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A numeric simulation of gas migration in a fully mechanized coal caving stope based on Lattice Boltzmann Method is put forward. A mining stope includes an inlet air tunnel, a return air tunnel, a working face and a goaf. There are two different states of air movement in a stope: turbulent flow in the inlet air tunnel, the return air tunnel, the working face (the three parts are simplified as working...
Since fabrication of microchips by MEMS technology has emerged, microchips that can interact with biological samples like virus, bacteria, DNA has been developed. Considering the advantages such as cost, dimension and compatibility with IC fabrication, these chips have found specific application areas. Microfluids and microfluidics constitute one of the major research areas of this emerging field,...
The numerical simulation of flow in recycled water pump intake sump of thermal power plant is carried out by k-epsiv turbulence model. According to the results of numerical simulation, the influence of different sump sizes combination on the flow flied is valuated. On the basis of ensuring the water flowing in the sump with a good flow pattern, the optimal ranges of main sizes saving the project investment...
A current challenge in scientific computing is how to curb the growth of simulation datasets without losing valuable information. While wavelet based methods are popular, they require that data be decompressed before it can analyzed, for example, when identifying time-dependent structures in turbulent flows. We present adaptive coarsening, an adaptive subsampling compression strategy that enables...
An exhaustive current meter study was conducted last fall (2007) in the St. Lawrence Estuary in the vicinity of Gros-Cacouna, near Ile Rouge and Ile aux Lievres. Five Acoustic Doppler Current Profilers (ADCP) were deployed to monitor current speed (Cs), current direction (Cd), and wave parameters (significant wave height (Hs) and direction of propagation) over a period of twenty (20) days. Four 600...
Many vibration environments are not related to a specific driving frequency and may have input from multiple sources which may not be harmonically related. Examples may be excitation from turbulent flow as in air flow over a wing or past a car body, or acoustic input from jet engine exhaust, wheels running over a road, etc. With these types of vibration, it may be more accurate, or of more interest...
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