The invention discloses an intestinal tract flow field modeling method and device based on bidirectional fluid-
solid coupling. The method comprises the following steps: S1, collecting intestinal tract multi-
modal data; wherein the multi-
modal data comprises geometric parameters, motion characteristics, content statistics and
wall stress strain data of the intestinal tract; s2, performing three-dimensional reconstruction on a
human body real intestinal tract geometric model; s3, performing preprocessing of format conversion and simplified modification on the established intestinal tract geometric model; s4, dividing the preprocessed model into a model fluid domain and a
solid domain, and establishing a bidirectional fluid-
solid coupling model architecture; s5, performing fluid domain
simulation setting: simulating multiphase flow contents, and setting a
fluid simulation model; s6, performing solid domain
simulation setting: setting intestinal
wall material parameters, and simulating intestinal movement; and S7, bidirectional fluid-solid
coupling is realized, and an intestinal tract flow field is simulated. Bidirectional interaction between an intestinal tract wall solid domain and an intestinal tract content fluid domain is considered, and more accurate intestinal tract flow
field simulation is achieved.