Acknowledgements

This work was supported by DOIT, Ministry of Science and Technology under contract No. MOST 106-3113-M-002-006. The authors also wish to acknowledge Professor Toru SATO for the valuable advices and guidance.

Q\_ <sup>H</sup> the rate at which the latent heat is transferred to the CO2 hydrate by dissociation

Direct Numerical Simulation of Hydrate Dissociation in Homogeneous Porous Media by Applying CFD Method…

http://dx.doi.org/10.5772/intechopen.74874

39

xeq solubility of CO2 in the aqueous solution in equilibrium with the stable hydrate

xI mole fraction of CO2 in the aqueous phase at the surface of the hydrate ball [-]

TL temperature at the centroids of a cell in the solid hydrate [K] TH temperature at the centroids of a cell in the aqueous phase [K]

α<sup>L</sup> thermal diffusivity in the aqueous phase m s<sup>2</sup>

α<sup>H</sup> thermal diffusivity in the hydrate ball m s<sup>2</sup>

Δr thickness of the computational cell [m]

Δμ chemical potential difference J mol<sup>1</sup>

r<sup>w</sup> density of the ambient water kg m<sup>3</sup>

VA the molar volume of CO2 m3mol<sup>1</sup>

ν<sup>L</sup> kinematic viscosity of water ms<sup>2</sup>

λ<sup>L</sup> heat conductivity of water W K<sup>1</sup> m<sup>1</sup>

Address all correspondence to: wuyangsean@gmail.com

λ<sup>H</sup> and λ<sup>L</sup> the heat conductivities in the hydrate and water WK<sup>1</sup>

Department of Environmental Engineering, Chung Yuan Christian University, Taiwan

m<sup>1</sup>

η<sup>L</sup> the viscosity of water [mPa s

Author details

Wu-Yang Sean

φ the association parameter for the solvent water

δ thickness of the boundary layer [m]

Jm2s<sup>1</sup>

T absolute temperature [K]

u velocity vectors [m/s]

phase [-]

x mole fraction of CO2 [-]

R gas constant, 8.314 J K<sup>1</sup> mol<sup>1</sup>
