Analysis of acoustic radiation from instability waves within an off-design supersonic jet flow using combined theory and large-eddy simulation

2020 ◽  
Vol 148 (4) ◽  
pp. 2616-2616
Author(s):  
Jianhui Cheng ◽  
James D Goldschmidt ◽  
Weiqi Shen ◽  
Ukeiley Lawrence ◽  
Steven A. Miller
Keyword(s):  
Large Eddy Simulation ◽  
Acoustic Radiation ◽  
Supersonic Jet ◽  
Jet Flow ◽  
Instability Waves ◽  
Eddy Simulation ◽  
Large Eddy

Validation of a High-Order Large Eddy Simulation Solver for Acoustic Prediction of Supersonic Jet Flow

2020 ◽  
Vol 28 (03) ◽  
pp. 1950023
Author(s):  
Weiqi Shen ◽  
Steven A. E. Miller
Keyword(s):  
Large Eddy Simulation ◽  
Large Scale ◽  
Acoustic Radiation ◽  
Supersonic Jet ◽  
High Order ◽  
High Order Accuracy ◽  
Order Of Accuracy ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Mixing Noise

A high-order large eddy simulation (LES) code based on the flux reconstruction (FR) scheme is further developed for supersonic jet simulation. The FR scheme provides an efficient and easy-to-implement way to achieve high-order accuracy on an unstructured mesh. The order of accuracy and the shock capturing capability of the solver are validated with the isentropic Euler vortex and Sod’s shock tube problem. A heated under-expanded supersonic jet case from NASA’s Small Hot Jet Acoustic Rig (SHJAR) database is used for validation. The turbulence statistics along the nozzle centerline and lip-line are examined. We predict the acoustic radiation with the Ffowcs Williams and Hawkings method, which is integrated with our solver. The far-field acoustic predictions show reasonable agreement with the experimental measurement in the upstream and downstream directions, where the shock-associated noise and the large-scale turbulent mixing noise are dominant, respectively.

Numerical Investigation of 3-D Supersonic Jet Flows Using Large-Eddy Simulation

2012 ◽  
Vol 11 (7-8) ◽  
pp. 783-812 ◽  
Author(s):  
S.-C. Lo ◽  
K. M. Aikens ◽  
G. A. Blaisdell ◽  
A. S. Lyrintzis
Keyword(s):  
Large Eddy Simulation ◽  
Numerical Investigation ◽  
Supersonic Jet ◽  
Jet Flows ◽  
Eddy Simulation ◽  
Large Eddy

scholarly journals Large Eddy Simulation of isothermal cruciform jet flow: Preliminary results

2016 ◽  
Vol 8 ◽  
pp. 10-12 ◽  
Author(s):  
B.T. Kannan ◽  
P. Ssheshan ◽  
Sundararaj Senthilkumar
Keyword(s):  
Large Eddy Simulation ◽  
Jet Flow ◽  
Preliminary Results ◽  
Eddy Simulation ◽  
Large Eddy
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