Double-layer heat preservation coring pipe structure design and flow field numerical simulation analysis method

The invention provides a double-layer heat preservation coring pipe structure design and flow field numerical simulation analysis method. Comprising the following six steps: investigating related data of the coring pipe, determining a design principle of the structure of the coring pipe, designing the coring pipe suitable for field exploration, modeling, checking the strength of the modeled coring pipe, performing internal flow field analysis on the coring pipe, performing temperature field analysis on the interior of the coring pipe, and obtaining a result. According to the method, a targeted coring pipe is designed by combining geological conditions of field exploration, modeling is carried out through software, then stress analysis is carried out on the modeled coring pipe, the condition of a bidirectional load which can be applied in actual application is simulated, then internal flow field analysis is carried out through a numerical simulation tool, and finally, the internal flow field of the coring pipe