6 results about "Multiphysics coupling" patented technology

The application discloses a kind of multilevel multi-physical coupling method and system for multiple program coupling, it is related to the field of multi-physical field coupling simulation calculation.Its system includes five hierarchical structures of coupling model module encapsulation layer, coupling problem manager encapsulation layer, coupling problem data interaction layer, coupling multilevel scene implementation layer and coupling infrastructure layer.The application can effectively solve the problems such as rigid coupling framework of existing multiple program coupling coupling technical scheme, difficult to unify coupling paradigm, lack of efficient multi-physical field coupling management, coupling decision and close coupling pedigree, poor adaptability of complex coupling scene, etc.by modularizing existing multiple program, systematizing coupling problem, standardizing coupling data interaction and hierarchical coupling management.

The invention discloses a multi-level multi-physical coupling method and system for multi-program coupling, and relates to the field of multi-physical field coupling simulation calculation. The system comprises five hierarchical structures including a coupling model module packaging layer, a coupling problem manager packaging layer, a coupling problem data interaction layer, a coupling multi-level scene implementation layer and a coupling infrastructure layer. According to the invention, through modularization of existing multiple programs, systematization of coupling problems, standardization of coupling data interaction and hierarchy of coupling management, the problems that a coupling framework of an existing coupling technical scheme for coupling multiple programs is rigid, coupling normal forms are difficult to unify, efficient multi-physics field coupling management, coupling decision and tight coupling pedigree are lacked, and the coupling efficiency is low can be effectively solved. And the adaptability of complex coupling scenes is poor.

The invention belongs to the field of multi-physics field coupling modeling and simulation, and relates to a space-time interpolation mapping method for simulation data of a multi-physics field collaborative heterogeneous model. In the aspect of spatial interpolation, target point data is calculated through source point data on the basis of Shepard interpolation, so that the boundaries of physical quantities are ensured. In the aspect of space-time mapping of physical quantities such as load and heat flow, based on the virtual work principle, physical quantity data of each discrete moment of one physical field A is utilized to calculate equivalent physical quantities of unit nodes of another physical field B, and equivalence of the physical quantities of the nodes is guaranteed; and then according to the law of conservation of momentum or energy, calculating the change of momentum in the time step length of the physical field B to obtain the equivalent physical quantity of the unit node in each discrete moment of the physical field B, thereby ensuring the conservation of the physical quantity of the node. The method is suitable for data interpolation and space-time mapping links in collaborative analysis and optimization design of multi-specialty and multi-physics field heterogeneous models.

The invention provides a high-entropy alloy creep performance prediction method based on microstructure dynamic evolution, and belongs to the technical field of alloy material performance prediction. In order to solve the problems that an existing method excessively depends on an empirical formula, and macroscopic performance is separated from a micromechanism, a multi-physics field coupling dynamics calculation framework is constructed. The framework integrates dislocation dynamics, vacancy diffusion and a non-uniform lattice strain theory, and dynamic interaction and co-evolution of dislocation, vacancy and lattice strain are described in a self-consistent manner. Dislocation evolution, vacancy diffusion and interaction between the dislocation evolution, the vacancy diffusion and lattice strain are synchronously solved in each time step, and real-time bidirectional coupling of the dislocation evolution, the vacancy diffusion and the lattice strain is achieved. Experimental verification shows that the method can accurately predict the creep property of the high-entropy alloy and directly generate a creep strain-time curve. According to the method, microstructure evolution in the creep process can be quantified from intrinsic parameters and service conditions of materials, and an efficient theoretical tool and a calculation platform are provided for creep resistance design of the high-entropy alloy.

The present application belongs to the field of multi-physical field coupling modeling and simulation, and relates to a kind of multi-physical field collaborative heterogeneous model simulation data space-time interpolation mapping method.In the aspect of space interpolation, based on Shepard interpolation, target point data is calculated through source point data, thereby ensuring the boundedness of physical quantity.In the space-time mapping of physical quantities such as load and heat flow, based on the principle of virtual work, the equivalent physical quantity of element node of another physical field B is calculated using the physical quantity data of each discrete time of a physical field A, thereby ensuring the equivalence of node physical quantity;then, according to the law of conservation of momentum or energy, the equivalent physical quantity of element node at each discrete time of physical field B is obtained by calculating the change of momentum within the time step of physical field B, thereby ensuring the conservation of node physical quantity.The present application is suitable for data interpolation and space-time mapping in the process of collaborative analysis and optimization design of multi-specialty and multi-physical field heterogeneous models.

This invention discloses an analytical method based on refined modeling using bidirectional coupling of multiple physics fields. The method includes: determining the physical fields involved in the study; establishing models for each physical field; analyzing the coupling mechanism and form of the electro-magnetic-thermal multiphysics fields; establishing a refined transient model of bidirectional coupling of multiple physics fields; solving the multiphysics coupling model; conducting electromagnetic characteristic, energy consumption, and temperature rise tests; determining the transient changes in energy consumption and temperature rise distribution within the research object with time and spatial location, as well as the changes in electromagnetic characteristics under the influence of temperature rise; and obtaining the multiphysics coupling characteristics. This invention, through the coupling of electric, magnetic, and thermal fields, considers the temperature changes caused by accumulated losses, while also incorporating the influence of thermal characteristics on the resistivity of conductors, the permeability of soft magnetic materials, and the operating point of permanent magnets. This reduces the error in describing the internal loss characteristics of the mechanism using the iron loss model, thereby improving the accuracy of the analytical results.