Associate Professor

- State Key Laboratry of Scientific and Engineering Computing (LSEC)
- Institute of Computational Mathematics and Scientific/Engineering Computing
- Academy of Mathematics and Systems Science
- Chinese Academy of Sciences
Lanbai Building, No. 55 Zhong-Guan-Cun East Road, Beijing 100190, P. R. China

Phone: +86-10-82541027

- Ph.D., Computational Mathematics, Peking Univeristy, China 2007
- B.S., Computational Mathematics, Peking University, China, 2002

- 2010.07 - now   Assistant/Associate Professor, Academy of Mathematics and Systems Science
- 2008.01 - 2010.05 Visiting Assistant Professor, Department of Mathematics, Purdue University
- 2007.09 - 2007.12 Postdoctoral Research Associate, PACM, Princeton University

- Spectral methods
- Modelling and numerical analysis of complex fluids
- Numerical methods for high-dimensional PDEs
- Minimum action methods for phase transition computing

- Bo Li, Shanshan Tang and
*Haijun Yu*, Better Approximations of High Dimensional Smooth Functions by Deep Neural Networks with Rectiﬁed Power Units, to appear on__Commun. Comput. Phys.__2020 :Full TexT: - Tao Tang,
*Haijun Yu*and Tao Zhou, On energy dissipation theory and numerical stability for time-fractional phase field equations,__SIAM J. Sci. Comput.__41(6):2019 :Full TexT: - Xiaoliang Wan and
*Haijun Yu*, Numerical approximation of elliptic problems with log-normal random coefficients,__Inter. J. Uncertain. Quan.__, 9(2) 161-186, 2019 :Full TexT: - Ling Lin,
*Haijun Yu*and Xiang Zhou, Quasi-Potential Calculation and Minimum Action Method for Limit Cycle,__J. Nonlinear Sci.__29(3):961-991, 2019 :Full TexT: - Xiaoliang Wan,
*Haijun Yu*and Jiayu Zhai, Convergence analysis of finite element approximation of minimum action methods,__SIAM J. Numer. Anal.__56(3):1597-1620, 2018 :Full TexT: - Xianmin Xu, Yana Di and
*Haijun Yu*, Sharp-interface limits of a phase-field model with a generalized Navier slip boundary condition for moving contact lines, J. Fluid Mech._ 748:805-833, 2018 :Full TexT: - Xiaofeng Yang and
*Haijun Yu*, Efficient second order unconditionally stable schemes for a phase field moving contact line model using an invariant energy quadratization approach,__SIAM J. Sci. Comput.__40(3):B889-B914, 2018 :Full TexT: - Lin Wang and
*Haijun Yu*, On efficient second order stabilized semi-implicit schemes for the Cahn-Hilliard phase-field equation,__J. Sci. Comput.__77(2):1185-1209, 2018 :Full TexT: *Haijun Yu*and Xiaofeng Yang, Numerical approximations for a phase-field moving contact line model with variable densities and viscosities,__J. Comput. Phys.__334: 665-686, 2017 :Full TexT:- Xiaoliang Wan and
*Haijun Yu*, A dynamic-solver-consistent minimum action method: With an application to 2d Navier-Stokes equations,__J. Comput. Phys.__331:209-226, 2017 :Full TexT: - Xiaoliang Wan,
*Haijun Yu*and Weinan E, Model the nonlinear instability of wall-bounded shear flows as a rare event: a study on two-dimensional Poiseuille flow,__Nonlinearity__28:1409-1440, 2015 :Full TexT: - Jie Shen, Xiaofeng Yang and
*Haijun Yu*, Efficient energy stable numerical schemes for a phase field moving contact line model,__J. Comput. Phys.__284:617-630, 2015 :Full TexT: - Jie Shen, Li-Lian Wang and
*Haijun Yu*, Approximations by orthonormal mapped Chebyshev functions for higher-dimensional problems in unbounded domains,__J. Comput. Appl. Math.__265: 264-275, 2014 :Full TexT: - Jie Shen and
*Haijun Yu*, On the approximation of Fokker-Planck equation of FENE dumbbell model, I: A new weak formulation and an optimal spectral-Galerkin algorithm in 2-D,__SIAM J. Numer. Anal.__50(3): 1136-1161, 2012 :Full TexT: - Jie Shen and
*Haijun Yu*, Efficient spectral sparse grid methods and applications to high-dimensional elliptic equations II. Unbounded domains,__SIAM J. Sci. Comput.__34(2): A1141-A1164, 2012 :Full TexT: - Feng Chen, Jie Shen and
*Haijun Yu*, A new spectral element method for pricing European options under the Black–Scholes and Merton jump diffusion models,__J. Sci. Comput.__52:499-518, 2012 :Full TexT: - Jie Shen and
*Haijun Yu*, Efficient spectral sparse grid methods and applications to high-dimensional elliptic problems,__SIAM J. Sci. Comp.__32(6):3228-3250, 2010 :Full TexT: *Haijun Yu*, Guanghua Ji and Pingwen Zhang, A nonhomogeneous kinetic model of liquid crystal polymers and its thermodynamic closure approximation,__Commun. Comput. Phys.__7(2):383-402, 2010 :Full TexT:*Haijun Yu*and Pingwen Zhang, A kinetic-hydrodynamic simulation of microstructure of liquid crystal polymers in plane shear flow,__J. Non-Newtonian Fluid Mech.__141:116-127, 2007 :Full TexT:

- 2015, 2017, 2018, 2019 Fall @UCAS: Numerical Methods for Partial Differential Equations II
- 2013 Spring @UCAS: Spectral and High-Order Numerical Methods
- 2008, 2009, 2010, 2011 Spring@Purdue: MATH266, Ordinary Differential Equations
- TA @PKU: 2003 Matlab, Parallel Computing; 2004,2005 Advanced Math; 2005 Functional Analysis

- 2020/7/6-10, ICOSAHOM2020 http://www.icosahom2020.org/
- 2020/7/15-17, Mathematical and Scientific Machine Learning (MSML) 2020 in Princeton, NJ, http://msml-conf.org/

- 2019/7/15-19, Valencia(Spain), ICIAM 2019 MiniSumposia Deadline: Nov11, 2018, contributed: Jan 7, 2019.
- 2019/7/22-26, University of Innsbruck, Austria, SciCADE. Registration 290 Euro, until 19th May 2019.
- 2019 Sept 9-13, ETH Zurich, ETH Main building, 8th Workshop on High-Dimensional Approximation