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 Invited talks


6.  Xi GaoSuperDEM 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. Gao, X., 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. Gao, X., 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. Gao, X., 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. Gao, X., 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.



Conference presentations


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. Gao, X., 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. Gao, X., 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., Gao, X., 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. Gao, X., 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. Gao, X., 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., Gao, X., 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. Gao, X., 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., Gao, X., 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. Gao, X., 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. Gao, X., 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.Gao, X., 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. Gao, X., 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. Gao, X., 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. Gao, X., 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., Gao, X., 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. Gao, X., 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

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.



Participation in organizing conferences

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.



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