Abstract:A shock Hugoniot compression curve for water has been measured up to less than 1 GPa. A plane and steady shock wave is produced in water by the flat plate impact of a projectile accelerated by a compressed gas gun. A new experimental procedure was proposed to detect the shock wave front sensitively, which makes it possible to measure shock Hugoniot in higher precision than the previous method. The present method is based on the very large pressure dependence of the refractive index of water upon compression. B… Show more
“…We note that the shock Mach numbers are only slightly greater than 1 for the case of water alone (α 0 = 0) since the pressure perturbations (in water) up to several hundred atmospheres remain very weak (Thompson 1972). This fact was experimentally confirmed by Nagayama, Mori & Shimada (2002) and Inaba & Shepherd (2010).…”
Shock propagation through a bubbly liquid contained in a deformable tube is considered. Quasi-one-dimensional mixture-averaged flow equations that include fluid-structure interaction are formulated. The steady shock relations are derived and the nonlinear effect due to the gas-phase compressibility is examined. Experiments are conducted in which a free-falling steel projectile impacts the top of an air/water mixture in a polycarbonate tube, and stress waves in the tube material and pressure on the tube wall are measured. The experimental data indicate that the linear theory is incapable of properly predicting the propagation speeds of finite-amplitude waves in a mixture-filled tube; the shock theory is found to more accurately estimate the measured wave speeds.
“…We note that the shock Mach numbers are only slightly greater than 1 for the case of water alone (α 0 = 0) since the pressure perturbations (in water) up to several hundred atmospheres remain very weak (Thompson 1972). This fact was experimentally confirmed by Nagayama, Mori & Shimada (2002) and Inaba & Shepherd (2010).…”
Shock propagation through a bubbly liquid contained in a deformable tube is considered. Quasi-one-dimensional mixture-averaged flow equations that include fluid-structure interaction are formulated. The steady shock relations are derived and the nonlinear effect due to the gas-phase compressibility is examined. Experiments are conducted in which a free-falling steel projectile impacts the top of an air/water mixture in a polycarbonate tube, and stress waves in the tube material and pressure on the tube wall are measured. The experimental data indicate that the linear theory is incapable of properly predicting the propagation speeds of finite-amplitude waves in a mixture-filled tube; the shock theory is found to more accurately estimate the measured wave speeds.
“…The simulations utilizing the MG-EOS for liquid water do not match experimental data as well as the ideal gas simulations. Table 1 list the shock thickness and entropy generated for the two values of shock pressure investigated [5,10].…”
Abstract. Capturing and modeling shock wave profiles has a long history in computational analysis. Often artificial irreversibilities and/or smearing schemes are implemented in order to stabilize and resolve shock structures in large-scale simulations. This work presents a direct numeric simulation of the one-dimensional Navier-Stokes equations resolved without the use of artificial viscosity or shock smearing techniques. Initial simulations are compared to a perfect gas analytic solution to validate the technique, then several viscosity models are employed to study the role of temperature and pressure dependent viscosity models. The argon gas results indicated that the shock front thickness and entropy production are in good agreement with the analytic solution and experimental results. The liquid water results utilizing a Mie-Grüneisen equation of state do not compare as favorably.
“…2; Table 1). We tested our simulation models against the plate impact studies of pure H2O by (Nagayama et al, 2002), using the target configurations and material parameters reported by these authors. Both results were in excellent agreement (with standard errors ≤ 5%) leading to a high level of confidence in our modelling procedures.…”
Section: Shewanella Oneidensis Mr-1 (Cip 106686) Was Purchased From Tmentioning
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