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- W2186807006 abstract "A subsea heat exchanger was designed to meet the cooling demand of reducing the pipeline inlet temperature of production fluid. Computational Fluid Dynamics (CFD) was used to model the external heat transfer in a network of pipes representing the subsea cooler. For computational simplicity only the pipe wall and surrounding water domain were modelled, with internal temperature prediction being calculated separately in a onedimensional model and iteratively incorporated into the CFD model. The system was set up under quiescent conditions, and a purely natural convection flow regime was allowed to develop. For the base case heat exchanger configuration considered, the overall heat transfer coefficient found was 753 Wm -2 K -1 . Sensitivity cases were considered to observe the effect of offsetting the pipes and lifting the subsea cooler higher off the seabed. Modest improvements were gained by such adjustments. The lifting case had the strongest effect with 5% increase in the external heat transfer coefficient (EHTC), whilst the offset case had a 1% increase in the EHTC. NOMENCLATURE Cp specific heat g gravity vector h enthalpy k thermal conductivity k kinetic energy p’ modified pressure Pr Prandtl number T temperature v velocity thermal expansivity density dynamic viscosity eddy frequency" @default.
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- W2186807006 date "2012-01-01" @default.
- W2186807006 modified "2023-09-27" @default.
- W2186807006 title "CFD MODELLING OF A SUBSEA COOLER FOR CALCULATION OF EXTERNAL HEAT TRANSFER COEFFICIENT" @default.
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