Wall Radiative Heat Flux

Qrad

[W m^-2]

2,B

DT, R, TS

Wall Radiative Heat Flux represents the net radiative energy flux leaving the boundary. It is computed as the difference between the radiative emission and the incoming radiative flux (Wall Irradiation Flux).

Wall Heat Flux

Qwall

[W m^-2]

2,B

C, DT, R, TS

Wall Heat Flux is sum of the Wall Radiative Heat Flux and the Wall Convective Heat Flux. For an adiabatic wall, the sum should be zero.

Wall Irradiation Flux

irrad

[W m^-2]

2,B

C, DT, R, TS

Wall Irradiation Flux represents the incoming radiative flux. It is computed as the solid angle integral of the incoming Radiative Intensity over a hemisphere on the boundary. For simulations using the multiband model, the Wall Irradiation Flux for each spectral band is also available for postprocessing.

Radiation Intensity

radint

[W m^-2 sr^-1]

RA, R, A, M, C, P, TS

Radiation Intensity represents the radiative energy flow (in units of energy per time) per unit solid angle (solid angle of the outgoing or incoming radiation, measured in steradians) and per unit area (area of a surface that is normal to the ray direction).

Wall Absorbed Radiation Flux

sabsor

[W m^-2]

2,B

DT, R, TS

Wall Absorbed Radiation Flux represents the absorbed heat flux due to radiation, and is computed as Wall Radiative Heat Flux minus reflection and emission.

Incident Radiation

radinc

[kg s^-3]

1

C, DT, M, R, TS

The integral of Radiation Intensity over a full sphere of unit radius. For isotropic radiation, it is a factor of greater than the Radiation Intensity.

Absorption Coefficient

absorp

[m^-1]

1

C, M, R, TS

Scattering Coefficient

scatter

[m^-1]

1

C, M, R, TS

Refractive Index

refrac

[ ]

1

C, R, TS

Radiative Emission

rademis

[kg s^-3]

1

RA

Extinction Coefficient

extinct

[m^-1]

1

C

Emissivity

emis

[ ]

1

C