vol 2001 (0) ◽  
pp. 226
Author(s):  
Katsushi HATANO ◽  
Takashi YOSHIDA ◽  
Masaharu MATSUBARA ◽  
Toshihiko IKEDA ◽  
Tadanobu NAGASAWA ◽  
...  
Keyword(s):  
Rectangular Nozzle ◽  
Pulsating Jet
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