Gasoline is so volatile that a large amount of vapor is quickly evolved from the gasoline surface. If motor gasoline is spilt for the purpose of arson or leaked out extensively on a floor by an accident, the gasoline vapor diffused into air and a flammable gas zone is formed in the immediate surroundings. In these cases, it is necessary to clarify the concentration distribution of generated gasoline vapor in order to evaluate fire hazard. On the other hand, flash points of kerosene and light oil are higher than room temperature, and evaporation characteristics of these fuels are different from that of gasoline. Therefore, kerosene and light oil addition to gasoline will decrease vapor pressure and ignitability of gasoline. The aim of this paper is to accurately predict the evaporation and diffusion behavior of gasoline mixed with low-volatile fuel such as kerosene and light oil. We assumed that the components originated in gasoline were selectively volatilized from gasoline mixed with low-volatile fuel and governed by presented prediction models of vapor pressure and evaporation rate of the mixed gasoline. Using the assumption, a prediction model of concentration distribution of combustible vapor over spilt mixed gasoline was derived. To verify the model experimentally, ignition tests of combustible vapor over the mixed gasoline were conducted.
July 31, 2017 Due to the end of the Yahoo!JAPAN OpenID service, My J-STAGE will end the support of the following sign-in services with OpenID on August 26, 2017: -Sign-in with Yahoo!JAPAN ID -Sign-in with livedoor ID * After that, please sign-in with My J-STAGE ID.
July 03, 2017 There had been a service stop from Jul 2‚ 2017‚ 8:06 to Jul 2‚ 2017‚ 19:12(JST) (Jul 1‚ 2017‚ 23:06 to Jul 2‚ 2017‚ 10:12(UTC)) . The service has been back to normal.We apologize for any inconvenience this may cause you.
May 18, 2016 We have released “J-STAGE BETA site”.
May 01, 2015 Please note the "spoofing mail" that pretends to be J-STAGE.