Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/2173
Authors: | Quareni, F.* Tallarico, A.* Dragoni, M.* |
Title: | Modeling of the steady-state temperature field in lava flows lévees | Journal: | Journal of Volcanology and Geothermal Research | Series/Report no.: | 132/(2004 | Publisher: | Elsevier | Issue Date: | 2004 | URL: | www.elsevier.com/locate/jvolgeores | Keywords: | steady-state temperature lava flow |
Subject Classification: | 04. Solid Earth::04.08. Volcanology::04.08.08. Volcanic risk | Abstract: | The rationale of lava flow deviation is to prevent major damage, and, among the possible techniques, the opening of the flow leve¤es has often been demonstrated to be suitable and reliable. The best way to open the leve¤es in the right point, in order to obtain the required effect, is to produce an explosion in situ, and it is then necessary to map with the highest precision the temperature field inside the leve¤es, in order to design a safe and successful intervention. The leve¤es are formed by lava flows due to their non-Newtonian rheology, where the shear stress is lower than the yield stress. The leve¤es then cool and solidify due to heat loss into the atmosphere. In this work we present analytical solutions of the steady-state heat conduction problem in a leve¤e using the method of conformal mapping for simple geometrical shapes of the levee cross-section (triangular or square). Numerical solutions are obtained with a finite element code for more complex, realistic geometries. |
Appears in Collections: | Article published / in press |
Show full item record
Page view(s)
218
checked on Apr 17, 2024
Download(s) 20
319
checked on Apr 17, 2024