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


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.

 

Conferences

--Workshop “Theory and Numerics for Kinetic Equations”, Nov. 16-18, 2009, Saarland University, Saarbrucken, Germany.

--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

--CoLab Mathematics Summer School and Workshop on “Kinetics and statistical methods for complex particle systems”, Jul. 13-24, 2009, Lisbon, Portugal.

--PIMS/Accelerate Canada Summer School in PDE: Topics in Kinetic Theory, Jun. 29-Jul. 3, 2009, University of Victoria, Canada.

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

--International Conference on Kinetic and Related Models, Apr. 1-4, 2009, Wuhan University, China.

--Kinetic modelling for socio-economic and related problems, Nov. 27-29, 2008, Vigevano, Italy.

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

--Fourth Pacific Rim Conference on Mathematics, Dec. 7-11, 2007, City University of Hong Kong, Hong Kong.

--Second Workshop on Nonlinear PDEs: Analysis, Computation and Application, May 31-Jun. 2, 2007, Seoul National University, Korea.

--First PhD Student Workshop 2007 (Suzhou) City University of Hong Kong, Apr. 10-11, 2007, China.

--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 R.M. Strain: Optimal time decay of the Vlasov-Poisson-Boltzmann system in ${\mathbb{R}}^3$, accepted by Archive for Rational Mechanics and Analysis (Jan. 18, 2010). pdf file

 

2.      With K. Fellner and C.-J. Zhu: Energy method for multi-dimensional balance laws with non-local dissipation, to appear in Journal Mathematiques Pures Appliquees (2009). pdf file

 

3.      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

 

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

 

5.      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

 

6.      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

 

7.      On the Cauchy problem for the Boltzmann equation in the whole space: Global existence and uniform stability in $L^2_x(H^N_x)$, Journal of Differential Equations 244 (2008), no. 12, 3204-3234. pdf file

 

8.      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

 

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

 

10.  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

 

11.  With S.-P. Lin and C.J. Zhu: Optimal $L^p (1\leq p\leq \infty)$ 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

 

12.  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

 

13.  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

 

14.  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

 

15.  With M. Zhang and C.-J. Zhu: $L^1$ stability for the Vlasov-Poisson-Boltzmann system around vacuum, Mathematical Models and Methods in Applied Sciences 16 (2006), No. 9, 1505-1526. pdf file

 

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

 

17.  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

 

18.  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

 

19.  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.

 

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

 

21.  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 ${\bf R}^n$, Methods and Applications of Analysis 14 (2007), No. 3, 227-250. pdf file

 


Submitted Papers

1.      With A. Lorz and P. Markowich: Global Solutions to the coupled chemotaxis-fluid equations, submitted preprint (May 4, 2009). pdf file

 

2.      With M. Fornasier and G. Toscani: A kinetic flocking model with diffusions, submitted preprint (Sep. 10, 2009). pdf file

 

3.      Hypocoercivity of linear degenerately dissipative kinetic equations, submitted preprint (Dec. 3, 2009). pdf file

 


Work in Progress

1.      Large-time behavior of the Vlasov-Maxwell-Boltzmann system.

 

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 January 23, 2010 by Renjun Duan