The Numerical Simulation On The Structure Of The Float-glass Tank And The Related Questions Research

This thesis systematically reviewed the development of research methods of domestic and foreign float glass tank, and using Computational Fluid Dynamics software Fluent established mathematical model of glass flow and heat transfer model in the float glass tank. Use simplification processing way to simulation glass melting liquid flow and temperature fields in the float glass tank. The heat transfer uses the direct wall surface heat transfer, the viscous model uses the k-εmodel, and the heat radiation uses the P1 model simulation method to calculate. Calculation and simulation of a variety of melting furnace structure layout, and get the law of heat transfer and fluid flow processes of glass current.In this paper, we meshed the body using Gambit, and the equations were calculated by the Fluent. In order to get visible answers, the results were displayed by Tecplot. So direct-viewing indicated float glass tank flow and temperature field distribution and make results Visualization.The glass current's temperature and flow field distribution situation in float glass tank (650t/day) were studied. It was concluded that this model could express objectively the law of the temperature and flow field distribution of glass current in float glass tank. In the glass tank basic parameters unchanged circumstances, By changing the structure layout and size parameters of the glass tank to study in a Certain structure and In size parameter change situation glass current temperature and flow field distribution laws of glass tank. By comparing the study results and found suitable structure layout and structure of glass tank size parameters choice for different working condition float glass tank. For the neck structure melting furnace, appropriate increase neck width, It can improve glass fluid flow condition which at the right-angle side wall, and reduce the death triangle forming, Is advantageous to the melting end glass liquid homogenize . When the neck width increased, it can enhance the cooling end glass fluid temperature, and brings some influence on the glass fluid forming. It will reduces the glass fluid speed, enhances the effect of homogenize and cooling when arranges a pair of auriculate baths at the melting end. If the auriculate bath is far away from the neck, The convection function will weaker, is easy forms the dead angular region in the auriculate bath right-angle side wall, glass fluid will form crystallization in the here, when temperature fluctuation the glass fluid will taken by the forming glass fluid to the cooling end, and it will affects the glass fluid Forming Performance. It will reduces the glass fluid speed, enhances the effect of homogenize and cooling when arranges a pair of auriculate baths at the cooling end. When arranges oblique angle at the back of the neck, it will reduce the dead region's forming. It is advantageous to the glass quality improvement when the oblique angle can not oversize. When arranges oblique angle at the melting end will avoid the dead region forming. It will reduce the role of erosion to the neck by the glass fluid, improve the glass fluid refining and homogenize. When arranges a pair of auriculate baths in front of neck and arranges oblique angle at the cooling end, it will reduce the glass fluid speed; improve the effect of melting and refining. The suitable oblique angle may reduce the dead region forming and enhances the effect of homogenize and cooling. when arranges weir under the thermal dam, guarantee the melting end has the enough strong natural convection and batch melting in a stable position ,and good for refining and homogenize. In this paper, the experimental method has great practical value for float glass tank technology development, and provides a theoretical basis for float glass tank design.