Passive scalar interface in a spatially evolving mixing layer (A. Attili and D. Denker)

Quartz nozzle sampling (D. Felsmann)

Dissipation element analysis of a planar diffusion flame (D. Denker)

Turbulent/non-turbulent interface in a temporally evolving jet (D. Denker)

Dissipation elements crossing a flame front (D. Denker and B. Hentschel)

Particle laden flow (E. Varea)

Turbulent flame surface in non-premixed methane jet flame (D. Denker)

DNS of primary break up (M. Bode)

Diffusion flame in a slot Bunsen burner (S. Kruse)

Various quantities in spatially evolving jet diffusion flame (D. Denker)

Dr. Yihua Ren


              Institut für Technische Verbrennung
              RWTH Aachen University
              Templergraben 64
              52056 Aachen

Telefon: +49 (0)241 80-94624
Telefax: +49 (0)241 80-92923

Büro:  209 (2. Etage)

Research Interests

  • In-situ laser diagnostics of multiphase flame environment using Phase-Selective Laser-Induced Breakdown Spectroscopy (PS-LIBS), Laser-Induced Breakdown Spectroscopy (LIBS), Laser-Induced Fluorescence (LII), 3D Tomography Reconstruction, Tunable Diode Laser Absorption Spectroscopy (TDLAS).
  • Machine Learning of turbulent flame based on laser diagnostic data.
  • Flame aerosol synthesis of metal-oxide nanoparticles for energy storage materials, photocatalysts, nanocatalysts.
  • Electric field manipulation of combustion, Electrohydrodynamic flame instability. In-situ laser diagnostic electric field measurement by Second Harmonic Generation (SHG).


  • Yihua Ren, Yiyang Zhang, and Shuiqing Li. Simultaneous single-shot two-dimensional imaging of nanoparticles and radicals in turbulent reactive flows. Physical Review Applied, In press (2020).
  • Yihua Ren, Wei Cui, Heinz Pitsch, and Shuiqing Li. Experimental and numerical studies on electric field distribution of a premixed stagnation flame under DC power supply. Combustion and Flame 215, 103-112 (2020).
  • Yihua Ren, Yiyang Zhang, and Shuiqing Li. Single-shot two-dimensional measurement of nanoparticles in turbulent jet-diffusion flames using phase-selective laser-induced breakdown spectroscopyProceedings of the Combustion Institute 37, no. 2 (2019): 1373-1381.
  • Yihua Ren, Jili Wei, and Shuiqing Li. In-situ laser diagnostic of nanoparticle formation and transport behavior in flame aerosol depositionProceedings of the Combustion Institute 37, no. 1 (2019): 935-942.
  • Jili Wei, Shuiqing Li, Yihua Ren, Yiyang Zhang, and Stephen Tse. Investigating the role of solvent formulations in temperature-controlled liquid-fed aerosol flame synthesis of YAG-based nanoparticlesProceedings of the Combustion Institute 37, no. 1 (2019): 1193-1201.
  • Wei Cui, Yihua Ren, and Shuiqing Li. Stabilization of Premixed Swirl Flames Under Flow Pulsations Using Microsecond Pulsed PlasmasJournal of Propulsion and Power 35, no. 1 (2018): 190-200.
  • Yihua Ren, Wei Cui, and Shuiqing Li. Electrohydrodynamic instability of premixed flames under manipulations of dc electric fieldsPhysical Review E 97, no. 1 (2018): 013103.
  • Qian Mao, Yihua Ren, Kai. H. Luo, and Adri CT Van Duin. Dynamics and kinetics of reversible homo-molecular dimerization of polycyclic aromatic hydrocarbonsThe Journal of chemical physics 147, no. 24 (2017): 244305.
  • Yihua Ren, Shuiqing Li, Wei Cui, Yiyang Zhang, and Lin Ma. Low-frequency AC electric field induced thermoacoustic oscillation of a premixed stagnation flameCombustion and Flame 176 (2017): 479-488.
  • Fengxuan Zhao, Shuiqing Li, Yihua Ren, Qiang Yao, and Ye Yuan. Investigation of mechanisms in plasma-assisted ignition of dispersed coal particle streamsFuel 186 (2016): 518-524.
  • Shuiqing Li, Yihua Ren, Pratim Biswas, and D. Tse Stephen. Flame aerosol synthesis of nanostructured materials and functional devices: Processing, modeling, and diagnosticsProgress in Energy and Combustion Science 55 (2016): 1-59.
  • Qian Mao, Yihua Ren, Kai H. Luo, and Shuiqing Li. Sintering-induced phase transformation of nanoparticles: A molecular dynamics studyThe Journal of Physical Chemistry C 119, no. 51 (2015): 28631-28639.
  • Yihua Ren, Shuiqing Li, Yiyang Zhang, D. Tse Stephen, and Marshall B. Long. Absorption-ablation-excitation mechanism of laser-cluster interactions in a nanoaerosol systemPhysical review letters 114, no. 9 (2015): 093401.
  • Yihua Ren, Yiyang Zhang, Shuiqing Li, and Chung K. Law. Doping mechanism of Vanadia/Titania nanoparticles in flame synthesis by a novel optical spectroscopy techniqueProceedings of the Combustion Institute 35, no. 2 (2015): 2283-2289.
  • Yiyang Zhang, Shuiqing Li, Yihua Ren, Qiang Yao, and D. Tse Stephen. A new diagnostic for volume fraction measurement of metal-oxide nanoparticles in flames using phase-selective laser-induced breakdown spectroscopy. Proceedings of the Combustion Institute 35, no. 3 (2015): 3681-3688.
  • Yiyang Zhang, Shuiqing Li, Yihua Ren, Qiang Yao, and Chung K. Law. Two-dimensional imaging of gas-to-particle transition in flames by laser-induced nanoplasmasApplied Physics Letters 104, no. 2 (2014): 023115.
  • M. Hellmuth, S. Kruse, Y. Ren, J. Hinrichs, M. Plümke, J. Beeckmann and H. Pitsch. Investigation of NOx emission for different laminar premixed CH4-fuel blends stabilized on a flat-flame burner. In Proceedings of the 9th European Combustion Meeting, April 14-17, Lisbon, Portugal, 2019.
  • Y. Ren, Y. Zhang and S. Li. Phase-selective Laser-induced Breakdown Spectroscopy. In Gordon Research Conference on Laser Diagnostics in Energy and Combustion Science, June 23rd-28th, Les Diablerets, Switzerland, 2019.
  • Y. Ren, W. Cui, S. Li and H. Pitsch. Electric field distribution of premixed stagnation flames under manipulations of DC power. Gordon Research Conference on Laser Diagnostics in Energy and Combustion Science, June 23rd-28th, Les Diablerets, Switzerland, 2019.

Offene Stellen/Arbeiten

Initiates file downloadLaser-induced breakdown spectroscopy in diagnosing nanoaerosol systems

(Initiates file downloadLaser-induced breakdown spectroscopy in der Diagnose von nanoaerosol systems)

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If you are interested in project, bachelor, master, diploma / Hiwistellen, send an e-mail or directly come to me. Depending on the interests and prior knowledge, we can make a topic that is suitable for you.