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In A finite element code based on P2P1 tetra element has been developed for the large eddy simulation (LES) of turbulent flows around a complex geometry. Fractional 4-step algorithm is employed to obtain time accurate solution since it is less expensive than the integrated formulation, in which the velocity and pressure fields are solved at the same time. Crank-Nicolson method is used for second order...
In this paper, we propose a hierarchically iterate model of human conceptualization and cognition. Based on the theory of dual structure of cognition and related physiological evidence, we firstly propose the notion of concept space in human brain and a corresponding conceptualization model. Conceptualization is the process of forming concepts in our brain. The concept of cognition process is then...
Safe egress is one of the key design issues identified by facility planners, manager and inspectors. Computational tools are now available for the simulation and design of emergency evacuation and egress. However, these tools rely heavily on assumptions about individual human and social behaviors, which have been found to be oversimplified, inconsistent and even incorrect. Furthermore, the behaviors...
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