Kaiqiao Wu

Office: Roberts Building 225
Email: kaiqiao.wu.13@ucl.ac.uk


  • MSc, Chemical Engineering, University College London, London UK (2013-Present)
  • BEng, Chemical Engineering, East China University of Science and Technology, Shanghai, China (2013)

Fluidized beds are one of the most challenging reactors in industry from the point of view of design, scale-up and control due to their chaotic dynamics. Fluidized bed engineering would be considerably simplified by imposing a more ordered structure in the reactor.

More than a decade ago, experimental measurements showed that by pulsing the gas flow entering the bottom distributor plate of a fluidized bed within a certain range of frequencies, a remarkably regular pattern of bubbles emerges, rather than the typical chaotic flow of bubbles similar to that in boiling water. This is especially clear in quasi-two dimensional beds (two vertical plates with a thin space filled with particles in between), in which a hexagonal array of bubbles rises. As the patterns are so robust, finding these regular patterns will allow us to test different Computational Fluid Dynamics (CFD) codes, like a fingerprint, which is of increasing relevance as CFD codes are more and more used in fluidized bed simulation and design for research and industrial applications. Simulations in this project are undertaken in collaboration with the Eindhoven University of Technology.

Project:Pattern formation in pulsed fluidized beds


Wu, K., De Martín , L., Mazzei, L., & Coppens, M.-O. (2016). Pattern formation in fluidized beds as a tool for model validation: a two-fluid model based study. Powder Technology, 295, 35-42. doi:10.1016/j.powtec.2016.03.011.(link)

Wu, K., de Martín , L., & Coppens, M.-O. (2017). Pattern formation in pulsed gas-solid fluidized beds-the role of granular solid mechanics. Chemical Engineering Journal, (In press). https://doi.org/10.1016/j.cej.2017.05.152. (link)

Kaiqiao Wu