A model was built to simulate liquid aluminum leakage during the casting process,including transient trough flow,orifice outflow,and spread,to prevent the explosion.A comparison between the simulation data and the the...A model was built to simulate liquid aluminum leakage during the casting process,including transient trough flow,orifice outflow,and spread,to prevent the explosion.A comparison between the simulation data and the theoretical calculation results verifies that the model has remarkable adaptability and high accuracy.Although the height of liquid aluminum in the mixing furnace and outlet radius are changed,the molten aluminum will not leak during the casting process.The aluminum in the trough moves forward in a wave-like motion and causes a leakage.The spread of the leaked aluminum resembles a long strip on the ground.The leakage amount and spread area of liquid aluminum increase with increasing the height of liquid aluminum in the mixing furnace.展开更多
In this paper, finite element approach using two-dimensional unsteady state problem has been developed to study radial and angular calcium diffusion problem in neurons. Calcium is responsible messenger for transmittin...In this paper, finite element approach using two-dimensional unsteady state problem has been developed to study radial and angular calcium diffusion problem in neurons. Calcium is responsible messenger for transmitting information in communication process between neurons. The most important Ca^2＋ binding proteins for the dynamics of Ca^2＋ is itself buffer and other physiological parameters are located in Ca^2＋ stores. In this study, the model incorporates the physiological parameters like diffusion coefficient, receptors, exogenous buffers etc. Appropriate boundary conditions have been framed in view of the physiological conditions. Computer simulations in MATLAB 7.11 are employed to investigate mathematical models of reaction-diffusion equation, the details of the implementation can heavily affect the numerical solutions and, thus, the outcome simulated on Core（TM） i3 CPU M 330 @ 2.13GHz processing speed and 3GB memory.展开更多
基金The authors are grateful for the financial supports from the National Key R&D Program of China(2017YFC0805100).
文摘A model was built to simulate liquid aluminum leakage during the casting process,including transient trough flow,orifice outflow,and spread,to prevent the explosion.A comparison between the simulation data and the theoretical calculation results verifies that the model has remarkable adaptability and high accuracy.Although the height of liquid aluminum in the mixing furnace and outlet radius are changed,the molten aluminum will not leak during the casting process.The aluminum in the trough moves forward in a wave-like motion and causes a leakage.The spread of the leaked aluminum resembles a long strip on the ground.The leakage amount and spread area of liquid aluminum increase with increasing the height of liquid aluminum in the mixing furnace.
文摘In this paper, finite element approach using two-dimensional unsteady state problem has been developed to study radial and angular calcium diffusion problem in neurons. Calcium is responsible messenger for transmitting information in communication process between neurons. The most important Ca^2＋ binding proteins for the dynamics of Ca^2＋ is itself buffer and other physiological parameters are located in Ca^2＋ stores. In this study, the model incorporates the physiological parameters like diffusion coefficient, receptors, exogenous buffers etc. Appropriate boundary conditions have been framed in view of the physiological conditions. Computer simulations in MATLAB 7.11 are employed to investigate mathematical models of reaction-diffusion equation, the details of the implementation can heavily affect the numerical solutions and, thus, the outcome simulated on Core（TM） i3 CPU M 330 @ 2.13GHz processing speed and 3GB memory.
