Participation in organizing conferences

3. Chair, Shantou Multiphase Process Science and Technology Innovation Symposium, Shantou, Guangdong Province, July 12-15, 2023.

2. Session chair, UK–China International Particle Technology Forum VIII (PFT8) , Dali, Yunan province , July 12, 2021.

1. Session chair, “Computational Approaches to Multiphase Heat, Mass Transfer & Reactive Chemistry I”, 8th World Congress on Particle Technology (WCPT-8), 2018.

 Invited talks

11. 高希，生物质热化学转化反应器的多尺度研究，第20届全国分析与应用裂解学术会议，2023年11月17日。

10. 高希，多相反应器的多尺度研究及应用，第一届粤东化学与化工技术创新论坛， 2023年4月15日。

9. 高希，复杂化工反应器的多尺度研究，汕头市精细化工产业创新战略研讨会，2022年11月3日。

8. Xi Gao. Multiscale investigation of a fluidized bed reactor for biomass fast pyrolysis. The 12th China Congress on Particle Technology,  Haikou, China, April 20, 2023. (Invited Talk)

7. Xi Gao. Multiscale investigation of a fluidized bed reactor for thermochemical conversion of biomass. 2022 6th Youth Academic Conference on Process Engineering, Beijing (Online), China, September, 2022. (Invited Talk)

6. Xi Gao. SuperDEM Solver for Non-Spherical Particle Fluidization Systems: Development, Validation and Application. UK–China International Particle Technology Forum VIII (PFT8) , Dali, Yunan province , July 12, 2021.

5. Xi Gao, Lu, L., Parks, J.E., Shaham, M., Syamal, M. Simulation-Based Engineering of Biomass Fast Pyrolysis Reactors. Fluidization: In Honor of Stuart Daw, 2020 AIChE Annual Meeting. San Francisco, November 2020.

4. Xi Gao, Li, T., Rogers, W.A. Study of residence time distribution in a circulating fluidized bed reactor for biomass pyrolysis vapor upgrading. ChemCatBio session, 255th ACS National Meeting, New Orleans, March 2018. 

3. Xi Gao, Li, T., Rogers W.A. CFD simulation of hydrodynamics, RTD, heat transfer and chemical reaction in a pilot-scale biomass pyrolysis vapor-phase upgrading (VPU) reactor. ChemCatBio session ACS Spring 2019 National Meeting & Exposition, Orlando, April 2019.

2. Xi Gao, Li, T., Rogers W.A., Panday, R., Li, Cheng., Ashfaq, Huda., Hughes, Bryan. Computational fluid dynamic modeling and simulation of biomass pyrolysis vapor-phase upgrading process at reactor scale. COMP: Advances in Multiscale Computational Modeling of Biomass Conversion Processes. ACS Fall 2019 National Meeting & Exposition, San Diego, Sept 2019.

1. Xi Gao, Tingwen Li; Liqiang Lu; William A Rogers; Evaluation of Drag Models for Gas-Solid Fluidization of Geldart A Particles in All Flow Regimes, 8th World Congress on Particle Technology, Orlando, April, 2018.

Talks/Presentations

22. Jianjian Dai, Xi Gao. Experiment and SuperDEM-CFD Simulation Study on Fluidization Behaviors of Binary mixture of spherical and cylindrical particles. 12th National Fluidizaiton Conference, Kamary, XinJiang Province, China, August 10-14, 2023.

21. Bing Wang,  Jianjian Dai, Sijie Li, Yixi Lin, Michael S. Patrascu, Xi Gao. Experiment investigation and multiscale simulation of hydrodynamics and biomass fast pyrolysis in fluidized bed. 12th National Fluidizaiton Conference, Kamary, XinJiang Province, China, August 10-14, 2023.

20. Liqiang Lu, Xi Gao, Mehrdad Shahnam, William Rogers. Multi-Scale Fast Pyrolysis Simulation Framework for Varied Biomass Feedstocks. 2021 AIChE Annual Meeting, Boston, MA, United States, November 2021.

19. M. Brennan Pecha, Xi Gao, Oluwafemi Oyedeji, Matthew Wiatrowski,Chad Peterson,Robert Brown,Charles E. A. Finney, Peter N. Ciesielski. Modeling Biomass Pyrolysis at the Particle Scale: How Anisotropic Permeability Impacts Conversion Time and Reactor Sizing in Anoxic and Autothermal Conditions. 2021 AIChE Annual Meeting, Boston, MA, United States, November 2021.

18.  Ziqing Lao, Liqiang Lu, Xi Gao. Multiscale modeling of single-particle pyrolyzer at high temperature using a multistep kinetic scheme. The 11th (2021) National Fluidization and Particle Technology Conference. Hangzhou, Zhejiang, Oct. 2021.

17. Xiaomeng Xu, Liqiang Lu, Cheng Li, Xi Gao. Assessment of key factors in Coarse-Grained DEM-CFD simulation of fluidization behavior of irregular shape sand particles. The 11th (2021) National Fluidization and Particle Technology Conference. Hangzhou, Zhejiang, Oct. 2021.

