Direct Numerical Simulation of Wave Packets in Hypersonic Compression-Corner Flow

AIAA Journal ◽  
2016 ◽  
Vol 54 (7) ◽  
pp. 2034-2050 ◽  
Author(s):  
Andrey Novikov ◽  
Ivan Egorov ◽  
Alexander Fedorov
Keyword(s):  
Numerical Simulation ◽  
Direct Numerical Simulation ◽  
Wave Packets ◽  
Compression Corner ◽  
Corner Flow

DIRECT NUMERICAL SIMULATION OF WAVE PACKETS OVER A ROUGH FLAT PLATE

2019 ◽  
Author(s):  
Fernando H T Himeno ◽  
Marlon Sproesser Mathias ◽  
marcello medeiros
Keyword(s):  
Numerical Simulation ◽  
Direct Numerical Simulation ◽  
Flat Plate ◽  
Wave Packets

scholarly journals Direct numerical simulation of supersonic turbulent flows around a tandem expansion-compression corner

2015 ◽  
Vol 27 (12) ◽  
pp. 125104 ◽  
Author(s):  
Jian Fang ◽  
Yufeng Yao ◽  
Alexandr A. Zheltovodov ◽  
Zhaorui Li ◽  
Lipeng Lu
Keyword(s):  
Numerical Simulation ◽  
Direct Numerical Simulation ◽  
Turbulent Flows ◽  
Compression Corner

Direct numerical simulation of turbulence in a square annular duct

2009 ◽  
Vol 621 ◽  
pp. 23-57 ◽  
Author(s):  
HONGYI XU
Keyword(s):  
Numerical Simulation ◽  
Direct Numerical Simulation ◽  
Secondary Flows ◽  
Turbulence Energy ◽  
Fully Developed Turbulence ◽  
Developed Turbulence ◽  
Corner Flow ◽  
Annular Duct ◽  
The Mean ◽  
Flow Similarity

Direct numerical simulation (DNS) is performed to investigate the fully developed turbulence in a straight square annular duct. The mean flow field and the turbulent statistics are compared with existing experiments and numerical results. The comparisons and the analysis of the DNS data led to the discovery of the turbulent boundary layers of concave and convex 90° corners, a corner flow similarity and the scaling characteristics of corner turbulence. Analysis of the mean streamwise velocity near the concave and convex 90° corners resulted in establishing the ‘law-of-the-corner’ formulations. Comparing these formulations with the ‘law-of-the-wall’ relation, both damping and enhancing mechanisms analytically represented by the van Driest damping function, and the enhancement function were revealed for the concave and convex corner turbulence. The investigation captures the distinctive turbulence-driven secondary flows for both convex and concave 90° corners, and a corner flow similarity rule is discovered, which is associated with the pattern of these secondary flows. A turbulence energy spectrum analysis provides the distinctive features of the fully developed turbulence in the wall and corner regions. The validity of the turbulence eddy viscosity concept is evaluated based on these turbulence energy spectra. The turbulence-driven secondary-flow generation mechanisms are investigated by analysing the anisotropy of the Reynolds stresses.

scholarly journals Direct numerical simulation of a supersonic compression corner

2020 ◽  
Vol 1509 ◽  
pp. 012021
Author(s):  
Zhengyuan Wu ◽  
Zhenxun Gao ◽  
Chongwen Jiang ◽  
Chunhian Lee
Keyword(s):  
Numerical Simulation ◽  
Direct Numerical Simulation ◽  
Compression Corner
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