Gasdynamic model of turbulent combustion in an explosion

Conference · Wed Aug 31 04:00:00 EDT 1994

OSTI ID:67259

Kuhl, A L ^[1]; Ferguson, R E; Chien, K Y; Collins, J P ^[2]; Oppenheim, A K ^[3]

---

1. Lawrence Livermore National Lab., CA (United States)
2. White Oak Detachment, Silver Spring, MD (United States). Naval Surface Warfare Center
3. Univ. of California, Berkeley, CA (United States)

Proposed here is a gasdynamic model of turbulent combustion in explosions. It is used to investigate turbulent mixing aspects of afterburning found in TNT charges detonated in air. Evolution of the turbulent velocity field was calculated by a high-order Godunov solution of the gasdynamic equations. Adaptive Mesh Refinement (AMR) was used to follow convective-mixing processes on the computational grid. Combustion was then taken into account by a simplified sub-grid model, demonstrating that it was controlled by turbulent mixing. The rate of fuel consumption decayed inversely with time, and was shown to be insensitive to grid resolution.

• Research Organization: Lawrence Livermore National Lab., CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States); Defense Nuclear Agency, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 67259
• Report Number(s): UCRL-JC--118333; CONF-9409331--1; ON: DE95010267; CNN: DNA IACRO-94-830; DNA MIPR-94-563
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
COMBUSTION
DETONATIONS
DYNAMICS
EXPLOSIONS
GAS FLOW
TNT
TURBULENCE
VORTEX FLOW
VORTICES