منابع مشابه
Formulations of Artificial Viscosity for Multi-dimensional Shock Wave Computations
In this paper we present a new formulation of the artificial viscosity concept. Physical arguments for the origins of this term are given and a set of criteria that any proper functional form of the artificial viscosity should satisfy is enumerated. The first important property is that by definition a viscosity must always be dissipative, transferring kinetic energy into internal energy, and mu...
متن کاملAn Optical Measurement System to Measure Velocity and Provide Shock Wave Pressure Diagrams
This paper introduces an optical measurement system for shock wave characteristics. The system works by mountinga metal plate attached to spring mounts against the shock wavefront. This set is sealed and can plot the shock wave pressure diagram by measuring plate's displacement, radiation and changing the reflection of light during shock wave conflict, and converting these optical data to volta...
متن کاملViscosity measurement based on shear-wave laser speckle contrast analysis.
Tissue viscosity is correlated with tissue pathological changes and provides information for tissue characterization. In this study, we report an optical method to track continuous shear-wave propagation at centimeter depths in an optically turbid medium. Shear-wave attenuation coefficients were measured at multiple frequencies using shear-wave laser speckle contrast analysis (SW-LASCA) to quan...
متن کاملPeriodic Wave Shock solutions of Burgers equations
In this paper we investigate the exact peroidic wave shock solutions of the Burgers equations. Our purpose is to describe the asymptotic behavior of the solution in the cauchy problem for viscid equation with small parametr ε and to discuss in particular the case of periodic wave shock. We show that the solution of this problem approaches the shock type solution for the cauchy problem of the in...
متن کاملThe Riemann problem admitting δ′-shock wave type solution (the vanishing viscosity approach)
In this paper, using the vanishing viscosity method, a solution of the Riemann problem for the system of conservation laws ut + ( u ) x = 0, vt + 2 ( uv ) x = 0, wt + 2 ( v + uw ) x = 0 with the initial data (u(x, 0), v(x, 0), w(x, 0)) = { (u−, v−, w−), x < 0, (u+, v+, w+), x > 0, is constructed. This problem admits a δ′-shock wave type solution, which is a new type of singular solutions to sys...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Reviews of Modern Physics
سال: 1991
ISSN: 0034-6861,1539-0756
DOI: 10.1103/revmodphys.63.919