Education/ Degrees:

2016	Ph.D. in Mechanical Engineering (Dr.-Ing.) Karlsruhe Institute of Technology (KIT), Germany PhD thesis: Interface-Resolving Simulations of Gas-Liquid Two-Phase Flows in Solid Structures of Different Wettability
2011	Master (M.Sc.) in Computational Science and Engineering Technische Universität München (TUM), München, Germany Master thesis: Forest Model in Wind Power Site Assessment Software based on OpenFOAM®
2008	Bachelor of Engineering in Material Processing and Control Engineering Huazhong University of Science and Technology (HUST), Wuhan, China

Work History

03/2017 - present	Postdoc researcher Institute for Chemical Technology and Polymer Chemistry (ITCP) and Institute of Fluid Mechanics (ISTM) Karlsruhe Institute of Technology (KIT), Germany
07/2012 – 12/2016	Research Assistant and Ph.D. student Institute for Chemical Technology and Polymer (ITCP) Institute of Catalysis Research and Technology (IKFT) Karlsruhe Institute of Technology (KIT), Germany
01/2015 – 03/2015	Visiting scientist at Department of Mathematics, Virginia Tech, Blacksburg, Virginia, USA
06/2011 – 11/2011	Intern at Ansys Germany GmbH, Otterfing, Germany
11/2010 – 05/2011	Working student for master thesis at IB Fischer CFD+engineering GmbH, München, Germany

Honors

2014	Research Travel Grant by Karlsruhe House of Young Scientists (KHYS) for research visit to Virginia Tech, Blacksburg, Virginia, USA

Teaching

Fluid Mechanics Tutorials (WS 2017/2018)

Research Interests

Computational Fluid Dynamics (CFD)
Multiphase flows, heat transfer and reacting flows
Exhaust gas after-treatment and selective catalytic reduction (SCR) for diesel engine
Droplet wetting and microfluidics, structured chemical reactor
Commercial and open-source CFD technologies, numerical method development

Publications

I: Dissertation

X. Cai. Interface-Resolving Simulations of Gas-Liquid Two-Phase Flows in Solid Structures of Different Wettability, KIT, http://dx.doi.org/10.5445/IR/1000065827 (2016)

II: Journal Articles

V. Fink, X. Cai, A. Stroh, R. Bernard, J. Kriegseis, B. Frohnapfel, H. Marschall, M. Wörner: Drop bouncing by micro-grooves, International Journal of Heat and Fluid Flow 70 (2018) 271-278 https://doi.org/10.1016/j.ijheatfluidflow.2018.02.014

M. Wörner, X. Cai, H. Alla, P. Yue: A semi-analytical method to estimate the effective slip length of spreading spherical-cap shaped droplets using Cox theory , Fluid Dynamics Research 50 (2018) 035501 https://doi.org/10.1088/1873-7005/aaaef6

X. Cai, M. Wörner, H. Marschall, O. Deutschmann, CFD simulation of liquid back suction and gas bubble formation in connected tubes of different cross-sections. Emission Control Science and Technology (2017) 289-301 https://doi.org/10.1007/s40825-017-0073-3

X. Cai, M. Wörner, H. Marshall, O. Deutschmann. Numerical study on the wettability dependent interaction of a rising bubble with a periodic open cellular structure. Catalysis Today 273 (2016) 151-160 http://dx.doi.org/10.1016/j.cattod.2016.03.053

X. Cai, H. Marschall, M. Wörner, O. Deutschmann. Numerical Simulation of Wetting Phenomena with a Phase-field Method using OpenFOAM. Chemical Engineering & Technology 38 (2015) 1985-1992 http://dx.doi.org/10.1002/ceat.201500089

III: Conference Proceedings Papers

X. Cai, H. Marschall, M. Wörner, O. Deutschmann. A phase field method with adaptive mesh refinement for numerical simulation of 3D wetting processes with OpenFOAM®, 2nd International Symposium on Multiscale Multiphase Process Engineering (MMPE), Hamburg, Germany, September 24-27, 2014.
http://www.itcp.kit.edu/deutschmann/download/publications-others/2014_MMPE-2_Cai_et_al.pdf

X. Cai, M. Wörner, O. Deutschmann. Implementation of a Phase Field Method in OpenFOAM® for Simulation of Spreading Droplets and Verification by Test Problems, 7th Open Source CFD International Conference, Hamburg, Germany, October 24-25, 2013.
http://www.opensourcecfd.com/conference2013/proceedings-day-2

IV: Conference Oral Presentations

X. Cai, Y. Wu, H. Marschall, O. Deutschmann, B. Frohnapfel, M. Wörner. Numerical Simulation Campaign on Droplet Rebound from a Hydrophobic Surface, Jahrestreffen der ProcessNet Fachgruppen Fachgruppen Computational Fluid Dynamics, Bremen, Germany, 06-07 March 2018.

