Class ssfd.ExpTauE 
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Class ssfd.ExpTauE 

java.lang.Object
   |
   +----ssfd.ExpTauE
public class ExpTauE
extends Object
Uses a standard power law expression for the energy confinement time. The exponents are specified at instantiation. The resulting expression can then be evaluated for when a set of global plasma parameters is provided. There is also a User's Manual for the full-featured FORTRAN code upon which this code is based. The corresponding equation numbers are mentioned in the code below.
Version:
1.0 02-12-97
Author:
Daren Stotler

Constructor Index

o ExpTauE(double, double, double, double, double, double, double, double, double)
Defines a scaling expression for the energy confinement time.

Method Index

o calcExpTauE(double, double, double, double, double, double, double, double)
Evaluate the scaling expression for the energy confinement time.

Constructors

o ExpTauE 
  public ExpTauE(double constant,
                 double mass_exp,
                 double elongation_exp,
                 double current_exp,
                 double density_exp,
                 double bfield_exp,
                 double rminor_exp,
                 double rmajor_exp,
                 double pinput_exp)
Defines a scaling expression for the energy confinement time.
Parameters:
const - overall multiplicative constant
massExp - exponent on the average ion mass
elongationExp - exponent on the plasma elongation
currentExp - exponent on the plasma current
densityExp - exponent on the line-averaged electron density
bfieldExp - exponent on the toroidal magnetic field
rminorExp - exponent on the plasma minor radius
rmajorExp - exponent on the plasma major radius
pinputExp - exponent on the net plasma input power

Methods

o calcExpTauE 
  public double calcExpTauE(double aibar,
                            double elongation,
                            double current,
                            double density,
                            double bfield,
                            double rminor,
                            double rmajor,
                            double pinput)
Evaluate the scaling expression for the energy confinement time.
Parameters:
aibar - average ion mass (amu)
elongation - the plasma elongation (dimensionless)
current - plasma current (in amps)
density - line-averaged electron density (in m**-3)
bfield - toroidal magnetic field (in tesla)
rminor - plasma minor radius (in m)
rmajor - plasma major radius (in m)
pinput - net input power to the plasma (in watts)
Returns:
energy confinement time in seconds 
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