Renjun Duan

 

Position: Research Scientist in Partial Differential Equation

 

Email: renjun.duan@oeaw.ac.at

Tel.: +43-732-24685250

Fax: +43-732-24685212

Address:

Johann Radon Institute for Computational and Applied Mathematics (RICAM)

Austrian Academy of Sciences

Altenbergerstrasse 69, A-4040 Linz, Austria

 

Curriculum Vitae (full) pdf file

Note: I am moving to The Chinese University of Hong Kong. Here is my new contact information.


Educations

--PhD, Sep. 2005-Aug. 2008, City University of Hong Kong, Hong Kong

--MSc, Sep. 2002-Jul. 2005, Huazhong Normal University, China

 

Research Interests

I am interested in the theoretical study of partial differential equations arising from Mathematical Physics and Biology such as fluid dynamics, kinetic theory and chemotaxis. Research topics include the Boltzmann equation, Navier-Stokes equations and mixed-type equations with relaxation. By using tools from PDE and Functional Analysis, I try to understand well-posedness and large-time behavior for the Cauchy problem or initial boundary value problem.

 


Academic Visits

--City University of Hong Kong, HK, Dec. 1-31, 2009

--University of Cambridge, UK, Oct. 26-Nov. 22, 2009

--Universitat Autonoma de Barcelona, Spain, Oct. 19-24, 2009

--University of Pavia, Italy, May 24-30, 2009.

--University of Cambridge, UK, Nov. 3-10, 2008.

--Universite de Rouen, France, Feb. 4-8, 2008.

--Institut de Recherche de l'Ecole navale, France, Jan. 7-Feb. 3, 2008.

--National Taiwan University, Taiwan, Jun. 15-Jul. 15, 2007.

 

Selected talks

--Concentration en vitesse et en espace dans les modèles cinétiques et diffusifs (chemotaxis, gravitation, swarming), Oct. 6-7, 2009, IHP and ENS, Paris. pdf file

--Modern Topics in Nonlinear Kinetic Equations, Apr. 20-22, 2009, University of Cambridge, UK. pdf file

--Twelfth International Conference on “Hyperbolic Problems: Theory, Numerics, Applications”, Jun. 9-13, 2008, University of Maryland, USA. pdf file

--International Conference on Conservation Laws & Kinetic equations, Dec. 7-12, 2006, Shanghai Jiao Tong University, China. pdf file

 


Accepted and Published Research Papers

1.      With A. Lorz and P. Markowich: Global Solutions to the coupled chemotaxis-fluid equations, to appear in Communications in Partial Differential Equations (2010). pdf file

 

2.      With M. Fornasier and G. Toscani: A kinetic flocking model with diffusions, to appear in Communications in Mathematical Physics (2010). pdf file

 

3.      With R.M. Strain: Optimal time decay of the Vlasov-Poisson-Boltzmann system in R3, to appear in Archive for Rational Mechanics and Analysis (2010). pdf file

 

4.      With K. Fellner and C.-J. Zhu: Energy method for multi-dimensional balance laws with non-local dissipation, Journal Mathematiques Pures Appliquees, 93 (2010), no. 6, 572-598. pdf file

 

5.      With T. Yang: Stability of the one-species Vlasov-Poisson-Boltzmann system, SIAM Journal on Mathematical Analysis, 41 (2010), no. 6, 2353-2387. pdf file

 

6.      Stability of the Boltzmann equation with potential forces on torus, Physica D: Nonlinear Phenomena 238 (2009), 1808-1820. pdf file

 

7.      With H.-F. Ma: Global existence and convergence rates for the 3-D compressible Navier-Stokes equations without heat conductivity, Indiana University Mathematics Journal 57 (2008), 2299-2320. pdf file

 

8.      With M.-R. Li and T. Yang: Propagation of singularities in the solutions to the Boltzmann equation near equilibrium, Mathematical Models and Methods in Applied Sciences 18 (2008), no. 7, 1093-1114. pdf file

 

9.      On the Cauchy problem for the Boltzmann equation in the whole space: Global existence and uniform stability in L2_{\xi} (HN_x)$, Journal of Differential Equations 244 (2008), no. 12, 3204-3234. pdf file

 

10.  With S. Ukai, T. Yang and H.-J. Zhao: Optimal decay estimates on the linearized Boltzmann equation with time-dependent forces and their applications, Communications in Mathematical Physics 277 (2008), no. 1, 189-236. pdf file

 

11.  With H.-X. Liu, S. Ukai and T. Yang: Optimal Lp-Lq Convergence rates for the Navier-Stokes equations with potential force, Journal of Differential Equations 238 (2007), no. 1, 220-233. pdf file

