麻豆视频

Research Interests:

My research is in the area of kinetic theory and simulation of plasmas. Most of my current work is in the area of direct numerical simulation of听听turbulence on large听听These simulations are done in a five dimensional phase space using newly developed particle-based methods. These calculations involve many millions of particles with self-consistently calculated electric fields. For the first time, these simulations are showing spectral features and transport levels at least qualitatively similar to turbulent transport observed in large present day experiments. Our goal is a fundamental understanding of plasma turbulence and transport in magnetized plasmas.听Scientific visualization is utilized to analyze the features of the three dimensional turbulent fluctuations.

Selected Publications:

1. 鈥淕yrokinetic 未f simulation of the Toroidal Alfven Eigenmode,鈥� J. Lang, Y. Chen, S. Parker, G. Fu, Phys. Plasmas, 16 102101 (2009).
2. 鈥淧article-in-cell simiulation with Vlasov ions and drift kinetic electrons,鈥� Y. Chen, S. Parker, Phys. Plasmas, 16 052305 2009.
3. 鈥淐ompressed ion temperature gradient turbulence in diverted tokamak edge,鈥� C. Chang, S. Ku, P. Diamond, Z. Lin, S. Parker, T. Hahm, Phys. Plasmas, 16 056108 2009.
4. 鈥淩ole of zonal flows in trapped electron mode turbulence through nonlinear gyrokinetic particle and continuum simulation,鈥� D. Ernst, J. Lang, W. Nevins, M. Hoffman, Y. Chen, W. Dorland, S. Parker, Phys. Plasmas, 16 055906 2009.
5. 鈥淣onlinear saturation of collisionless trapped electron mode turbulence: zonal flows and zonal density,鈥� J. Lang, S. Parker, and Y. Chen, Phys. Plasmas, 15 055907 2008.
6. 鈥淐oarse-graining the electron distribution in turbulence simulations of tokamak plasmas,鈥� Y. Chen, S. Parker, G. Rewoldt, S. Ku, G. Park, C. Cheng, Phys. Plasmas, 15 055905 (2008).
7. 鈥淟ow-noise particle algorithms for extended magnetohydrodynamics closure,鈥� D. Barnes, S. Parker and J. Cheng, Phys. Plasmas, 15 055702 (2008).
8. 鈥淓lectromagnetic gyrokinetic 未f particle-in-cell turbulence simulation with realistic equilib- rium profiles and geometry,鈥� Y. Chen and S. Parker, J. Comput. Phys. 220 839 (2007).
9. 鈥淕yrokinetic 未f simulation of trapped electron mode driven turbulence,鈥� J. Lang, Y. Chen and S. Parker, Phys. Plasmas 14 082315 (2007).
10. 鈥淐oarse-graining phase space in 未f particle-in-cell simulations,鈥� Y. Chen and S. Parker, Phys. Plasmas 14 082301 (2007).