| |
|
Concept:
sorption process: mathematical model
Equations and analysis
The transfer of moisture within the wood can be described by the second FickĄ¯s law.
1. Constant diffusivity i.e. diffusion coefficient D is constant.
2. Moisture is transferred through the transverse direction.
3. Moisture gradient as a driving force of moisture movement.
4. Newmann's boundary condition is applied in this study; i.e. the rate at which moisture is emitted through the wall surface at any time is equal to the rate at which moisture diffuses from the interior to the surface or vice versa.
| | | Related References | | |
- --------
- ANN approach to sorption hysteresis within a coupled hygro-thermo-mechanical FE analysis, by Gawin, D., Le, M., and Schrefler, B. A., 2001
- ASTM sorption isotherm
- C1498-01 standard test method for hygroscopic sorption isotherms of building materials, by ASTM, 2001
- --------
- Determination of the moisture capacity of porous building materials , by Carmeliet, J. and Roels, S., 2002
- history of
- Empirical validation of a transient computer model for combined heat and moisture transfer, by Rode, C. and Burch, D.M, 1995
- detail math formular for sorption process
- Mathematical modelling of sorption processes in timber based on numerical analysis mathematical modelling, by Dai, G. and Ahmet, K., 1999
- --------
- Microscopic analysis of imbibition processes in oolitic limestone, by Roels, S., Carmeliet, J., Hens, H. and Elsen, J., 2000
- data for 100+ materials
- Sorption isotherms: a catalog and a data base, by Hansen, K. K., 1996
- --------
- Transport and sorption phenomena in concrete and other porous media, by Johannesson, B., 2000
- measurement of sorption for common building materials
- Water vapor sorption measurements of common building materials, by Richards, R.F., D.M. Burch and W.C. Thomas, 1992
|
|