The plasma thermal conductivity of three-dimensional (3D) strongly coupled Yukawa fluids (SCYFs) has been investigated under the influence of varying external force fields through the recently improved homogenous nonequilibrium molecular dynamics (MD) approach. The effects of external field strength (F*) have been calculated along with various combinations of plasma coupling (Γ) and screening parameter (κ) on the plasma thermal conductivity of SCYFs using homogenous nonequilibrium MD (HNEMD) simulations. New investigations show that the plasma thermal conductivity of complex plasmas decreases with an increase of external force field strength and plasma coupling (Γ). Our calculations show that the decreasing behavior is noted for plasma thermal conductivity with increasing screening parameter and system size. The HNEMD simulation results under different force field strengths are in satisfactory agreement with previous numerical results of nonequilibrium MD and equilibrium MD simulations and with reference data points and it showed that the deviations are within less than ±20% for the presented results. It has been shown that our numerical results extended the range of external force field strength up to 0.001 ≤ F* ≤ 0.1 exercised in the previous work in order to establish the size of the linear regimes and to clarify the nature of linearity of 3D SCYFs.
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September 2017
Research Article|
August 14 2017
Studies of force field effects on thermal conductivity of complex plasmas
Aamir Shahzad
;
Aamir Shahzad
a)
1
Department of Physics, Government College University Faisalabad (GCUF)
, Allama Iqbal Road, Faisalabad 38040, Pakistan
2
Key Laboratory of Thermo-Fluid Science and Engineering of Ministry of Education (MOE), Xi'an Jiaotong University
, Xi'an 710049, People's Republic of China
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Mao-Gang He;
Mao-Gang He
2
Key Laboratory of Thermo-Fluid Science and Engineering of Ministry of Education (MOE), Xi'an Jiaotong University
, Xi'an 710049, People's Republic of China
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Syed Irfan Haider;
Syed Irfan Haider
1
Department of Physics, Government College University Faisalabad (GCUF)
, Allama Iqbal Road, Faisalabad 38040, Pakistan
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Yan Feng
Yan Feng
3
Center for Soft Condensed Matter Physics and Interdisciplinary Research, College of Physics, Optoelectronics and Energy, Soochow University
, Suzhou 215006, China
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a)
Author to whom correspondence should be addressed: aamirshahzad_8@hotmail.com and aamir.awan@gcuf.edu.pk. Tel.: +92-41-9201372. Fax: +92-41-9201419.
Phys. Plasmas 24, 093701 (2017)
Article history
Received:
July 03 2017
Accepted:
July 30 2017
Citation
Aamir Shahzad, Mao-Gang He, Syed Irfan Haider, Yan Feng; Studies of force field effects on thermal conductivity of complex plasmas. Phys. Plasmas 1 September 2017; 24 (9): 093701. https://doi.org/10.1063/1.4993992
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