Penta-Chlorinated Diphenyl as Vacuum Pump Fluids

Vacuum Gauge to Vacuum Pump Valve

Potential chlorinated and brominated interferences on the polybrominated diphenyl ether determinations by GC-MS

Vacuum Birefringence as a Vacuum Emission Process

We argue that the phenomenon of vacuum birefringence in strong inhomogeneous electromagnetic fields can be most efficiently analyzed in terms of a vacuum emission process. In this contribution, we exemplarily stick to the case of vacuum birefringence in a stationary perpendicularly directed, purely magnetic background field extending over a finite spatial extent. Similar field configurations ar...

Thermodynamic Properties of γ–Fluids and the Quantum Vacuum

The thermodynamic behaviour of a relativistic perfect simple fluid obeying the equation of state p = (γ − 1)ρ, where 0 ≤ γ ≤ 2 is a constant, has been investigated. Particular cases include: vacuum(p = −ρ, γ = 0), a randomly oriented distribution of cosmic strings (p = −13ρ, γ = 2/3), blackbody radiation (p = 1 3ρ, γ = 4/3) and stiff matter (p = ρ, γ = 2). Fluids with γ < 1 become hotter when t...

Experimental Study and Three-Dimensional Numerical Flow Simulation in a Centrifugal Pump when Handling Viscous Fluids

In this paper the centrifugal pump performances are tested when handling water and viscous oils as Newtonian fluids. Also, this paper shows a numerical simulation of the three-dimensional fluid flow inside a centrifugal pump. For these numerical simulations the SIMPLEC algorithm is used for solving governing equations of incompressible viscous/turbulent flows through the pump. The k-ε turbulenc...