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Urban evacuation is of great significance in saving human lives when disasters strike major cities. Comparing with the large population to evacuate, the number of evacuation guiders is much smaller. Since the location of evacuation guiders can greatly influence the evacuation process, it is crucial to identify the most critical locations to assign guiders. The assignment optimization for evacuation...
A system reliability analysis method based on system functional model is presented for the limitations of existing reliability modeling and assessment methods which have difficulties in reliability modeling, especially for complex systems. System function failure model is established firstly, and then the minimum cut sets are obtained through the fault simulation. System task reliability can be calculated...
Because of the catastrophic effects downstream of dam-break failure, more and more researchers around the world have been working on the study of dam-break flows to accurately forecast the downstream inundation mapping. With the rapid development of computer hardware and computing techniques, numerical study on dam-break flows has been a popular research subject. In the paper, the numerical methodologies...
This paper establishes a hardware-in-the-loop realtime simulation system of long stator linear synchronous motor (LSM) drive with neutral point clamp (NPC) 3-level AC-DC-AC converter for high speed maglev train. The dynamic model of the LSM supplied by two parallel converters is described in detail. Hardware configuration, simulation algorithms and system model based on dSPACE real-time simulation...
A displacement back analysis, named as CACA-SVM, was proposed by combining the Support Vector Machines (SVM) and the Continuous Ant Colony Algorithm (CACA). The model used both the nonlinear characteristics of the Support Vector Machines to reduce numerical calculation and the global optimization performance of the Continuous Ant Colony Algorithm to avoid trapping in local optimum. The model was applied...
Numerical simulations of SAR induced in vehicle occupants due to on-board radio transmissions have been used to investigate possible approaches for assessing compliance with electromagnetic field exposure recommendations. The simulations employed 3D numerical models based on real vehicle geometry and human simulants of realistic size and shape. Results have been obtained for transmissions from a number...
Numerical simulation has been carried out to assess the effects of different source antenna locations on electric field distribution within a vehicle cabin at 2400 MHz. Only fixed onboard antennas mounted within the vehicle cabin are considered. The car model contains only metallic parts and ignores dielectric furnishings. Localised electric field visualizations within the vehicle cabin are obtained...
Food requires strict temperature control throughout the so-called 'cold-China', in which a particular storage temperature is need for each link. Display cabinets are known to be the weakest link from this point of view and, therefore, particular attention is paid to their design. And it is a real challenge for manufacturers and users of refrigerated display cabinets to provide the products with minimal...
In this paper, dynamic modeling is investigated for shear stress induced adenosine triphosphate (ATP) release from endothelial cells (ECs). The modulation of ATP concentration at the endothelial surface by viscous shear flow is extensively investigated through numerical analysis based on the release model. The simulation results demonstrate that shear stress induced ATP release, convection and diffusion...
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