Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Numerical simulations for the evaluation of the free surface history in porous media. Comparison between two different approaches |
| Abstract | This paper shows an empirical comparison of two different models for the theoretical analysis of the zero pressure surface position during the imbibition of a partially saturated porous medium: the model based on the unsaturatedsaturated approach, and the model which describes the zero pressure surface as a free external boundary for the fully saturated zone. A domain FD technique is applied for solving the governing equations of the first model, whereas a BEM formulation has been chosen for the equations of the second one. The comparison is based on numerical experiments which deal with the imbibition of an academic system. The results obtained highlight the tendency of the fully saturated approximation to provide solutions where the rise of the free surface is much more localized near the injection zone than in the case of the unsaturatedsaturated approach. In addition, owing to the capability of describing the capillary fringe, these latter solutions affect thicker layers of porous matrix. So, the users have to consider the system of interest with the greatest care before they choose the mathematical model which is the most suitable for the aims of the planned simulation. |
| Source | Advances in engineering software (1992) 21, pp. 149–157 |
| Journal | Advances in engineering software (1992) |
| Editor | Elsevier Applied Science., Barking, Regno Unito |
| Year | 1994 |
| Type | Articolo in rivista |
| DOI | 10.1016/0965-9978(94)90017-5 |
| Authors | Masciopinto C., Passarella G., Vurro M., Castellano L. |
| Text | 212555 1994 10.1016/0965 9978 94 90017 5 ISI Web of Science WOS A1994QV63800002 Scopus 2 s2.0 0028749305 Numerical simulations for the evaluation of the free surface history in porous media. Comparison between two different approaches Masciopinto C., Passarella G., Vurro M., Castellano L. C. Masciopinto, G. Passarella, M. Vurro Experimental Laboratory, National Council of Research, Water Research Institute, Via F. De Blasio 5, Zona Ind., 70123, Bari, Italy L. Castellano Matec/Modelli Matematici, Via Rondoni 11, 20141 Milan, Italy This paper shows an empirical comparison of two different models for the theoretical analysis of the zero pressure surface position during the imbibition of a partially saturated porous medium the model based on the unsaturatedsaturated approach, and the model which describes the zero pressure surface as a free external boundary for the fully saturated zone. A domain FD technique is applied for solving the governing equations of the first model, whereas a BEM formulation has been chosen for the equations of the second one. The comparison is based on numerical experiments which deal with the imbibition of an academic system. The results obtained highlight the tendency of the fully saturated approximation to provide solutions where the rise of the free surface is much more localized near the injection zone than in the case of the unsaturatedsaturated approach. In addition, owing to the capability of describing the capillary fringe, these latter solutions affect thicker layers of porous matrix. So, the users have to consider the system of interest with the greatest care before they choose the mathematical model which is the most suitable for the aims of the planned simulation. 21 http //www.sciencedirect.com/science/article/pii/0965997894900175 Articolo su rivista internazionale con IF Received 5 April 1994; revised version received 26 October 1994; accepted 1 November 1994 Numerical simulations for the evaluation of the free surface history in porous media. Comparison between two different approaches Articolo su rivista internazionale con IF Received 5 April 1994; revised version received 26 October 1994; accepted 1 November 1994 INT_Articolo_in_Rivista_J_01.pdf Articolo in rivista Elsevier Applied Science. 0965 9978 Advances in engineering software 1992 Advances in engineering software 1992 Adv. eng. softw. 1992 Advances in engineering software 1992 giuseppe.passarella PASSARELLA GIUSEPPE michele.vurro VURRO MICHELE costantino.masciopinto MASCIOPINTO COSTANTINO TA.P04.005.008 Integrazione di metodologie per il monitoraggio e la modellizzazione per la gestione delle risorse idriche |