Monte Carlo Ray Tracing

2001 ◽  
pp. 33-50 ◽  
Keyword(s):  
Monte Carlo ◽  
Ray Tracing

Analysis of a Hybrid PV/T Concept Based on Wavelength Selective Films

2013 ◽  
Author(s):  
Tejas U. Ulavi ◽  
Jane H. Davidson ◽  
Tim Hebrink
Keyword(s):  
Thin Film ◽  
Monte Carlo ◽  
Total Energy ◽  
Ray Tracing ◽  
Solar Spectrum ◽  
Photovoltaic Module ◽  
Optical Performance ◽  
Technical Performance ◽  
Compound Parabolic Concentrator ◽  
Pv Modules

The technical performance of a non-tracking hybrid PV/T concept that uses a wavelength selective film is modeled. The wavelength selective film is coupled with a compound parabolic concentrator to reflect and concentrate the infrared portion of the solar spectrum onto a tubular absorber while transmitting the visible portion of the spectrum to an underlying thin-film photovoltaic module. The optical performance of the CPC/selective film is obtained through Monte Carlo Ray-Tracing. The CPC geometry is optimized for maximum total energy generation for a roof-top application. Applied to a rooftop in Phoenix, Arizona USA, the hybrid PV/T provides 20% more energy compared to a system of the same area with independent solar thermal and PV modules, but the increase is achieved at the expense of a decrease in the electrical efficiency from 8.8% to 5.8%.

Uncertainties evaluations in the ray-tracing algorithm based on Monte Carlo method

2014 ◽  
Author(s):  
Guojin Feng ◽  
Ping Li ◽  
Yingwei He ◽  
Yu Wang ◽  
Houping Wu
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Method ◽  
Ray Tracing ◽  
Tracing Algorithm

Methods to Accelerate Ray Tracing in the Monte Carlo Method for Surface-to-Surface Radiation Transport

2006 ◽  
Vol 128 (9) ◽  
pp. 945-952 ◽  
Author(s):  
Sandip Mazumder
Keyword(s):  
Monte Carlo ◽  
Ray Tracing ◽  
Radiation Transport ◽  
Three Dimensional ◽  
Intersection Point ◽  
Surface Radiation ◽  
Computational Domain ◽  
Two Dimensional ◽  
Spatial Partitioning ◽  
The Monte Carlo Method

Two different algorithms to accelerate ray tracing in surface-to-surface radiation Monte Carlo calculations are investigated. The first algorithm is the well-known binary spatial partitioning (BSP) algorithm, which recursively bisects the computational domain into a set of hierarchically linked boxes that are then made use of to narrow down the number of ray-surface intersection calculations. The second algorithm is the volume-by-volume advancement (VVA) algorithm. This algorithm is new and employs the volumetric mesh to advance the ray through the computational domain until a legitimate intersection point is found. The algorithms are tested for two classical problems, namely an open box, and a box in a box, in both two-dimensional (2D) and three-dimensional (3D) geometries with various mesh sizes. Both algorithms are found to result in orders of magnitude gains in computational efficiency over direct calculations that do not employ any acceleration strategy. For three-dimensional geometries, the VVA algorithm is found to be clearly superior to BSP, particularly for cases with obstructions within the computational domain. For two-dimensional geometries, the VVA algorithm is found to be superior to the BSP algorithm only when obstructions are present and are densely packed.

Forward projection matrix derivation through Monte-Carlo ray-tracing of KSTAR infra-red imaging video bolometer (IRVB)

2018 ◽  
Vol 89 (10) ◽  
pp. 10E118 ◽  
Author(s):  
Seungtae Oh ◽  
Juhyeok Jang ◽  
Byron Peterson ◽  
Wonho Choe ◽  
Suk-Ho Hong
Keyword(s):  
Monte Carlo ◽  
Ray Tracing ◽  
Projection Matrix ◽  
Infra Red ◽  
Forward Projection
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