2/14/2023 0 Comments Soltrace polynomail tutorial![]() Ray tracing simulation adopted the Snell's law in 3D to compute the paths of skew rays in the GRIN layers. The light source of ray set generated 3,228 rays for varying line of sight (LOS) from 10° to 40°. Each layer was modeled as a form of 2D polynomial by fitting the refractive index distribution. ![]() ![]() The grid refractive index of the flow field via CFD analysis and Gladstone-Dale relation was discretized into equally spaced layers which are parallel with the projectile's window. The condition for the steady-state solver conducted through computational fluid dynamics (CFD) included Mach numbers 4 and 6 in speed, 25 km altitude, and 0° angle of attack (AoA). The cone-shaped projectile studied has 19° semi-vertical angle a sapphire window is parallel to the cone angle and an optical system of the projectile was assumed via paraxial optics and infrared image detector. The new method uses multiple gradient-index (GRIN) layers for construction of the anisotropic inhomogeneous media and ray tracing simulation. We present a new ray tracing simulation of aero-optical effect through anisotropic inhomogeneous media as supersonic flow field surrounds a projectile. Yang, Seul Ki Seong, Sehyun Ryu, Dongok Kim, Sug-Whan Kwon, Hyeuknam Jin, Sang-Hun Jeong, Ho Kong, Hyun Bae Lim, Jae Wan Choi, Jong Hwa Ray tracing simulation of aero-optical effect using multiple gradient index layer
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