gov.nist.microanalysis.EPQLibrary
Class GasMixture

java.lang.Object
  gov.nist.microanalysis.EPQLibrary.Composition
      gov.nist.microanalysis.EPQLibrary.Material
          gov.nist.microanalysis.EPQLibrary.GasMixture

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.lang.Comparable

public class GasMixture
extends Material

A GasMixture is a Material constructed from one or more Gases. The gases are assume to occupy the same volume and to obey the ideal gas law.

See Also:

Serialized Form

Field Summary

Fields inherited from class gov.nist.microanalysis.EPQLibrary.Composition

mHashCode, STOICIOMETRY, UNDETERMINED, WEIGHT_PCT

Constructor Summary

GasMixture(Gas[] gases, double temp, java.lang.String name)
Create a gas mixture from its constituent gases.

Method Summary

static GasMixture	createAir(double pressure, double temperature) createAir - Creates a gas with nominally the same composition as the air we breath.
double	getPressure() getPressure - returns the pressure (in pascal)
double	getTemperature() getTemperature - Returns the temperature (in kelvin)
void	setTemperature(double newTemp) setTemperature - Modifies the temperature of the gas and updates the pressure assuming constant volume.

Methods inherited from class gov.nist.microanalysis.EPQLibrary.Material

atomsPerCubicMeter, clear, clone, compareTo, defineByMaterialFraction, defineByWeightFraction, descriptiveString, equals, getDensity, hashCode, renormalize, replicate, setDensity

Methods inherited from class gov.nist.microanalysis.EPQLibrary.Composition

addElement, addElement, addElementByStoiciometry, containsElement, defineByMoleFraction, defineByWeightFraction, defineByWeightFraction, difference, elementSet, fromXML, getElementCount, getElementSet, getName, getNthElementByAtomicFraction, getNthElementByWeight, getOptimalRepresentation, massAbsorptionCoefficient, moleFraction, removeElement, replicate, setName, stoiciometryAvgAtomicNumber, sumWeightPercent, toString, toXML, weightAvgAtomicNumber, weightPercent

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

GasMixture

public GasMixture(Gas[] gases,
                  double temp,
                  java.lang.String name)

Create a gas mixture from its constituent gases. The gases are first brought to a common temperature and then summed. The total pressure of the gas is the sum of the partial pressures. For example, air is 78.084% N2, 20.947% O2, 0.934% Ar, 0.033% CO2 and trace other elements (by volume). Create each gas independently using Gas(Element[],int[],double,double,String) then sum them together.

Parameters:

gases - A list of constituent gases

temp - The common temperature in kelvin

name - The human friendly name for the gas

Method Detail

setTemperature

public void setTemperature(double newTemp)

setTemperature - Modifies the temperature of the gas and updates the pressure assuming constant volume.

Parameters:

newTemp - In kelvin

getTemperature

public double getTemperature()

getTemperature - Returns the temperature (in kelvin)

Returns:

The temperature in kelvin

getPressure

public double getPressure()

getPressure - returns the pressure (in pascal)

Returns:

The pressure in pascal

createAir

public static GasMixture createAir(double pressure,
                                   double temperature)

createAir - Creates a gas with nominally the same composition as the air we breath.

Parameters:

pressure -

temperature -

Returns:

An instance of GasMixture