X. Cai, Y. Wu, M. Wörner, B. Frohnapfel. Numerical study of droplet impact and rebound on superhydrophobic surface. 70th Annual Meeting of the APS Division of Fluid Dynamics, Denver, Colorado, USA, November 19-21, 2017.

X. Cai, M. Wörner, H. Marschall and O. Deutschmann. Numerical study on the wettability dependent interaction of a rising bubble with a periodic open cell structure. 5th International Conference on Structured Catalysts and Reactors (ICOSCAR-5), Donostia-San Sebastian, Spain, June 22–24, 2016.

X. Cai, M. Wörner, O. Deutschmann. Interface-resolving simulations of gas-liquid flows in a solid sponge structure. 9th International Conference on Multiphase Flow (ICMF 2016), Florence, Italy, May 22-27, 2016.

M. Wörner, X. Cai, H. Marschall, O. Deutschmann. Numerical study on the wettability- dependent interaction of droplets and bubbles with solid structures. 9th International Conference on Multiphase Flow (ICMF 2016), Florence, Italy, May 22-27, 2016.

X. Cai, M. Wörner, H. Marschall, O. Deutschmann. A Phase Field Method for Numerical Simulation of Wetting and Spreading Processes with OpenFOAM®, Jahrestreffen der ProcessNet Fachgruppen Agglomerations- und Schüttguttechnik, Mehrphasenströmungen und Computational Fluid Dynamics, Bingen, Germany, 29. Feb. - 2. Mar. 2016.

X. Cai, H. Marschall, M. Wörner, O. Deutschmann. Development of Phase Field Methods using OpenFOAM® – Part II: Application to Complex Wetting Physics, 10th International OpenFOAM® Workshop, Ann Arbor, Michigan, USA, June 29 – July 2, 2015.

B. Dietrich, S. Meinicke, X. Cai, M. Wörner. Structured chemical reactors: experimental analysis and simulation, ACHEMA 2015, Frankfurt, Germany, June 15–19, 2015.

X. Cai, H. Marschall, M. Wörner, O. Deutschmann:. A Phase Field Method for Numerical Simulation of Wetting and Spreading Processes with OpenFOAM®, Jahrestreffen der ProcessNet Fachgruppen Computational Fluid Dynamics and Mehrphasenströmungen, Lüneburg, Germany, March, 19–20, 2015.

X. Cai, H. Marschall, M. Wörner, D. Bothe, O. Deutschmann. Development of Phase Field Methods for Direct Numerical Simulation of Wetting Processes with OpenFOAM®, 9th International OpenFOAM® Workshop, Zagreb, Croatia, June 23-26, 2014.

X. Cai, M. Wörner, O. Deutschmann. A Phase Field Method for Numerical Simulation of Wetting and Spreading Processes with OpenFOAM®, Jahrestreffen der ProzessNet Fachgruppen Computational Fluid Dynamics, Mischvorgänge und Rheologie, Würzburg, Germany, February 24-26, 2014.

V: Conference Posters

X. Cai, M. Wörner, H. Marshall, O. Deutschmann. CFD simulation of liquid back suction and gas bubble formation in connected tubes of different cross-section. 5th International Symposium on Modeling of Exhaust-Gas After-Treatment (MODEGAT V), Bad Herrenalb, Germany, Sept. 04-05, 2017.

X. Cai, V. Fink, R. Bernard, A. Stroh, Y. Wu, H. Marschall, O. Deutschmann, B. Frohnapfel, M. Wörner. Phase-field Simulation of Droplet Wetting and Impact Phenomena, 2nd International Workshop on Near-Wall Reactive Flows, Darmstadt, Germany, June 01 – 02, 2017.

X. Cai, H. Marschall, M. Wörner, O. Deutschmann. Development of Phase Field Methods with OpenFOAM® and its Application to Dynamic Wetting Processes, 2nd International Conference on Numerical Methods in Multiphase Flows, Darmstadt, Germany, June 30 — July 01, 2014.

VI: Invited Talks

X. Cai. Simulation of Droplet Wetting Process with OpenFOAM®: From Fundamentals to Applications. Simpulseday Multiphase Flows in Powertrain Applications, Automotive Simulation Center Stuttgart, Oct 24, 2017.

X. Cai. Modelling and Simulation of Wetting Phenomena in Solid Structures, Institute of Engineering Mechanics, Karlsruhe Institute of Technology, Feb. 21, 2017.

X. Cai. Modelling and Simulation of Wetting Phenomena in Solid Structures, Institute of Microstructure Technology, Karlsruhe Institute of Technology, Feb. 14, 2017.

X. Cai. Computational Fluids Dynamics (CFD) Simulation of Wetting Phenomena, SIAM Student Chapter Seminar, Virginia Tech, Blacksburg, Virginia, USA, Feb. 12, 2015.

X. Cai. Implementation of a Phase Field Method in OpenFOAM® for Simulation of Spreading Droplets and Verification by Test Problems, Center of Smart Interfaces, TU Darmstadt, Darmstadt, Germany, Dec. 06, 2013.