基本信息

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姓名：易年余

职称：教授
电子信箱：yinianyu@xtu.edu.cn
办公室：数学院北楼203

个人简介

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易年余，男，湖南攸县人，博士，教授。

学习工作经历

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教育经历：

2007.07-2011.06，湘潭大学，数学与计算科学学院，博士研究生，计算数学
2005.09-2007.06，湘潭大学，数学与计算科学学院，硕士研究生，计算数学
2001.09-2005.06，天水师范学院，数学系，本科，数学与应用数学

工作经历：
2019.01至今，湘潭大学，数学与计算科学学院，教授
2014.01-2018.12，湘潭大学，数学与计算科学学院，副教授
2012.08-2013.12，湘潭大学，数学与计算科学学院，讲师
2011.07-2012.08，湘潭大学，数学与计算科学学院，助教
　2017.12.25-2018.02.05, 北京大学，数学科学学院，访问****
　2016.01.10-2016.05.10, 爱荷华州立大学，数学系，访问****
　2014.07.15-2014.11.15, 澳门大学，数学系，访问****
　2013.11.01-2013.11.25, 洪堡大学，数学系，访问****
　2012.07.01-2012.07.31, 北京大学，数学科学学院，访问****
　2011.09.10-2012.02.10, 爱荷华州立大学，数学系，博士后


主讲课程

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　　本科生：解析几何，常微分方程，概率论与数理统计，高等数学

研究生：数值分析，偏微分方程数值解法，有限元方法数学理论
荀子＠儒效：
不闻不若闻之，闻之不若见之，见之不若知之，知之不若行之；学至于行之而止矣。
　　　
研究方向

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主要研究偏微分方程数值方法及应用：

　　有限元超收敛与重构技术
　　后验误差估计与自适应算法
　　间断有限元方法
　　保持偏微分方程特征的数值方法
　　最优控制问题数值方法
The principle of FEM:Do not forget that you can eat an elephant if you slice it into small enough portions---Russian saying
科研项目

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主持的科研项目：
[1]. 2019.1--2021.12，湖南省****科学基金项目：基于超收敛和重构技术的自适应有限元方法。
　　[2].2017.1--2020.12，国家自然科学基金面上项目：有限元重构方法及在Cahn - Hilliard方程高效计算方法中的应用。
　　[3].2017.1--2019.12，湖南省教育厅重点项目：非线性色散偏微分方程保持方程特性的数值方法研究。
　　[4].2015.1--2017.12，湖南省自科基金面上项目：有限元重构及应用。
　　[5].2013.1--2015.12，国家自然科学基金青年科学基金：新的重构技术及网格质量对超收敛的影响研究。
　　[6].2013.9--2015.9，湖南省优秀博士学位论文获奖作者资助项目：几类浅水波方程直接间断有限元方法研究。
　　[7].2012.1--2015.12，湖南省教育厅优秀青年项目：高精度有限元重构技术与守恒DDG方法。
　　[8].2012.1--2014.12，湖南省自科基金青年项目：有限元梯度重构方法及超收敛。
参与的科研项目：
　　[1].2020.1--2023.12，国家自然科学基金面上项目：超材料中电磁场数值模拟的有限元重构技术及自适应有限元方法。
　　[2].2015.1--2018.12，国家自然科学基金重大研究计划：相场数学模型及相关数学问题高精度数值方法。
　　[3].2013.1--2016.12, 国家自然科学基金：超材料数值模拟及应用。
　　[4].2010.9--2013.9，中德合作项目：四阶问题的自适应有限元方法。
　　[5].2010.1--2013.12，湖南省教育厅重点项目：高质量网格快速生成技术与自适应有限元方法。

