Coupled heat and mass transport material model - HeMotk

Coupled heat and mass transfer material model. Source: T. Krejci doctoral thesis; Bazant and Najjar, 1972; Pedersen, 1990. Assumptions: water vapor is the only driving mechanism; relative humidity is from range 0.2 - 0.98 (I and II regions). The model parameters are summarized in Tab. 58.

Table 58: Coupled heat and mass transfer material model - summary.
Description Coupled heat and mass transfer material model
Record Format HeMotk num(in) # d(rn) # a_0(rn) # nn(rn) # phi_c(rn) # delta_wet(rn) # w_h(rn) # n(rn) # a(rn) # latent(rn) # c(rn) # rho(rn) # chi_eff(rn) # por(rn) # rho_gws(rn) #
Parameters - num material model number
  - d, rho material density
  - a_0 constant (obtained from experiments) a_0 [Bazant and Najjar, 1972]
  - nn constant-exponent (obtained from experiments) n [Bazant and Najjar, 1972]
  - phi_c constant-relative humidity (obtained from experiments) phi_c [Bazant and Najjar, 1972]
  - delta_wet constant-water vapor permeability (obtained from experiments) delta_wet [Bazant and Najjar, 1972]
  - w_h constant water content (obtained from experiments) w_h [Pedersen, 1990]
  - n constant-exponent (obtained from experiments) n [Pedersen, 1990]
  - a constant (obtained from experiments) A [Pedersen, 1990]
  - latent latent heat of evaporation
  - c thermal capacity
  - chi_eff effective thermal conductivity
  - por porosity
  - rho_gws saturation volume density
Supported modes _2dHeMo


Borek Patzak
2018-01-02