Clusters of galaxies form by gravitational collapse and accretion of subgroups under the influence of gravity. Analyses of the gas thermal structure within clusters obtained from X-ray observations reveals us the underlying dark matter structure and dynamics, provided that the baryonic physics is well understood. We use hydrodynamical N-body simulations of galaxy clusters evolving in cosmologic...

Accelerator Driven nuclear reactor Systems (ADS) have in several respects a prototypical character of the flow and cooling conditions combined with narrow operating conditions due to the materials engaged. E.g. the high local thermal load in the liquid metal cooled spallation target requires a very careful analysis by experimental and numerical means. Some of the main goals of the numerical ana...

in this study, hydroxyapatite (ha) nanocrystals have been synthesized via chemical precipitation technique. diammonium hydrogen phosphate and calcium nitrate 4-hydrate were used as starting materials and sodium hydroxide solution was used as the agent for ph adjustment. the powder sample was evaluated by techniques such as scanning electron microscope, transmission electron microscope, fourier ...

Fibre drawing is an important industrial process for synthetic polymers and optical communications. In the manufacture of optical fibres, precise diameter control is critical to waveguide performance, with tolerances in the submicron range that are met through feedback controls on processing conditions. Fluctuations arise from material non-uniformity plague synthetic polymers but not optical si...

Micro-Channel Heat Sink is a heat exchanger which is used to control the temperature of electronic devices with high heat flux. A comprehensive thermal model for the micro-channels should include three dimensional conduction analysis in the solid body together with three dimensional developing fluid flow as well as heat transfer analyses in the fluid section. This paper reports on a research ...

Due to the tremendous increase in population and emerging energy crisis, surging demand for thermal management of buildings has become essential. Thermal is high importance maintaining optimum comfort controlling drastic environmental impacts. To avoid consumption strategies continuous operation such as active air heaters conditioners, passive driven by phase change material-based storage are e...

As part of sustainable architecture principles and practices, designers need to define building's architectural requirements based on climatic conditions, environmental preservation and reduction in energy consumption. The natural energy sources such as solar radiation affect thermal and lighting performances of buildings depending on its facade characteristics. Traditionally, buildings thermal...

Photon absorbers, masks, and shutters of the third-generation light sources are subjected to intense thermal stress cycles from the high intensity x-ray beams. A collaborative research study is underway at APS and ESRF to establish thermal fatigue design criteria for Glidcop® Al-15, which is commonly used for high-heat-load components. A nonlinear finite element methodology is used for modeling...