TY - JOUR
TI - Real time numerical simulation of thermal conductivity of marine gas turbine lubricating oil under complex sea conditions
AU - Xu Donghua
AU - Wang Yongxiang
AU - Su Yidan
AU - Li Jubao
JN - Thermal Science
PY - 2021
VL - 25
IS - 6
SP - 4075
EP - 4081
PT - Article
AB - Due to the influence of the marine environment, marine gas turbine lubricants  are required to have good thermal conductivity. However, the current  research on marine gas turbine lubricants mainly focuses on its corrosion  resistance. Therefore, a real-time numerical simulation of thermal  conductivity of marine gas turbine lubricating oil under complex sea  conditions is proposed. In this paper, the turbulent kinetic energy  equation and the loss transport equation are obtained by introducing the  turbulent column and the k-e model. The Nusselt number in the k-e model can  be regarded as the ratio of convective heat transfer between fluid and  solid wall and internal heat transfer of fluid. According to the equations,  the transient heat transfer model of vertical moving contact parts is  established, and the heat transfer relationship between lubricating oil and  plug group is obtained. The experimental results show that the area of low  temperature in this scheme is larger than that in the traditional scheme,  which means that the efficiency of impingement cooling is improved after the  introduction of the pin structure in the impingement cooling design. The  heat transfer process on the suction surface is stronger than that on the  pressure surface, and the heat transfer coefficient of the blade increases  continuously, reaching the local maximum value at about X/L = 0.65.