Abo Bibliothek: Guest

ISSN Online: 2377-424X

ISBN Print: 978-1-56700-474-8

ISBN Online: 978-1-56700-473-1

International Heat Transfer Conference 16
August, 10-15, 2018, Beijing, China

INVESTIGATION OF HEAT TRANSFER COUPLED LARGE DEFORMATION USING SPH

Get access (open in a dialog) DOI: 10.1615/IHTC16.cms.022226
pages 1883-1890

Abstrakt

The coupling phenomenon of large deformation and heat transfer could been seen commonly in the industry, such as metallurgy, glass melting. A deeper understanding of the process is the prerequisite to improve the product quality and energy consumption. The existence of large deformations and free surfaces makes the numerical algorithms based on mesh, such as FVM, FEM, encounter some difficulties. The paper, taking the melting of quartz glass as an example, adopts the smoothed particle hydrodynamics (SPH) to overcome them. The SPH is a developing Lagrange meshless particle method, and usually used to simulate the flow with free surface or deformed boundary. In the model, the isotherm is used as a criterion of the flow/solid determination, and an improved particle number density algorithm is developed to trace the free surface. A heat source is added to the surface particles to get the target temperature. The thermal radiation inside the quartz glass is computed by the Rosseland model. The effects of the initial temperature and the heating surface temperature to the energy consumption and the unmelted zone fraction is discussed. The ascent of initial temperature reduces the energy consumption during the melting and weakens the unmelt zone of quartz after melting. Raising the heat surface temperature also helps to bring the unmelt zone down, while it leads to an increase of energy consumption during the melting.