Heat air and moisture development

This application is still in development (and don’t run yet). It has more features than feelpp_hm_heat_moisture, but is (for now) incompatible with it.

1. Usage

feelpp_hm_heat_moisture_2d --case <directory to model case> --mod-file <path to json file>

feelpp_hm_heat_moisture_3d --case <directory to model case> --mod-file <path to json file>

depending in which dimension the simulation is made.

2. Geometry

To make this application work correctly, there are some constraints on the geometry :

If we want to simulate in the room, at least one marker has to be named Air.

3. JSON file

{
    "Name":"model_name",           (1)
    "Models":
    {
        "heat":{},
        "moisture":{}
    },
    "Parameters":
    {
        "L_v":2.5e6,                (2)
        ...
    },
    "Materials":
    {
        "Omega_w":                  (3)
        {
            "physics":["heat"],     (4)
            "markers":["Wall"],     (5)
            "rho_m":650,            (6)
            ...
        },
        "Omega_r":                  (7)
        {
            ...
        }
    },
    "BoundaryConditions":
    {
        "T":                        (8)
        {
            "wall-int":             (9)
            {
                "Gamma_i":          (10)
                {
                    "expr":0        (11)
                }
            },
            "wall-ext":             (12)
            {
                "Gamma_e":
                {
                    "expr":0
                }
            }
        }
    },
    "InitialConditons":             (13)
    {
        "T":
        {
            "Expression":
            {
                "Omega_w":
                {
                    "expr":293.15
                },
                "Air":
                {
                    "expr":293.15
                }
            }
        }
    },
    "PostProcess":                  (14)
    {
        "Exports":
        {
            "fields":["T","phi","w"]
        }
    }
}

1	Name of the model,
2	Parameters of the model. For HAM simulation those parameters are `L_v`, `h_i`, `h_e`, `h_m`, `h_mi`, `h_me`, `T_e`, `w_e`, `H`
3	Material associated to the room : the name has to be `Omega_w`
4	Physics of the material, can be `heat`, `moisture` or `heat-moisture` depending on what we want to simulate
5	Markers where the physic is applied
6	Parameters implied in the physic : In the wall, those parameters are : `rho_mCp_m`, `k`, `xi`, `D_w`, `delta_p`, `p_sat` In the room, those parameters are : `eta`, `rho_aCp_a`, `A_w`, `V_a`, `m_gen`
7	Material associated to the air : the name has to be `Omega_r`
8	Field on which the boundary condition is applied, can be `T` or `phi`
9	Boundary conditions on the border between the room and the wall (named \(\Gamma_i\) in the description), the name of such a condition is `wall-int`
10	Markers of the geometry on where the condition is applied
11	Expression, not used in the program
12	Boundary conditions on the border between the room and the exterior (called \(\Gamma_e\) in the description), the name is `wall-ext`
13	Initial conditions
14	Post process section

Here is a table of the name of the coefficients, and to which model they are associated :

Parameters: Those values have to be in the Parameters section.

Table 1. Parameters used in the application
Name	Symbol	Equation
\(L_v\)	`L_v`	moisture
\(h_i\), \(h_e\), \(h_m\),	`h_i`, `h_e`, `h_m`	heat
\(h_{mi}\), \(h_{me}\)	`h_mi`, `h_me`	heat
\(H\)	`H`	heat
\(T_e\)	`T_e`	heat
\(w_e\)	`w_e`	moisture

Coefficients: Those values have to be in the Materials section

Table 2. Coefficients used in the application
Name	Symbol	Equation
\(\rho_mc_m\), \(\rho_ac_a\)	`rho_mCp_m`, `rho_aCp_a`	heat
\(k\)	`k`	heat
\(w\)	`w`	moisture
\(\xi\)	`xi`	moisture
\(\eta\)	`eta`	heat, moisture
\(A_w\)	`A_w`	heat, moisture
\(V_a\)	`V_a`	heat, moisture
\(\dot{m}_\text{gen}\)	`m_gen`	moisture