Songzhi Yang Research engineer in Bureau Veritas

Présentation

My research primarily focuses on multiphase flow and heat transfer, encompassing a diverse range of topics within these domains. Specifically, my work has addressed subjects such as multiphase flow dynamics, phase change phenomena, and heat transfer mechanisms. For example, I have investigated diesel injection under subcritical and supercritical conditions, cavitating flows, natural convection at high Rayleigh numbers, boundary layer flow physics. Previous work at IRSN focused on the uncertainty quantification and sensitivity studies in pollutant dispersion within near-source fields. Currently, i am working on the simulation of safety in the energy field, for example the simulation of LNG, LH2 leakage, etc.

Publications

Communication dans un congrès (5)

Numerical assessment of Gaussian models for atmospheric dispersion near urban environments in emergency situations Erwan Rondeaux,Songzhi Yang,Irène Korsakissok,Olivier Connan,Philippe Laguionieet al. ERPW25 - European Radiation Protection Week - 11th NERIS workshop 2025, NERIS, Sep 2025, Londres, United Kingdom Communication dans un congrès hal-05295361v1
Comparison of atmospheric dispersion simulations with Lagrangian model and CFD methods, against a full-scale atmospheric tracer measurement in the near field (<200m) Songzhi Yang,Fabien Duval,Irène Korsakissok EGU General Assembly 2025, European Geosciences Union, Apr 2025, Vienne (Austria), Austria Communication dans un congrès hal-05080493v1
Near-field (R<200m) atmospheric dispersion simulation and sensitivity analysis following a full scale atmospheric tracer experiment Songzhi Yang,Irène Korsakissok,Philippe Laguionie,P. Volta HARMO22 - 22nd International Conference on Harmonisation within Atmospheric Dispersion Modelling for Regulatory Purposes, Prof. Marko Kaasik, Institute of Physics, University of Tartu, Estonia, Jun 2024, Pärnu, Estonia Communication dans un congrès hal-04753040v1
LES of natural convection along the vertical wall applied for the scale of small modular reactor ($Ra^* \approx 10^{19}$) Songzhi Yang,Ulrich Bieder ATH 2022 - Advances in Thermal Hydraulics, Jun 2022, Anaheim, United States. pp.311-314, ⟨10.13182/T126-38110⟩ Communication dans un congrès cea-04428811v1
On understanding the transition from internal to external flash boiling Songzhi Yang,Yanfei Li,Jingyu Zhang,Zijie Zhao,Shijin Shuai ICLASS Edinburgh 2021, University of Edinburgh, Aug 2021, Edinburgh & Online, United Kingdom. ⟨10.2218/iclass.2021.6102⟩ Communication dans un congrès hal-04854678v1

Article dans une revue (7)

Near-field atmospheric dispersion simulation and global sensitivity analysis: comparisons to a full-scale atmospheric tracer experiment in a peri-urban area Songzhi Yang,Irène Korsakissok,Erwan Rondeaux,P. Volta Air Quality, Atmosphere & Health, 2025, 18, pp.Pages 3825-3841. ⟨10.1007/s11869-025-01799-0⟩ Article dans une revue hal-05257777v1
3D LES of natural convection in the side-heated vertical wall with cryogenic helium up to $Ra \approx 10^{15}$ Songzhi Yang,R. Nop,Alain Girard,Davide Duri,Etienne Studer Progress in Nuclear Energy, 2024, 170, pp.105115. ⟨10.1016/j.pnucene.2024.105115⟩ Article dans une revue cea-04848393v1
LES of natural convection along a side-heated vertical wall in a water cavity applied for the scale of Small Modular Reactor ($Ra \approx 10^{15}$) Songzhi Yang,Ulrich Bieder,Etienne Studer Nuclear Engineering and Design, 2023, 414, pp.112543. ⟨10.1016/j.nucengdes.2023.112543⟩ Article dans une revue cea-04466640v1
Using of large eddy simulation model for a spatially developing turbulent natural convection boundary layer in water along a side-heated vertical wall with high Rayleigh number ($Ra^* ≈ 8 \times 10^{14}$) Songzhi Yang,Ulrich Bieder International Journal of Thermal Sciences, 2023, 187, pp.108167. ⟨10.1016/j.ijthermalsci.2023.108167⟩ Article dans une revue cea-04412630v1
Real-fluid phase transition in cavitation modelling considering dissolved non-condensable gas Songzhi Yang,Chaouki Habchi Physics of Fluids, 2020, 32 (3), pp.032102. ⟨10.1063/1.5140981⟩ Article dans une revue hal-02553374v1
Real-fluid injection modeling and LES simulation of the ECN Spray A injector using a fully compressible two-phase flow approach Songzhi Yang,Ping Yi,Chaouki Habchi International Journal of Multiphase Flow, 2020, 122, pp.103145. ⟨10.1016/j.ijmultiphaseflow.2019.103145⟩ Article dans une revue hal-02447336v1
A multicomponent real-fluid fully compressible four-equation model for two-phase flow with phase change Ping Yi,Songzhi Yang,Chaouki Habchi,Rafael Lugo Physics of Fluids, 2019, 31 (2), pp.026102. ⟨10.1063/1.5065781⟩ Article dans une revue hal-02061996v1

Poster de conférence (1)

3D LES of natural convection in the side-heated vertical wall with cryogenic helium up to Ra $\thickapprox$10$^{15}$ Songzhi Yang,Alain Girard,N. Luchier,Ulrich Bieder,Etienne Studeret al. IHTC-17 - 17th international heat transfer conference, Aug 2023, Le Cap, South Africa. Poster de conférence hal-04819501v1

Thèse (1)

Modeling of Diesel injection in subcritical and supercritical conditions Songzhi Yang Fluids mechanics [physics.class-ph]. Université Paris Saclay (COmUE), 2019. English. ⟨NNT : 2019SACLC045⟩ Thèse tel-02296577v1