nce.heattransfer

Class HT

java.lang.Object

nce.heattransfer.HT

public abstract class HT
extends java.lang.Object

Utility methods and strings for heat transfer problems

Version:

20160212

Author:

Carlo Tegano

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	ACT_AREA_STAGE
static java.lang.String	BULK_TEMPERATURE Applicable to: Shell, Tube
static java.lang.String	DENSITY Applicable to: Shell, Tube
static java.lang.String	DUTY
static java.lang.String	EMTD
static java.lang.String	FILM_COEFFICIENT
static java.lang.String	FILM_COEFFICIENT_EXT Applicable to: Tube
static java.lang.String	FILM_COEFFICIENT_INT Applicable to: Tube
static java.lang.String	FILM_VISCOSITY Applicable to: Shell, Tube
static java.lang.String	GEOM_AREA_STAGE
static java.lang.String	HEAT_FLUX
static java.lang.String	HT_COEFF_OVERALL Applicable to: Heat exchanger
static java.lang.String	HT_COEFF_OVERALL_CLEAN
static java.lang.String	HT_COEFF_OVERALL_REQ
static java.lang.String	HYDR_DIAMETER Applicable to: Shell, Tube
static java.lang.String	INLET_TEMPERATURE Applicable to: Shell, Tube
static java.lang.String[]	lblsExch
static java.lang.String[]	lblsShell
static java.lang.String[]	lblsTube
static java.lang.String	MASS_FLOW Applicable to: Shell, Tube
static java.lang.String	METAL_TEMPERATURE Applicable to: Shell, Tube
static java.lang.String	MTD
static java.lang.String	NUSSELT Applicable to: Shell, Tube
static java.lang.String	PRANDTL Applicable to: Shell, Tube
static java.lang.String	PRESSURE Applicable to: Shell, Tube
static java.lang.String	REYNOLDS Applicable to: Shell, Tube
static java.lang.String	SKIN_TEMPERATURE Applicable to: Shell, Tube
static java.lang.String	SPEC_ENTHALPY Applicable to: Shell, Tube
static java.lang.String	SPEC_HEAT Applicable to: Shell, Tube
static java.lang.String	THERMAL_CONDUCTIVITY Applicable to: Shell, Tube
static java.lang.String	VELOCITY Applicable to: Shell, Tube
static java.lang.String	VISCOSITY Applicable to: Shell, Tube
static java.lang.String	VOL_FLOW Applicable to: Shell, Tube

Constructor Summary

Constructors

Constructor and Description
HT()

Method Summary

Methods

Modifier and Type	Method and Description
static double	evalGrashoff(double rho, double beta, double mu, double l, double dt, double g) Evaluates Grashoff number: Gr = l^3 * rho^2 * g * beta * dt / mu^2;
static double	evalPrandtl(double cp, double mu, double k) Evaluates Prandtl number: Pr = cp * mu / k
static void	evalPrandtlAtAllSteps(DomainDecomposition d) Evaluates Prandtl number at all grid steps
static void	evalReynoldsAtAllSteps(DomainDecomposition d) Evaluates Reynolds number at all grid steps
static void	evalVolFlowAtAllSteps(DomainDecomposition d) Evaluates volumetric flow at all grid steps

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

INLET_TEMPERATURE

public static final java.lang.String INLET_TEMPERATURE

Applicable to: Shell, Tube

See Also:

Constant Field Values

BULK_TEMPERATURE

public static final java.lang.String BULK_TEMPERATURE

Applicable to: Shell, Tube

See Also:

Constant Field Values

SKIN_TEMPERATURE

public static final java.lang.String SKIN_TEMPERATURE

Applicable to: Shell, Tube

See Also:

Constant Field Values

METAL_TEMPERATURE

public static final java.lang.String METAL_TEMPERATURE

Applicable to: Shell, Tube

See Also:

Constant Field Values

PRESSURE

public static final java.lang.String PRESSURE

Applicable to: Shell, Tube

See Also:

Constant Field Values

THERMAL_CONDUCTIVITY

public static final java.lang.String THERMAL_CONDUCTIVITY

Applicable to: Shell, Tube

See Also:

Constant Field Values

SPEC_HEAT

public static final java.lang.String SPEC_HEAT

Applicable to: Shell, Tube

See Also:

Constant Field Values

DENSITY

public static final java.lang.String DENSITY

Applicable to: Shell, Tube

See Also:

Constant Field Values

VISCOSITY

public static final java.lang.String VISCOSITY

Applicable to: Shell, Tube

See Also:

