Finite element simulation-based submarine umbilical cable temperature field analysis

Abstract

The invention discloses finite element simulation-based submarine umbilical cable temperature field analysis, and relates to the technical field of umbilical cable temperature field simulation. The method comprises the following steps of: 1, establishing a submarine umbilical cable geometric model in ANSYS simulation software; 2, inputting the composition material parameters of each part of the submarine umbilical cable into ANSYS simulation software, establishing a submarine umbilical cable finite element model, and performing mesh generation; 3, setting a water area around the submarine umbilical cable; 4, setting the value ranges of the ambient temperature, the working current and the convective heat transfer coefficient of the umbilical cable; 5, modeling and simulating the steady-state temperature field of the umbilical cable; 6, modeling and simulating a local heating steady-state temperature field of the umbilical cable; and step 7, modeling and simulating the transient temperature field of the umbilical cable. According to the invention, the submarine umbilical cable temperature field under complex structure and environmental conditions can be accurately calculated, and thenonlinear mapping relationship between each layer of the umbilical cable and the optical fiber temperature can be simply and conveniently obtained.

Description

technical field [0001] The invention relates to a distributed real-time monitoring technology for submarine umbilical cables, in particular to a modeling calculation and analysis method for the temperature field of submarine umbilical cables. A method for temperature distribution of various parts of a submarine umbilical cable belongs to the technical field of online monitoring of submarine umbilical cables. Background technique [0002] With the development and utilization of marine resources, as well as the development of offshore platforms and offshore wind farms, submarine umbilicals have been widely used in recent years. The connecting channel of chemical agents, like the "umbilical cord" between the mother and the fetus, is known as the "lifeline" for the development of deepwater oil and gas fields. Therefore, the stable operation of the umbilical is not only related to the production of the offshore platform, but also to the reliable operation of the power grid of th...

AI Technical Summary

Problems solved by technology

However, due to the complexity of the submarine umbilical cable laying environment and many variable factors affecting heat transfer, the empirical formulas and parameters adopted by the IEC standard reduce the accuracy of the calculation results to a certain extent.

And the IEC standard is to simplify the complex and more accurate field problem into a simpler path problem, which will inevitably introduce errors

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