Study on the Influence of Ra Number on the Condensate Characteristics of Stop Pipeline
This paper explores the influence of Ra number on phase transition characteristics of shutdown crude oil,and provides reference for pipeline shutdown time control.A mathematical model of phase change heat transfer of crude oil based on enthalpy method was established.The solid-liquid fuzzy region was treated as a two-phase flow region,and the lattice Boltzmann method was used to solve the control equations of phase change heat transfer of crude oil.The phase change heat transfer process of crude oil is divided into three different stages.It is found that the influence of Ra number on the flow field will decrease with time,and the influence on the condensate reservoir will increase,resulting in obvious morphological changes of the liquid phase rate field.Increasing Ra number in the first stage of heat transfer will make the growth rate of crude oil sinking speed is much larger than that of crude oil rising speed.
phase change flowcrude oilnumerical studylattice Boltzmann methodRa number
NETL
NSTL
万方数据
维普
