Abstract
Drift wave micro-turbulence at ion or electron scale has been extensively studied to understand the transport property over the years. It has been shown that the ion temperature gradient (ITG) driven turbulence with zonal flow dynamics seems to be responsible for the ion heat transport with neoclassical level in Tokamaks. However, high electron transport observed in experiments could not be successfully explained through the conventional electron temperature gradient (ETG) driven turbulence theory. While various alternative mechanisms, including the trapped electron mode (TEM) have been proposed, multi-scale micro-turbulence covering ion and electron scales may also provide a new fluctuation source and transport channel in plasmas. To simulate the nonlinear evolution of such a multi-scale ITG–ETG turbulence involving both kinetic ion and electron dynamics, a new gyrokinetic Vlasov code on high performance architectures is developed, aiming to use more than several thousands CPUs. At the first stage of the large-scale gyrokinetic simulation, the code performance is benchmarked through the calculations of the short wavelength ITG mode comparing with the theoretical results.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Notes
- 1.
1 Non-blocking function can be used because the Poisson solver does not require boundary values of the Poisson equation.
References
Lee GS, Diamond PH (1986) Phys Fluids 29(10):3291
Dorland W, Jenko F, Kotschenreuther M, Rogers BN (2000) Phys Rev Lett 85(26):5579
Smolyakov AI, Yagi M, Kishimoto Y (2002) Phys Rev Lett 89(12):125005
Lee YC, Dong JQ, Guzdar PN, Liu CS (1987) Phys Fluids 30:1331
Morinishi Y (1998) J Comput Phys 143:90
Pekurovsky D. P3dfft homepage. http://code.google.com/p/p3dfft/
Open-mpi. http://www.open-mpi.org
Nishimura Y, Lin Z, Lewandowski J, Ethier S (2006) J Comput Phys 214(2):657
Acknowledgments
The author (P.H.) is grateful for joining the Kyoto University Global COE program and thanks Monbukagakusho (MEXT) for funding this research. He also thanks the Academic Center for Computing and Media Studies of the Kyoto University for providing the necessary supercomputing access for developing this code.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2011 Springer
About this paper
Cite this paper
Hilscher, P.P., Imadera, K., Li, J., Kishimoto, Y. (2011). Towards Gyrokinetic Simulations of Multi-Scale Micro-Turbulence in Tokamaks. In: Yao, T. (eds) Zero-Carbon Energy Kyoto 2010. Green Energy and Technology. Springer, Tokyo. https://doi.org/10.1007/978-4-431-53910-0_31
Download citation
DOI: https://doi.org/10.1007/978-4-431-53910-0_31
Publisher Name: Springer, Tokyo
Print ISBN: 978-4-431-53909-4
Online ISBN: 978-4-431-53910-0
eBook Packages: EngineeringEngineering (R0)