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Lixiang878/README.md

Hi, I'm Lixiang (李想)

MSc @ Dalian Maritime University (2027) · CFD + deep learning for flow-field prediction

I build small, inspectable tools at the intersection of physics and machine learning. Every project here runs offline with zero or one core dependency -- because a reviewer should be able to pip install -e . && pytest and see for themselves.


Research

Surrogate modelling of flow in rough rock fractures (first-author paper under review)

  • 616 OpenFOAM LES cases -> FNO + U-Net + AWF adaptive-fusion model
  • RMSE 0.0045, Ux R² 0.9983, Uy R² 0.9970, 10.4x faster than CFD
  • Funded by NSFC Youth Project 42407219

NTDR: point-cloud dimensionality reduction for joint-trace extraction (4th author, Rock and Soil Mechanics 2026, EI/CSCD)

  • SVD-based projection + RGB rasterisation + Canny + DBSCAN
  • 91% time saving vs manual, 90% overlap with ground truth

Projects

project what it does stack
Fracture-Flow-Bench JRC-calibrated aperture synthesis + Reynolds lubrication solver + cubic-law deviation analysis (the validation target sitting upstream of my FNO surrogate) numpy
AeroForge-Agent CFD multi-agent workflow: NL task -> parametric geometry -> OpenFOAM case generated from scratch -> real steady-RANS solve via a native/WSL runtime bridge, validated on the Ahmed-body benchmark (Cd vs experiment) pydantic, asyncio
SmartPort-MultiAgent Multi-agent container-terminal scheduling: berth / quay-crane / yard agents over an asyncio message bus + blackboard; FCFS vs NSGA-II vs MIP(CBC) vs HiGHS-exact + literature benchmarks (absorbed the archived Berth-Scheduler) pydantic, numpy, matplotlib
SFT-Data-Auditor Pluggable rule engine that audits LLM SFT training data and attributes each Bad Case to the rule that caught it stdlib
FNO-Flow-Prediction FNO vs UNet for parametric PDEs (1D Burgers): resolution-invariance, zero-dep core numpy (+optional torch)
LLM-Eval-Harness Lightweight LLM evaluation: multi-model comparison, LLM-as-Judge, Bad Case attribution stdlib
AIGC-TestData-Synth Spec-driven test-data synthesis with dedup (1-Gini evenness) and quality filtering stdlib
Driving-Multimodal-Pipeline Multimodal driving-load evaluation: AHP (geometric mean + CR test) + fuzzy synthesis numpy
LLM-TestCase-Gen LLM-powered unit-test generator that executes every case against the target function stdlib
AI-Memory-Hub Multi-platform AI memory sync + job tracking + knowledge-base maintenance stdlib

Tools & stack

Python PyTorch OpenFOAM FNO U-Net numpy scipy matplotlib Linux Git


"Small, inspectable, runs offline." -- the constraint I design under.

Popular repositories Loading

  1. LLM-Eval-Harness LLM-Eval-Harness Public

    轻量大模型评测框架:多模型对比 / LLM-as-Judge / Bad Case 归因 | Lightweight LLM evaluation harness

    Python

  2. FNO-Flow-Prediction FNO-Flow-Prediction Public

    FNO vs UNet for parametric PDE surrogate modelling (1D Burgers): resolution-invariance, offline-first, zero-dep core + optional torch.

    Python

  3. Driving-Multimodal-Pipeline Driving-Multimodal-Pipeline Public

    Multimodal driving-load evaluation pipeline: AHP + fuzzy comprehensive assessment, numpy offline core.

    Python

  4. LLM-TestCase-Gen LLM-TestCase-Gen Public

    LLM-powered unit-test generator that actually executes what it generates (sandboxed run against the real function).

    Python

  5. AIGC-TestData-Synth AIGC-TestData-Synth Public

    AIGC test-data factory: spec-driven synthesis, dedup, diversity audit (1-Gini), quality filter with reasons.

    Python

  6. AI-Memory-Hub AI-Memory-Hub Public

    AI-powered memory hub for multi-platform sync, job tracking, and knowledge base maintenance

    Python