Numerical research on flow characteristics of leaking liquid in interstitial space of doublewall oil tank

摘要

The SF double-wall oil tank has an interstitial space with the thickness of 0.1～0.2 mm between the steel inner tank and FRP outer tank, and is equipped with a leak detection device to monitor the interstitial space for 24 hours. If internal structure of the interstitial space is designed unreasonably, the leaking liquid will be difficult to flow to the bottom of interstitial space, so that the leakage detection device cannot detect the leaking problem in time, leading to security risks during the operation process of double-wall oil tank. In this paper, the volume of fluid (VOF) model and the PISO algorithm are used to study the flow characteristics of the leaking liquid in interstitial space of double-wall oil tank based on FLUENT software. In order to reduce the computational complexity, the structure of the interstitial space of the SF double tank is simplified reasonably. It is believed that this research is valuable for the optimal design of the interstitial space structure of double-wall oil tank.