论文专著

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[1]. Yanping Chen, Nianyu Yi, and Wenbin Liu, A Legendre Galerkin spectral method for optimal control problems governed by elliptic equations, SIAM J. Numer. Anal., 2008, 46:2254-2275.
[2]. Yanping Chen, Yunqing Huang, Nianyu Yi, A posteriori error estimates of spectral method for optimal control problems governed by parabolic equations, Science in China Series A Mathematics, 2008, 51:1376-1390.
　[3]. Yunqing Huang and Nianyu Yi, The Superconvergent Cluster Recovery Method, J. Sci. Comput., 2010, 44:301-322.
　　[4]. Xiaoqing Xing, Yanping Chen, Nianyu Yi, Error estimates of mixed finite element methods for quadratic optimal control problems, Journal of Computational and Applied Mathematics, 2010, 233:1812-1820.
　　[5]. Yunqing Huang, Qin Liang, and Nianyu Yi, High order compact schemes for gradient approximation, Science China: Mathematics, 2010, 53:1903-1918.
　　[6]. Yanping Chen, Fenglin Huang, Nianyu Yi and Wenbin Liu, A Legendre Galerkin spectral method for optimal control problems governed by stokes equations, SIAM J. Numer. Anal., 2011, 49:1625-1648.
[7]. Yunqing Huang, Huayi Wei, Wei Yang and Nianyu Yi, A new a posteriori error estimates for adaptive finite element methods, DDM XIX, Lecture Notes in Computational Science and Engineering, Y. Huang et al. (eds.) 2011, 78:63-74.
[8]. Yanping Chen, Nianshi Xia, Nianyu Yi, A Legendre Galerkin spectral method for optimal control problems, Journal of Systems Science and Complexity, 2011, 24:663-671.
[9]. Yunqing Huang, Wei Yang, Nianyu Yi, A posteriori error estimate based on the explicit polynomial recovery, Natural Science Journal of Xiangtan University, 2011, 33:1-12.
　　[10]. Yunqing Huang, Hailiang Liu and Nianyu Yi, Recovery of interface derivatives from the piecewise $L^2$ projection, J. Comput. Phys., 2012, 231:1230-1243.
　　[11]. Yunqing Huang, Kai Jiang and Nianyu Yi, Some weighted averaging methods for gradient recovery, Adv. Appl. Math. Mech., 2012, 4:131-155.
　　[12]. Nianyu Yi, Yunqing Huang and Hailiang Liu, A direct discontinuous Galerkin method for the generalized Korteweg-de Vries equation: Energy conservation and boundary effect, J. Comput. Phys., 2013, 242:351-366.
[13]. Yunqing Huang, Yifan Su, Huayi Wei and Nianyu Yi, Anisotropic mesh generation methods based on ACVT and natural metric for anisotropic elliptic equation, Science China: Mathematics, 2013, 56:2615-2630.
[14]. Yanping Chen, Tianliang Hou, Nianyu Yi, Variational discretization for optimal control problems governed by parabolic equations, Journal of Systems Science and Complexity, 2013, 26:902-924.
　　[15]. Hailiang Liu, Yunqing Huang and Nianyu Yi, A direct discontinuous Galerkin method for the Degasperis-Procesi equation, Methods and Applications of Analysis, 2014, 21:83-106.
　　[16]. Yunqing Huang, Wei Yang and Nianyu Yi, Superconvergence analysis for the explicit polynomial recovery method, J. Comput. Appl. Math., 2014, 265:187-198.
　　[17]. Guanghui Hu and Nianyu Yi, An adaptive finite volume solver for steady Euler equations with non-oscillatory k-exact reconstruction, J. Comput. Phys., 2016, 312:235-251.
　　[18]. Hailiang Liu and Nianyu Yi, A Hamiltoniam preserving discontinuous Galerkin method for generalized Korteweg-de Vries equation, J. Comput. Phys., 2016, 321:776-796.
　　[19]. Guanghui Hu, Xucheng Meng and Nianyu Yi, Adjoint-based an adaptive finite volume method for steady Euler equations with non-oscillatory k-exact reconstruction, Computers & Fluids, 2016, 139. 174-183.
　　[20]. Yunqing Huang, Liupeng Wang and Nianyu Yi, Mesh quality and more detailed error estimates of finite element method, Numerical Mathematics: Theory, Methods and Applications, 2017, 10:420-436.
　　[21]. Nianyu Yi and Hailiang Liu, A energy conserving discontinuous Galerkin method for nonlinear variational wave equation, Communication in Computational Physics, 2018, 23:747-772.
[22]. Nianyu Yi, Yunqing Huang and Wei Yang, Function, derivative and high-order derivatives recovery method using the local symmetry projection in one dimensional, Journal of Scientific Computing, 2018, 74:536-572.
[23]. Jianhua Chen, Nianyu Yi, Yongyao Li, Exponential stability of perturbed superstable systems in Hilbert spaces, Semigroup Forum, 2018, 96:126-141.
[24]. Hailiang Liu, Yunqing Huang, Wenying Lu and Nianyu Yi, On accuracy of the mass preserving DG method to multi-dimensional Schrodinger equations, IMA Journal of Numerical Analysis, 2019, 39:760-791.
[25]. Congying Li, Yunqing Huang, Nianyu Yi, An unconditionally energy stable second order finite element method for solving the Allen–Cahn equation, Journal of Computational and Applied Mathematics, 2019, 353:38-48.
[26]. Yaoyao Chen, Yunqing Huang, Nianyu Yi, A SCR-based error estimation and adaptive finite element method for the Allen-Cahn equation, Computers and Mathematics with Applications, 2019, 781:204-223.
[27]. Yidan Zhang, Yunqing Huang, Nianyu Yi, Superconvergence of the Crouzeix-Raviart element for elliptic equation, Advances in Computational Mathematics, 2019.
[28]. Yunqing Huang, Huayi Wei, Wei Yang, Nianyu Yi, Recovery based finite element method for biharmonic equation in two dimensional, Journal of Computational Mathematics, 2019.
[29]. Chao Wu, Yunqing Huang, Nianyu Yi, Jinyun Yuan, Superconvergent recovery of rectangular edge finite element approximation by local symmetry projection, Journal of Scientific Computing, 2019, in press.
[30]. Nianyu Yi, Yunqing Huang, Hailiang Liu, A conservative discontinuous Galerkin method for nonlinear electromagnetic Schrodinger equations, SIAM Journal on Scientific Computing, 2019, in press.
[31]. Yaoyao Chen, Yunqing Huang, Nianyu Yi, Recovery type a posteriori error estimation of adaptive finite element method for Allen-Cahn equation, Journal of Computational and Applied Mathematics, 2019, accepted.

获奖情况

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[1].2007年, 中国计算数学学会第三届优秀青年论文竞赛一等奖.
[2].2013年, 湖南省优秀博士学位论文.
[3].2014年, 全国优秀博士学位论文提名奖.
[4]. 2018年, 湖南省普通高校青年骨干教师培养对象
[5]. 2019年，湖南省自然科学基金****基金获得者