Constant Field Values

FILM_VISCOSITY

public static final java.lang.String FILM_VISCOSITY

Applicable to: Shell, Tube

See Also:

Constant Field Values

NUSSELT

public static final java.lang.String NUSSELT

Applicable to: Shell, Tube

See Also:

Constant Field Values

REYNOLDS

public static final java.lang.String REYNOLDS

Applicable to: Shell, Tube

See Also:

Constant Field Values

PRANDTL

public static final java.lang.String PRANDTL

Applicable to: Shell, Tube

See Also:

Constant Field Values

FILM_COEFFICIENT

public static final java.lang.String FILM_COEFFICIENT

See Also:

Constant Field Values

FILM_COEFFICIENT_INT

public static final java.lang.String FILM_COEFFICIENT_INT

Applicable to: Tube

See Also:

Constant Field Values

FILM_COEFFICIENT_EXT

public static final java.lang.String FILM_COEFFICIENT_EXT

Applicable to: Tube

See Also:

Constant Field Values

HT_COEFF_OVERALL

public static final java.lang.String HT_COEFF_OVERALL

Applicable to: Heat exchanger

See Also:

Constant Field Values

HT_COEFF_OVERALL_REQ

public static final java.lang.String HT_COEFF_OVERALL_REQ

See Also:

Constant Field Values

HT_COEFF_OVERALL_CLEAN

public static final java.lang.String HT_COEFF_OVERALL_CLEAN

See Also:

Constant Field Values

GEOM_AREA_STAGE

public static final java.lang.String GEOM_AREA_STAGE

See Also:

Constant Field Values

ACT_AREA_STAGE

public static final java.lang.String ACT_AREA_STAGE

See Also:

Constant Field Values

MTD

public static final java.lang.String MTD

See Also:

Constant Field Values

EMTD

public static final java.lang.String EMTD

See Also:

Constant Field Values

VELOCITY

public static final java.lang.String VELOCITY

Applicable to: Shell, Tube

See Also:

Constant Field Values

MASS_FLOW

public static final java.lang.String MASS_FLOW

Applicable to: Shell, Tube

See Also:

Constant Field Values

VOL_FLOW

public static final java.lang.String VOL_FLOW

Applicable to: Shell, Tube

See Also:

Constant Field Values

HYDR_DIAMETER

public static final java.lang.String HYDR_DIAMETER

Applicable to: Shell, Tube

See Also:

Constant Field Values

SPEC_ENTHALPY

public static final java.lang.String SPEC_ENTHALPY

Applicable to: Shell, Tube

See Also:

Constant Field Values

DUTY

public static final java.lang.String DUTY

See Also:

Constant Field Values

HEAT_FLUX

public static final java.lang.String HEAT_FLUX

See Also:

Constant Field Values

lblsShell

public static final java.lang.String[] lblsShell

lblsTube

public static final java.lang.String[] lblsTube

lblsExch

public static final java.lang.String[] lblsExch

Constructor Detail

HT

public HT()

Method Detail

evalPrandtlAtAllSteps

public static void evalPrandtlAtAllSteps(DomainDecomposition d)

Evaluates Prandtl number at all grid steps

Parameters:

d - the domain decomposition grid

evalVolFlowAtAllSteps

public static void evalVolFlowAtAllSteps(DomainDecomposition d)

Evaluates volumetric flow at all grid steps

Parameters:

d - the domain decomposition grid

evalReynoldsAtAllSteps

public static void evalReynoldsAtAllSteps(DomainDecomposition d)

Evaluates Reynolds number at all grid steps

Parameters:

d - the domain decomposition grid

evalGrashoff

public static double evalGrashoff(double rho,
                  double beta,
                  double mu,
                  double l,
                  double dt,
                  double g)

Evaluates Grashoff number: Gr = l^3 * rho^2 * g * beta * dt / mu^2;

Parameters:

rho - density [kg/m3]

beta - volume expansion coefficient [K^1]

mu - viscosity [Pa s]

l - characteristic length [m]

dt - temperature difference [K]

g - gravity acceleration [m/s^2]

Returns:

Grashoff number

evalPrandtl

public static double evalPrandtl(double cp,
                 double mu,
                 double k)

Evaluates Prandtl number: Pr = cp * mu / k

Parameters:

cp - specific heat [J/kg K]

mu - viscosity [Pa s]

k - conductivity [W/m K]

Returns:

Prandtl number