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yybelinda/README.md

Hi, I'm Yang Yang (杨旸)

Combustion dynamics & thermoacoustics — from heavy-duty gas turbine combustors to open-source low-order models.

  • 🎓 PhD in Energy Engineering (Aalborg University, Denmark) — LES of swirling reacting flows
  • 🎓 Bachelor and Master in aeroengine from BUAA, Beijing University of Aeronautics and Astronautics / Beihang University
  • 🎓 Part-time Master of Science in Probability and Mathematical Statistics, Renmin University
  • 🔧 15+ years of gas-turbine combustion R&D: Alstom Power (GT26/GT36 reheat combustors), Ansaldo Energia, and the Chinese Academy of Sciences (Institute of Engineering Thermophysics, Hundred-Talents Program PI)
  • 📐 ~20 journal & conference papers (ASME Turbo Expo, JEGTP, Fuel, Applied Acoustics) · 19+ patent families (EP/CN)

What I work on

  • Thermoacoustic instability of lean-premixed and reheat combustors: linear stability, flame transfer / describing functions (FTF / FDF), Helmholtz dampers
  • Nonlinear dynamics: Stuart–Landau amplitude equations, Hopf bifurcation, limit-cycle prediction, applicability of low-dimensional models
  • Data-driven combustion diagnostics: POD, DMD, singular spectrum analysis (SSA) of pressure / heat-release signals
  • Combustor design: low-emission swirl heads, multi-burner arrangements, hydrogen-ready nozzles (8+ patent families)
  • Low-order modelling in pure Python (thermoacnet, ftf-blocks)

Open source

Repo What it does
thermoacnet Thermoacoustic network stability analysis in Python: ducts, area jumps, burners, Helmholtz resonators, n-τ flames, modal-to-state-space core — verified against 19 analytical anchors
ftf-blocks Modular building blocks for flame transfer functions: six elementary operators, series/parallel assembly rules, two-path swirl interference
ftf-to-sl From flame transfer functions to Stuart–Landau oscillators: parameter extraction + (K, ζ) applicability maps for swirl-combustor limit cycles
microgt-combustor-1d 1D preliminary design suite for micro gas turbine combustors: mission profile → cycle → geometry → airflow split → swirler/nozzle → wall thermal network → materials

📄 Preprint

  • Singular spectrum analysis of transient heat release in a premixed swirling combustor
    Yang Yang DOI

Toolkit

Python (NumPy/SciPy) · CFD: ANSYS Fluent (UDF), STAR-CCM+ · LES & system identification · POD/DMD/SSA · acoustic transfer-matrix measurements (multi-microphone)

Open to

  • Joint research & co-authoring — now. Remote collaboration on FTF/FDF identification, nonlinear thermoacoustics, and data-driven diagnostics (POD/DMD/SSA). Happy to work on shared data, benchmark cases, or papers.
  • Guest lectures & seminars on industrial combustor stability practice (what OEM data really looks like, and what low-order models miss).
  • Research visits — short stays and secondments possible now; extended sabbatical window from April 2028.
  • Consulting: combustor stability assessment, FTF test-rig design, Helmholtz damper tuning, design reviews.

📩 Contact: [yybelinda0000@163.com]

Languages: Chinese (native), English (working), German (B1)

Pinned Loading

  1. ftf-to-sl ftf-to-sl Public

    From flame transfer functions to Stuart–Landau oscillators: parameter extraction and (K, ζ) applicability maps for swirl-combustor thermoacoustic limit cycles.

    Python 1

  2. thermoacnet thermoacnet Public

    Thermoacoustic network stability analysis in Python — state-space elements with analytical-anchor verification

    Python 1

  3. ftf-blocks ftf-blocks Public

    Modular building blocks for flame transfer functions — six operators; series/parallel assembly rules, two-path interference

    Python