This paper presents a Computational Fluid Dynamics (CFD) study of a natural gas combustion burner focusing on the effect of combustion, thermal radiation and turbulence models on the temperature and chemical species concentration fields. The combustion was modelled using the finite rate/eddy dissipation (FR/EDM) and partially premixed flame models. Detailed chemistry kinetics CHEMKIN GRI-MECH 3.0 consisting of 325 reactions was employed to model the methane combustion. Discrete ordinates (DO) and spherical harmonics (P1) model were employed to predict the thermal radiation. The gas absorption coefficient dependence on the wavelength is resolved by the weighted-sum-of-gray-gases model (WSGGM). Turbulence flow was simulated using Reynolds-averaged Navier-Stokes (RANS) based models. The findings showed that a combination of partially premixed flame, P1 and standard k-ε (SKE) gave the most accurate prediction with an average deviation of around 7.8% of combustion temperature and 15.5% for reactant composition (methane and oxygen). The results show the multi-step chemistry in the partially premixed model is more accurate than the two-step FR/EDM. Meanwhile, inclusion of thermal radiation has a minor effect on the heat transfer and species concentration. SKE turbulence model yielded better prediction compared to the realizable k-ε (RKE) and renormalized k-ε (RNG). The CFD simulation presented in this work may serve as a useful tool to evaluate a performance of a natural gas combustor.

In the past few years, the demand of multi-view was increased rapidly and there was a lot of research works to improve the technique and fulfil its needs. High Efficiency Video Coding (HEVC) compression standard has been implemented in this work. HEVC is a compression standard designed to reduce bitrate and remain the same quality compared to the previous compression standard Advanced Video Coding (H.264). It will provide a better compression to higher resolution video such as Ultra High Definition (UHD). In this paper presents a preliminary study on Multi-view with depth by using HEVC compression on a real-time streaming protocol. The study of proposed work may help the industry to enhance the viewing experience by multiple camera capture and also resolve the data traffic issue to transmit UHD video. Keywords: High Efficiency Video Coding, 3DHEVC, Multi-view, real-time streaming, Ultra High Definition