Linear and Nonlinear Development of the M=0 Instability in z-pinch Equilibria with Axial Sheared Flows

2007 ◽  
Author(s):  
Ioana Paraschiv ◽  
Bruno S. Bauer ◽  
Irvin R. Lindemuth ◽  
Vladimir I. Sotnikov ◽  
Vlad Makhin ◽  
...  
Keyword(s):  
Nonlinear Development ◽  
Sheared Flows ◽  
Linear And Nonlinear ◽  
Z Pinch

Linear and Nonlinear Development of the m = 0 Instability in Z-Pinch Equilibria with Axial Sheared Flows

2008 ◽  
Vol 28 (2) ◽  
pp. 195-199
Author(s):  
Ioana Paraschiv ◽  
Bruno S. Bauer ◽  
Irvin R. Lindemuth ◽  
Volodymyr Makhin
Keyword(s):  
Nonlinear Development ◽  
Sheared Flows ◽  
Linear And Nonlinear ◽  
Z Pinch

Linear and nonlinear development of m=0 instability in a diffuse Bennett Z-pinch equilibrium with sheared axial flow

2010 ◽  
Vol 17 (7) ◽  
pp. 072107 ◽  
Author(s):  
I. Paraschiv ◽  
B. S. Bauer ◽  
I. R. Lindemuth ◽  
V. Makhin
Keyword(s):  
Axial Flow ◽  
Nonlinear Development ◽  
Linear And Nonlinear ◽  
Z Pinch

On the linear and nonlinear development of Görtler vortices

2008 ◽  
Vol 20 (9) ◽  
pp. 094103 ◽  
Author(s):  
Tandiono ◽  
S. H. Winoto ◽  
D. A. Shah
Keyword(s):  
Nonlinear Development ◽  
Görtler Vortices ◽  
Linear And Nonlinear ◽  
Gortler Vortices

Breakdown mechanisms and heat transfer overshoot in hypersonic zero pressure gradient boundary layers

2013 ◽  
Vol 730 ◽  
pp. 491-532 ◽  
Author(s):  
Kenneth J. Franko ◽  
Sanjiva K. Lele
Keyword(s):  
Heat Transfer ◽  
Turbulent Flow ◽  
Plate Boundary ◽  
Transitional Region ◽  
Mean Flow ◽  
Fundamental Resonance ◽  
Nonlinear Development ◽  
Second Mode ◽  
Linear And Nonlinear ◽  
Streamwise Streaks

AbstractA laminar Mach 6 flat plate boundary layer is perturbed using three different types of disturbances introduced through blowing and suction. The linear and nonlinear development and eventual breakdown to turbulence are investigated using direct numerical simulation. The three different transition mechanisms compared are first mode oblique breakdown, second mode oblique breakdown and second mode fundamental resonance. The focus of the present work is to compare the nonlinear development and breakdown to turbulence for the different transition mechanisms and explain the heat transfer overshoot observed in experiments. First mode oblique breakdown leads to the shortest transition length and a clear peak in wall heat transfer in the transitional region. For all three transition mechanisms, the development of streamwise streaks precedes the breakdown to fully turbulent flow. The modal linear and nonlinear development are analysed including the breakdown of the streaks. The effect of wall cooling is investigated for second mode fundamental resonance and no qualitative differences in the nonlinear processes are observed. Finally, the development towards fully turbulent flow including mean flow, turbulent spectra, and turbulent fluctuations is shown and the first mode oblique breakdown simulation shows the furthest development towards a fully turbulent flow.

scholarly journals Linear and nonlinear evolution of azimuthal clumping instabilities in a Z-pinch wire array

2007 ◽  
Vol 14 (1) ◽  
pp. 012706 ◽  
Author(s):  
Wilkin Tang ◽  
T. S. Strickler ◽  
Y. Y. Lau ◽  
R. M. Gilgenbach ◽  
Jacob Zier ◽  
...  
Keyword(s):  
Nonlinear Evolution ◽  
Wire Array ◽  
Linear And Nonlinear ◽  
Z Pinch
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