Solution of three-fluid model equations with anomalous transport coefficients for the quiet solar wind

1975 ◽  
Vol 196 ◽  
pp. 205 ◽  
Author(s):  
S. Cuperman ◽  
N. Metzler
Keyword(s):  
Solar Wind ◽  
Fluid Model ◽  
Transport Coefficients ◽  
Anomalous Transport ◽  
Model Equations

Anomalous transport coefficients in a magnetized turbulent plasma

1982 ◽  
Vol 28 (2) ◽  
pp. 193-214 ◽  
Author(s):  
Qiu Xiaoming ◽  
R. Balescu
Keyword(s):  
Transport Coefficients ◽  
Collision Operator ◽  
Turbulent Plasma ◽  
Anomalous Transport ◽  
Weak Turbulence ◽  
Dissipative Effects ◽  
Dependent Transport ◽  
Two Fluid ◽  
Two Fluid Plasma

In this paper we generalize the formalism developed by Balescu and Paiva-Veretennicoff, valid for any kind of weak turbulence, for the determination of all the transport coefficients of an unmagnetized turbulent plasma, to the case of a magnetized one, and suggest a technique to avoid finding the inverse of the turbulent collision operator. The implicit plasmadynamical equations of a two-fluid plasma are presented by means of plasmadynamical variables. The anomalous transport coefficients appear in their natural places in these equations. It is shown that the necessary number of transport coefficients for describing macroscopically the magnetized turbulent plasma does not exceed the number for the unmagnetized one. The typical turbulent and gyromotion terms, representing dissipative effects peculiar to the magnetized system, which contribute to the frequency-dependent transport coefficients are clearly exhibited.

A TWO-FLUID MODEL OF THE SOLAR WIND

1992 ◽  
pp. 95-98
Author(s):  
Ø. Sandbæk ◽  
E. Leer ◽  
T.E. Holzer
Keyword(s):  
Solar Wind ◽  
Fluid Model ◽  
Two Fluid Model ◽  
Two Fluid

Lattice Boltzmann Simulation of Two-Fluid Model Equations

2008 ◽  
Vol 47 (23) ◽  
pp. 9165-9173 ◽  
Author(s):  
Krishnan Sankaranarayanan ◽  
Sankaran Sundaresan
Keyword(s):  
Lattice Boltzmann ◽  
Fluid Model ◽  
Lattice Boltzmann Simulation ◽  
Two Fluid Model ◽  
Model Equations ◽  
Two Fluid

scholarly journals Three-dimensional multi-fluid model of a coronal streamer belt with a tilted magnetic dipole

2015 ◽  
Vol 33 (1) ◽  
pp. 47-53 ◽  
Author(s):  
L. Ofman ◽  
E. Provornikova ◽  
L. Abbo ◽  
S. Giordano
Keyword(s):  
Solar Wind ◽  
Heavy Ions ◽  
Fluid Model ◽  
Slow Solar Wind ◽  
Streamer Belt ◽  
Lower Corona ◽  
Adequate Model ◽  
Coronal Streamer ◽  
Ion Emission ◽  
D Model

Abstract. Observations of streamers in extreme ultraviolet (EUV) emission with SOHO/UVCS show dramatic differences in line profiles and latitudinal variations in heavy ion emission compared to hydrogen Ly-α emission. In order to use ion emission observations of streamers as the diagnostics of the slow solar wind properties, an adequate model of a streamer including heavy ions is required. We extended a previous 2.5-D multi-species magnetohydrodynamics (MHD) model of a coronal streamer to 3-D spherical geometry, and in the first approach we consider a tilted dipole configuration of the solar magnetic field. The aim of the present study is to test the 3-D results by comparing to previous 2.5-D model result for a 3-D case with moderate departure from azimuthal symmetry. The model includes O5+ ions with preferential empirical heating and allows for calculation of their density, velocity and temperature in coronal streamers. We present the first results of our 3-D multi-fluid model showing the parameters of protons, electrons and heavy ions (O5+) at the steady-state solar corona with a tilted steamer belt. We find that the 3-D results are in qualitative agreement with our previous 2.5-D model, and show longitudinal variation in the variables in accordance with the tilted streamer belt structure. Properties of heavy coronal ions obtained from the 3-D model together with EUV spectroscopic observations of streamers will help understanding the 3-D structures of streamers reducing line-of-sight integration ambiguities and identifying the sources of the slow solar wind in the lower corona. This leads to improved understanding of the physics of the slow solar wind.

Two-Fluid Model of the Solar Wind

1966 ◽  
Vol 16 (14) ◽  
pp. 628-631 ◽  
Author(s):  
P. A. Sturrock ◽  
R. E. Hartle
Keyword(s):  
Solar Wind ◽  
Fluid Model ◽  
Two Fluid Model ◽  
Two Fluid
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