 

12.  With S. Ukai, T. Yang and H.-J. Zhao: Optimal convergence rates for the compressible Navier-Stokes equations with potential forces,  Mathematical Models and Methods in Applied Sciences 17 (2007), No. 5, 737-758. pdf file

 

13.  With S.-P. Lin and C.J. Zhu: Optimal Lp (1p≤∞) rates of decay to linear diffusion waves for nonlinear evolution equations with ellipticity and dissipation, Nonlinear Analysis: Theory, Methods & Applications 66 (2007), no. 11, 2335-2344. pdf file

 

14.  With T. Yang and C.-J. Zhu: Navier-Stokes equations with degenerate viscosity, vacuum and gravitational force, Mathematical Methods in the Applied Sciences 30 (2007), no. 3, 347-374. pdf file

 

15.  With T. Yang and C.-J. Zhu: Existence of stationary solutions to the Vlasov-Poisson-Boltzmann system, Journal of Mathematical Analysis and Applications 327 (2007), no. 1, 425-434. pdf file

 

16.  With S.-Q. Tang and C.-J. Zhu: Asymptotics in nonlinear evolution system with dissipation and ellipticity on quadrant, Journal of Mathematical Analysis and Applications 323 (2006), no. 2, 1152-1170. pdf file

 

17.  With M. Zhang and C.-J. Zhu: L1 stability for the Vlasov-Poisson-Boltzmann system around vacuum, Mathematical Models and Methods in Applied Sciences 16 (2006), No. 9, 1505-1526. pdf file

 

18.  With T. Yang and C.-J. Zhu: L1 and BV-type stability of the Botlzmann equation with external forces, Journal of Differential Equations 227 (2006), no. 1, 1-28. pdf file

 

19.  With T. Yang and C.-J. Zhu: Boltzmann equation with external force and Vlasov-Poisson-Boltzmann system in infinite vacuum, Discrete and Continuous Dynamical Systems 16 (2006), no. 1, 253-277. pdf file

 

20.  With T. Yang and C.-J. Zhu: Global existence to Boltzmann equation with external force in infinite vacuum, Journal of Mathematical Physics 46 (2005), 053307, 13pp. pdf file

 

21.  With C.-J. Zhu: Asymptotics of dissipative nonlinear evolution equations with ellipticity: different end states, Journal of Mathematical Analysis and Applications 303 (2005), no. 1, 15-35.

 

22.  With C.-J. Zhu: A note on semiconcave function, Applicable Analysis 82 (2003), no. 9, 889-894.

 

23.  With C.-J. Zhu: Existence and uniqueness of entropy solution to initial boundary value problem for the inviscid Burgers equation, Journal of Physics. A. 36 (2003), no. 8, 2099-2107.

 


Conference Papers and Short Surveys

1.      With S. Ukai and T. Yang: A combination of energy method and spectral analysis for studies on systems for gas motions, Frontiers of Mathematics in China 4 (2009), no. 2, 253-282. pdf file

 

2.      The Boltzmann equation near equilibrium states in Rn, Methods and Applications of Analysis 14 (2007), No. 3, 227-250. pdf file

 


Submitted Papers

 

1.      Hypocoercivity of linear degenerately dissipative kinetic equations, submitted preprint (Dec. 3, 2009). pdf file, arXiv:0912.1733v1

 

2.      Global smooth flows for the compressible Euler-Maxwell system: I. Relaxation case, submitted preprint (Jun. 10, 2010). pdf file, arXiv:1006.3606v1

 

3.      With Jose A. Carrillo and Ayman Moussa: Global classical solutions close to equilibrium to the Vlasov-Euler-Fokker-Planck system, submitted preprint (May 7, 2010). pdf file

 

4.      With Robert M. Strain: Optimal large-time behavior of the Vlasov-Maxwell-Boltzmann system in the whole space, submitted preprint (Jun. 7, 2010). pdf file, arXiv:1006.3605v1

 


Work in Progress

1.      Global smooth flows for the compressible Euler-Maxwell system: II. Non relaxation case.

 

2.      With Lizhi Ruan and Changjiang Zhu: On the Cauchy problem of some conservation laws with diffusion-type terms.

 

3.      Dispersion of degenerately dissipative evolution equations.

 

Note: Some information in this part can change as time goes on.


PhD Thesis

Title: Some Mathematical Theories on the Gas Motion Under the Influence of External Forcing pdf file

Note: Most of the information in the thesis has been published in the form of research papers.

 

Last updated on July 26, 2010 by Renjun Duan