We investigated the feasibility of designing an Anger-logic PET detector module using large-area high-gain avalanche photodiodes (APDs) for a brain-dedicated PET/MRI system. Using Monte Carlo simulations, we systematically optimized the detector design with regard to the scintillation crystal, optical diffuser, surface treatment, layout of large-area APDs, and signal-to-noise ratio (SNR, define...

The integration of building Energy Simulation (ES) and Computational Fluid Dynamics (CFD) programs eliminates many assumptions employed in the separate applications, resulting in more accurate predictions of building performance. This paper discusses the methods used to determine convective heat transfer on interior surfaces of building envelope, which is the key linkage between ES with CFD pro...

This research focuses on computational fluid dynamics modeling and experimental analysis of a shrouded wind turbine. A shroud turbine comprises with flanged encircling it for better energy utilization at low speed. The effects diffuser shape flange angle have been studied by performing flow field in Ansys Fluent condensing the size. CFD shows that cycloid gives 7% more velocity than straight sh...

In this paper, the simulation of rolling piston compressor is established using Star-CD, a general computational fluid dynamics (CFD) software. Based on the result, the P-V diagram of compressor’s working process and all kinds of factors influencing the compressor’s overall efficiency are analyzed deeply, then several optimum projects are put forward in order to improve the compressor’s overall...

Visualization of CFD simulation data on unstructured, 3D grids poses several challenges. The wide range of real-world data set sizes and the geometric versatility within individual, unstructured CFD simulation models present special challenges to the engineers analyzing flow simulation results. Users also face perceptual problems such as occlusion, visual complexity, lack of directional cues, a...