3D Compressible Navier-Stokes Equations Solve Optical Properties of Forced Shear Layers. (2017)

• Record Type: Journal Article
• Authors: Tsai, Bor-Jang; Tsai, Yeong-Pei; Chou, Chung-Chyi; Ho, Yu-Tsung
• Is Part Of: Procedia engineering. Volume 174(2017)
• Page Start: 179
• Page End: 187
• Publication Date: 2017
• Subjects: MacCormack Method -- Godunov Method -- Strehl Ratio; Engineering -- Congresses; Engineering -- Periodicals; Engineering; Conference proceedings; Periodicals; 620.005
• DOI: 10.1016/j.proeng.2017.01.199
• Languages: English
• ISSNs: 1877-7058

Abstract

Abstract: The optical properties of shear layers is a topic of research with applications in high power lasers and optical imaging systems. In recent years, it has been shown that large-scale structures are intrinsic features in a plane turbulent mixing layer. While there has been some research on the effects of turbulence on laser beams, there has been no study of the optical effects of large-scale structures as they exist in shear layer development, nor how these effects may be controlled. Since the susceptibility of a free shear layer to a forcing input increases as the location of the forcing moves closer to the trailing edge of the splitter plate. Disturbances can be imposed on shear layer using very small-amplitude displacements of the splitter-plate trailing edge in a direction perpendicular to the flow direction. We are studying the optical effects of large-scale structures in forced and unforced situations using periodic motion of a small flap at the trailing edge of the splitter plate. Three-dimensional Navier-Stokes equations in conservation law form are solved directly using the WENO scheme for the simulation of a spatially-developing free shear layer.