Large Eddy Simulation of a Tornado Flow Around a Train
A tornado is a destructive rotating column of air extending from a cloud to the ground. It may kill people and damage property. Also there are possibilities of derailment of trains. Some train-turnover accidents are suspected to have been caused by tornadoes in Japan. For instance, a train of the JR Uestu line was overturned by a gust in 2005. According to the accident analysis, a tornado or downburst probably generated the gust (Aircraft and railway accidents investigation commission: railway accident analysis report RA2008 -4 (2008), (in Japanese), ). In 2006, a train of the JR Nippo line was overturned by a tornado (Aircraft and railway accidents investigation commission: railway accident analysis report RA2008 -6 (2008), (in Japanese), ).
This work was partly supported by JSPS KAKEN Grant Number 26350491.Software licenses were provided by AVL List GMBH. Computations were performed at SNIC (Swedish National Infrastructure for Computing) at the Center for Scientific Computing at Chalmers (C3SE) and the National Supercomputer Center (NSC) at LiU.