Simulation of Flow Unsteadiness in Chemical Oxygen-iodine Laser Devices

An Analysis of Mechanisms Underlying Flow Unsteadiness in Chemical Oxygen- Iodine Laser Mixing Systems

High-order Discontinuous Galerkin Methods: Simulation of Coil Flows

We have developed spectral methods in the discontinous Galerkin framework appropriate for simulations of high-speed flows in complex-geometry domains. In this paper we present details of the stability of the method and demonstrate the importance of over-integration for strongly nonlinear problems. We then present results from the application of the method to stability studies of supersonic and ...

Ir Radiation Based Optical Emission Method of Singlet Oxygen Concentration Measurement for Chemical Oxygen Iodine Laser and Studying the Effects of Parametric Variations

The chemical oxygen iodine laser (COIL) is the only chemical laser based on the electronic transitions. It emits at 1315 nm on the transition between the spin-orbit levels of the ground state configuration of the iodine atom. Here near resonant energy transfer takes place from a singlet delta oxygen [O 2 (a 1 Δ)] molecule to an atomic iodine atom. The singlet delta oxygen molecules O 2 (a 1 Δ) ...

Performance analyses of flowing chemical oxygen-iodine laser.

A modified simplified rate-equation model that utilizes the Voigt profile function and another gain saturation model deduced from the kinetic equations are presented for performance analyses of a flowing chemical oxygen-iodine laser. Both models are adapted to both the condition of homogeneous broadening and that of inhomogeneous broadening being of importance and the condition of inhomogeneous...

Mathematical Simulation for the Effects of Flow Control Devices in a Six- strand Tundish in Continuous Casting of Steel Billet

The method of continuous casting of steel is now often used in the metallurgical industry, due to the increasing demand for the production of high – quality steel. An important device of continuous casting machine is the tundish, in which a stabilized steel flow has a crucial effect on the quality and efficiency conditions of the continuous casting process. In this study fluid flows in a six – ...