16. Xi Gao, Yu., J., Portal, R., Rogers, W.A. Superquadric particle method for non-spherical DEM simulation in open source MFiX: development, implementation and verification. AIChE Annual Meeting, Pittsburgh, Orlando, Nov 2019.

15. Xi Gao, Li, T., Rogers, W.A. Study of residence time distribution in a circulating fluidized bed reactor for biomass pyrolysis vapor upgrading. 255th ACS National Meeting, March 2018.

14. Li, T., Xi Gao, Rogers W.A., Panday, R., Higham, J., Gopalan, B., Breault, G., Tucker, J. Computational Fluid Dynamic Study of Biomass Vapor-Phase Upgrading Process. 8th World Congress on Particle Technology, April 2018.

13. Xi Gao, Li, T., Rogers, W.A. Assessment of Mesoscale Solid Stress in Coarse Grid TFM Simulation of Geldart A Particles in All Fluidization Regimes. AIChE Annual Meeting, Pittsburgh, Oct 29, 2018.

12. Xi Gao, Li, T., Rogers, W.A. Numerical Investigation of Solid Residence Time Distribution in a Circulating Fluidized Bed Riser for Catalytic Upgrading of Biomass Pyrolysis Vapors. AIChE annual meeting, November 3, 2017.

11. Lavey, J., Haghighat, A., Campbell, C., Xi Gao, Kong, Bo, Legg, M., Olsen, M., Vigil, R. D. Semi-Batch Liquid-Liquid Taylor Vortex Flow: Comparison of 3-D and 2-D Eulerian-Eulerian CFD Simulations and Experimental Measurements for Fluid Flow Patterns and Droplet Holdup. AIChE annual meeting, November 2, 2017.

10. Xi Gao, Kong, B. Vigil, R. D. Multiphysics simulation of biomass growth in an airlift photobioreactor: Effect of fluid mixing and shear stress. AIChE annual meeting, November 1, 2017.

9. Rudnicki, P., Xi Gao, Kong, B., Vigil, R.D. A comparative study of photosynthetic unit model for algal growth rate prediction under light/dark cycles. AIChE annual meeting, November 15, 2016.

8. Xi Gao, Kong, B., Ramezani, M., Olsen, M. G., Vigil, R.D. Experimental measurement and CFD-PBM simulation of bubble diameter distribution in an air-water multiphase. AIChE annual meeting, November 15, 2016.

7. Xi Gao, Kong, B., Vigil, R.D. Effect of Mixing, Mass Transfer and Light/Dark Cycles on Microalgae Growth in a Taylor Vortex Photobioreactor. AIChE annual meeting, November 11, 2015.

6. Xi Gao, Kong, B., Vigil, R.D. Comprehensive Computational Model for Combining Fluid Hydrodynamics, Light Transport and Algal Growth Kinetics in a Taylor Vortex Reactor. AIChE annual meeting, November 11, 2015.

5. Xi Gao, Kong, B., Ramezani, M., Olsen, M. G., Vigil, R.D. CFD Investigation of Gas-Liquid Mass Transfer in a Multiphase Taylor-Couette Reactor. AIChE annual meeting, November 10, 2015.

4. Xi Gao, Kong, B., Vigil, R.D. Numerical Investigation of Bubble Effects on Taylor-Couette Flow Patterns in the Weakly Turbulent Vortex Flow Regime. AIChE annual meeting, November 10, 2015.

3. Xi Gao, Kong, B., Ramezani, M., Vigil, R.D., Olsen, M. G. Gas-Liquid Mass Transfer in Taylor-Couette Flow: Experiment and Simulation. AIChE annual meeting, November 16, 2014.

2. Kong, B., Xi Gao, Vigil, R.D. Comprehensive Modeling of Light-Limited Algae Growth Rate in a Taylor Vortex Photobioreactor: From Hydrodynamics, Radiation Transfer to Algae Growth Model, AIChE annual meeting, November 16, 2014.

1. Xi Gao, Wang, L.J., Wu, C., Cheng, Y.W., Li. X. A novel bubble-emulsion model for gas-solid bubbling fluidized beds. Oral presentation (212d). AIChE annual meeting, October 30, 2012.

Conference posters

2. Sijie Li, Yuan Xue, Yili Lin, Bing Wang, Xi Gao. Synergistic Activity of Fe2O3/Al2O3 Catalyst for Hydrogen Production through Pyrolysis-Catalytic Decomposition of plastic. 第20届全国分析与应用裂解学术会议，2023年11月17日。

1. Xuwen Chen, Xi Gao.  Development and validation of SuperDEM for the mixing and segregation of cylinders and spheres in a rotating drum and a fluidized bed.  The 11th (2021) National Fluidization and Particle Technology Conference. Hangzhou, Zhejiang, Oct. 2021.