atmPlantCanopyTSource

Table of Contents

Properties

  • The atmPlantCanopyTSource applies sources on temperature, i.e. T, to incorporate effects of plant canopy for atmospheric boundary layer modelling.
  • The atmPlantCanopyTSource can be applied on any RAS turbulence model.
  • The atmPlantCanopyTSource inherits the traits of the fvOption, and cellSetOption.

Corrections applied to: 

T             | Temperature             [K]

Required fields: 

T             | Temperature                             [K]
qPlant        | Tree-height based specific heat flux    [m2/s3]

Model equations

The model expression:

\[ f_M += \alpha \rho \frac{q_{plant}}{C_{p_0}} \]

where

\( f_M \) = fvMatrix of the temperature field [K/s]
\( q_{plant} \) = Tree-height based specific heat flux [m2/s3]
\( C_{p_0} \) = Specific heat capacity [m2/s2/K]
\( \alpha \) = Phase fraction in multiphase computations, otherwise equals to 1
\( \rho \) = Fluid density in compressible computations, otherwise equals to 1

Usage

Example of the fvOptions specification using constant/fvOptions file: 

atmPlantCanopyTSource1
{
    // Mandatory entries (unmodifiable)
    type                  atmPlantCanopyTSource;

    atmPlantCanopyTSourceCoeffs
    {
        // Mandatory (inherited) entries (unmodifiable)
        selectionMode    all;

        // Optional entries (unmodifiable)
        rho             rho;
        Cp0             1005.0;
    }

    // Optional (inherited) entries
    ...
}

where the entries mean:

Property Description Type Required Default
type Type name: atmPlantCanopyTSource word yes -
rho Name of density field word no rho
Cp0 Specific heat capacity [m2/s2/K] scalar no 1005.0

The inherited entries are elaborated in:

Further information

Tutorials

Source code

History

  • Introduced in version v2006