Role of anisotropic thermal conductivity in the reversed-field pinch dynamics

2011 ◽  
Vol 18 (5) ◽  
pp. 052502 ◽  
Author(s):  
M. Onofri ◽  
F. Malara ◽  
P. Veltri
Keyword(s):  
Thermal Conductivity ◽  
Reversed Field Pinch ◽  
Anisotropic Thermal Conductivity ◽  
Reversed Field

Role of the m=0 modes in the edge region of a reversed-field pinch during pulsed poloidal current drive

2003 ◽  
Vol 10 (12) ◽  
pp. 4737-4743 ◽  
Author(s):  
A. Cravotta ◽  
G. Spizzo ◽  
P. Zanca ◽  
P. Martin
Keyword(s):  
Current Drive ◽  
Reversed Field Pinch ◽  
Edge Region ◽  
Reversed Field

Role of locked mode in the effectiveness of pulsed poloidal current drive regime in the reversed-field pinch

2005 ◽  
Vol 12 (10) ◽  
pp. 100703 ◽  
Author(s):  
L. Frassinetti ◽  
Y. Yagi ◽  
H. Koguchi ◽  
T. Shimada ◽  
Y. Hirano ◽  
...  
Keyword(s):  
Current Drive ◽  
Reversed Field Pinch ◽  
Reversed Field

Lattice Thermal Conductivity Modelling of a Diatomic Nanoscale Material

2020 ◽  
Vol 10 (5) ◽  
pp. 602-609
Author(s):  
Adil H. Awad
Keyword(s):  
Thermal Conductivity ◽  
Lattice Thermal Conductivity ◽  
Phonon Scattering ◽  
Correction Term ◽  
Nanoscale Material ◽  
New Approach ◽  
Two Samples ◽  
Conductivity Modelling ◽  
Callaway Model

Introduction: A new approach for expressing the lattice thermal conductivity of diatomic nanoscale materials is developed. Methods: The lattice thermal conductivity of two samples of GaAs nanobeam at 4-100K is calculated on the basis of monatomic dispersion relation. Phonons are scattered by nanobeam boundaries, point defects and other phonons via normal and Umklapp processes. Methods: A comparative study of the results of the present analysis and those obtained using Callaway formula is performed. We clearly demonstrate the importance of the utilised scattering mechanisms in lattice thermal conductivity by addressing the separate role of the phonon scattering relaxation rate. The formulas derived from the correction term are also presented, and their difference from Callaway model is evident. Furthermore their percentage contribution is sufficiently small to be neglected in calculating lattice thermal conductivity. Conclusion: Our model is successfully used to correlate the predicted lattice thermal conductivity with that of the experimental observation.

Design concept and confinement prediction of TPE-RX reversed-field pinch device

1999 ◽  
Vol 45 (4) ◽  
pp. 409-419 ◽  
Author(s):  
Y. Yagi ◽  
S. Sekine ◽  
H. Sakakita ◽  
H. Koguchi ◽  
K. Hayase ◽  
...  
Keyword(s):  
Design Concept ◽  
Reversed Field Pinch ◽  
Reversed Field
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