scholarly journals Numerical Simulation of Mixing Enhancement in Scramjet using Micro Vortex Generator

2012 ◽  
Vol 38 ◽  
pp. 3969-3976 ◽  
Author(s):  
G. Saravanan ◽  
C. Suresh
Keyword(s):  
Numerical Simulation ◽  
Vortex Generator ◽  
Mixing Enhancement ◽  
Micro Vortex Generator

Mixing enhancement and penetration improvement induced by pulsed gaseous jet and a vortex generator in supersonic flows

2017 ◽  
Vol 42 (30) ◽  
pp. 19318-19330 ◽  
Author(s):  
Lang-quan Li ◽  
Wei Huang ◽  
Li Yan ◽  
Zhen-tao Zhao ◽  
Lei Liao
Keyword(s):  
Vortex Generator ◽  
Supersonic Flows ◽  
Mixing Enhancement

Micro vortex generator control of axisymmetric high-speed laminar boundary layer separation

Shock Waves ◽  
2014 ◽  
Vol 25 (5) ◽  
pp. 521-533 ◽  
Author(s):  
D. Estruch-Samper ◽  
L. Vanstone ◽  
R. Hillier ◽  
B. Ganapathisubramani
Keyword(s):  
Boundary Layer ◽  
Laminar Boundary Layer ◽  
High Speed ◽  
Vortex Generator ◽  
Boundary Layer Separation ◽  
Layer Separation ◽  
Micro Vortex Generator

Thermal mixing enhancement of liquid metal MHD free-surface flow by optimizing vortex generator arrays

2018 ◽  
Vol 136 ◽  
pp. 223-227 ◽  
Author(s):  
Koji Kusumi ◽  
Tomoaki Kunugi ◽  
Takehiko Yokomine ◽  
Zensaku Kawara ◽  
Shoki Nakamura ◽  
...  
Keyword(s):  
Free Surface ◽  
Liquid Metal ◽  
Vortex Generator ◽  
Free Surface Flow ◽  
Surface Flow ◽  
Mixing Enhancement ◽  
Thermal Mixing

Effect of Vortex Street on Mixing Enhancement in a Mixing Layer

2015 ◽  
Author(s):  
DongMing Zhang
Keyword(s):  
Numerical Simulation ◽  
Large Scale ◽  
Mixing Layer ◽  
Splitter Plate ◽  
Vortex Street ◽  
Good Effect ◽  
Mixing Enhancement ◽  
Square Cylinder ◽  
Velocity Difference ◽  
Initial Stage

In this paper, the effect of vortex street on increasing mixing in a mixing layer is investigated numerically. The end of the splitter plate is made into square cylinder shape in order to set a square cylinder in the mixing layer for generating the vortex street. The vortex street is formed behind the cylinder in the initial stage of the mixing layer when the top and bottom streams flow over the square cylinder. The large scale vortices in the vortex street are utilized to enhance mixing of two different-speed streams in the mixing layer. The reason of the asymmetry of the vortex street is explained. The case of a mixing layer between two walls is also studied numerically. The results of numerical simulation show that small velocity difference between two streams is good for mixing enhancement in the confined mixing layer. The vortex street has a good effect on mixing enhancement in a mixing layer.

Impact of a Combination of Micro-Vortex Generator and Boundary Layer Suction on Performance in a High-Load Compressor Cascade

2018 ◽  
Author(s):  
Shan Ma ◽  
Wuli Chu ◽  
Haoguang Zhang ◽  
Chuanle Liu
Keyword(s):  
Boundary Layer ◽  
Pressure Loss ◽  
Total Pressure ◽  
Vortex Generator ◽  
Aerodynamic Performance ◽  
Total Pressure Loss ◽  
Control Methods ◽  
Compressor Cascade ◽  
Boundary Layer Suction ◽  
Micro Vortex Generator

The performance of a compressor cascade is considerably influenced by flow control methods. In this paper, the synergistic effects of combination between micro-vortex generators (MVG) and boundary layer suction (BLS) are discussed in a high-load compressor cascade. Seven cases, which are grouped by a kind of micro-vortex generator and boundary layer suction with three locations, are investigated to control secondary flow effects and enhance the aerodynamic performance of the compressor cascade. The MVG is mounted on the end-wall in front of the passage. The rectangle suction slot with three radial positions is installed on the blade suction surface near the trailing edge. The numerical results show that: at the design condition, the total pressure loss is effectively decreased as well as the static pressure coefficient increase when the combined MVG and SBL method (COM) is used, which is superior to MVG in an aerodynamic performance. At the stall condition, the induced vortex coming from MVG could mix the low-energy fluid and mainstream, which result in the reduced separation, and the total pressure loss decreased by 11.54% when the suction flow ratio is 1.5%. The total pressure loss decreases by 14.59% when the COM control methods are applied.

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