Navier-Stokes analysis of muzzle-blast-type waves
A Navier-Stokes solution is presented as a mathematical model to muzzle-blast-type waves. The study has two novel features. First, it is a combined internal/external analysis relating barrel flow parameters to muzzle environment parameters. Second, the dissipative and dispersive effects of viscosity on the propagation phenomenon are captured. The investigation also serves as a numerical analysis of axisymmetric, high-pressure waves in an unsteady, viscous flow. Conservation-form Navier-Stokes equations are integrated by a two-step, explicit finite-difference scheme. The shocks are captured and treated by the inclusion of artificial dissipative terms. Turbulence is accounted for by an algebraic eddy-viscosity model. The internal flow is solved by a predictor-corrector method of characteristics with the shock fitted in; its results compare very well with the experimental data available. The numerical results obtained simulate the muzzle blast waves and show the effects of viscosity. Comparison with the classical spherical blast wave theory shows the deviation in propagation patterns of the axisymmetric and spherical waves. 21 references.
- Research Organization:
- Old Dominion Univ., Norfolk, VA
- OSTI ID:
- 5321010
- Journal Information:
- AIAA J.; (United States), Vol. 24
- Country of Publication:
- United States
- Language:
- English
Similar Records
Composite models for combined rod and fluid dynamics in sucker-rod pumping well systems
Prediction of viscous ship roll damping by unsteady Navier-Stokes techniques
Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
SHOCK WAVES
NUMERICAL ANALYSIS
EXPLOSIVE FRACTURING
MATHEMATICAL MODELS
NAVIER-STOKES EQUATIONS
UNSTEADY FLOW
VISCOUS FLOW
COMMINUTION
DIFFERENTIAL EQUATIONS
EQUATIONS
FLUID FLOW
FRACTURING
MATHEMATICS
PARTIAL DIFFERENTIAL EQUATIONS
640410* - Fluid Physics- General Fluid Dynamics