Optimal design and analysis of airfoil radiator fins based on weakly compressible turbulence

Author(s):  
Chen-Yang Lyu ◽  
Ren-Jun Zhan
1997 ◽  
Vol 9 (10) ◽  
pp. 3037-3057 ◽  
Author(s):  
Robert Rubinstein ◽  
Gordon Erlebacher

2019 ◽  
Vol 27 (4) ◽  
pp. 5670 ◽  
Author(s):  
Edwin Mathews ◽  
Kan Wang ◽  
Meng Wang ◽  
Eric J. Jumper

2001 ◽  
Vol 13 (1) ◽  
pp. 290-310 ◽  
Author(s):  
Jean-Pierre Bertoglio ◽  
Françoise Bataille ◽  
Jean-Denis Marion

2020 ◽  
Vol 501 (1) ◽  
pp. L23-L27
Author(s):  
E Brooker ◽  
T Plewa ◽  
D Fenn

ABSTRACT Our aim in this work is to identify and explain the necessary conditions required for an energetic explosion of a Chandrasekhar-mass white dwarf. We construct and analyse weakly compressible turbulence models with nuclear burning effects for carbon/oxygen plasma at a density expected for the deflagration-to-detonation transition (DDT) to occur. We observe the formation of carbon deflagrations and transient carbon detonations at early times. As turbulence becomes increasingly inhomogeneous, sustained carbon detonations are initiated by the Zel’dovich reactivity gradient mechanism. The fuel is suitably preconditioned by the action of compressive turbulent modes with wavelength comparable to the size of resolved turbulent eddies; no acoustic wave is involved in this process. Oxygen detonations are initiated, aided either by reactivity gradients or by collisions of carbon detonations. The observed evolutionary time-scales are found to be sufficiently short for the above process to occur in the expanding, centrally ignited massive white dwarf. The inhomogeneous conditions produced prior to the DDT might be of consequence for the chemical composition of the outer ejecta regions of Type Ia supernovae from the single degenerate channel, and offer the potential for validation of the proposed model.


Sign in / Sign up

Export Citation Format

Share Document