CoSim:一个用于多过程、多相态及多尺度分析的耦合模拟器

CoSim: A Coupling Simulator for Multi‑process, Multiphase, and Multi‑scale Analysis

摘要:

多过程、多相态、多尺度（“3M”）是自然界及工业、工程领域共同面临及亟待解决的问题。数值计算是现代科学研究和工程分析的重要范式。从“3M”的物理力学机制出发，以不同数值方法的优势为基础，发展耦合算法实现数值方法间的优势互补，形成以算法间的“耦合”为特色，并以 GPU 并行加速为支撑实现大规模、高性能计算分析， 研发了新型的高性能数值计算平台—耦合模拟器（CoSim）。CoSim 软件目前涵盖固体力学、流体力学及不同算法间的耦合，共 16 个求解器模块和 1 个 CAE 模块，突破了现有大部分软件集中于单一算法难以解决复杂“3M”问题模拟的瓶颈，有效地实现了岩土体及其它材料在“变形→渐进破坏→灾变”全过程中的连续‐非连续、连续→破裂、流体‐固体、细观‐宏观的耦合分析，以更好地逼近复杂实际的物理力学过程，为解决复杂的“3M”问题提供了有效的新质生产力。

Abstract:

Multi-process, multi-phase, and multi-scale (or "3M") phenomena are critical challenges in nature systems and industrial and engineering fields. Numerical calculation serves as an essential paradigm in modern scientific research and engineering analysis. Starting from the physical-mechanical mechanisms of "3M" and leveraging the strengths of diverse numerical methods, this study developed coupled algorithms to achieve complementary advantages among these methods. A distinctive characteristic of "coupling" between algorithms was formed, supported by GPU parallel acceleration to enable large-scale, high-performance calculation analysis. This led to the development of a novel highperformance numerical calculation platform—Coupling Simulator (CoSim). Currently, the CoSim software includes solid mechanics, fluid mechanics, and couplings between different algorithms, with 16 solver modules and 1 CAE module in total. It overcame the limitations of most existing software that relied on single-algorithm approaches and struggled to simulate complex "3M" problems. Additionally, CoSim enabled coupled analyses—including continuous-discontinuous, continuum-to-fracture, fluidsolid, and micro-macro—for geotechnical and other materials throughout the entire process of "deformation→progressive failure→catastrophe". The software more accurately approximated complex realworld physical-mechanical behaviors, providing a powerful new-quality productivity for tackling intricate "3M" challenges.