Methods, systems and media for analyzing transient parameters of multiphase flow at the interface
By employing a dual-time-step multiphase lattice Boltzmann flux solver for mesoscopic equations and an exact block matrix algorithm, the error problem in transient parameter analysis of multiphase flow interfaces is solved, improving analysis accuracy and computational efficiency.
CN121859797BActive Publication Date: 2026-05-26SICHUAN UNIV
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SICHUAN UNIV
- Filing Date
- 2026-03-18
- Publication Date
- 2026-05-26
AI Technical Summary
Technical Problem
Existing multiphase lattice Boltzmann flux solvers suffer from high error rates and low accuracy in the analysis of transient parameters of multiphase flow interfaces.
Method used
The mesoscopic equations employ a dual-time-step multiphase lattice Boltzmann flux solver, discarding the physical time term and considering only the virtual time term of pressure. Combined with the DPLUR implicit algorithm for exact block matrices, the solution efficiency and accuracy are improved through the similarity diagonalization process of the Jacobian coefficient matrix.
Benefits of technology
This reduces the compressibility error of interfacial flow velocity, improves the accuracy of transient parameter analysis, and enhances the utilization efficiency of computer resources.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN121859797B_ABST
Abstract
This invention relates to a method, system, and medium for analyzing transient parameters of multiphase flow interfacial flow, and pertains to the field of interfacial flow analysis technology for multiphase flows. The transient parameters include instantaneous pressure and instantaneous velocity. The method includes: acquiring the target region for analyzing transient parameters of multiphase flow interfacial flow, and dividing the target region into grids to obtain each grid cell; for any given grid cell, acquiring the initial pressure, initial flow velocity, cell area or volume, surface tension, and body force of the fluid within the cell, and solving for the instantaneous pressure and instantaneous velocity based on a constructed two-time-step multiphase lattice Boltzmann flux solver mesoscopic equation. In the constructed mesoscopic equation, the pressure evolution equation discards the physical time term, considering only the virtual time term of pressure. Compared with existing technologies, the compressibility error of the interfacial flow velocity is lower, thereby improving the accuracy of the transient parameter analysis results.
Need to check novelty before this filing date? Find Prior Art