Titre de série :	Irrigation Science
Titre :	A quasi-steady state integral model for border irrigation
Type de document :	texte imprimé
Auteurs :	Ram, R. S. ; Singh, V. P. ; Prasad, S. N.
Année de publication :	1986
ISBN/ISSN/EAN :	CI-11682
Note générale :	A quasi-steady state integral (QSSI) model is developed for irrigation on freely draining borders. A semi-analytical method is used for solving the governing equations. The model results compared favorably with experimental data from 13 experimental borders for advance and from 4 experimental borders for recession. The absolute average percent deviation (APD) between calculated and observed advance time varied between 13.1 and 26.6 for data sets and between 9.2 and 18.8 for 9 data sets. The APD for recession times varied between 1.7 and 5.7 for 4 data sets/ The calculed advance time are smaller than observed values for these borders. For constant infiltration parameters, the borders bed roughness is found to be the single most important parameter affecting model results.
Langues :	Anglais (eng)
Mots-clés :	Irrigation  Drainage  Eau de surface  Calcul  Modèle mathématique  Expérimentation  Infiltration  Modèle hydrodynamique  Equation
Index. décimale :	631.58 Méthodes de culture : jachère, assolement irrigation
Résumé :	A quasi-steady state integral (QSSI) model is developed for irrigation on freely draining borders. A semi-analytical method is used for solving the governing equations. The model results compared favorably with experimental data from 13 experimental borders for advance and from 4 experimental borders for recession. The absolute average percent deviation (APD) between calculated and observed advance time varied between 13.1 and 26.6 for data sets and between 9.2 and 18.8 for 9 data sets. The APD for recession times varied between 1.7 and 5.7 for 4 data sets/ The calculed advance time are smaller than observed values for these borders. For constant infiltration parameters, the borders bed roughness is found to be the single most important parameter affecting model results.
Note de contenu :	A quasi-steady state integral (QSSI) model is developed for irrigation on freely draining borders. A semi-analytical method is used for solving the governing equations. The model results compared favorably with experimental data from 13 experimental borders for advance and from 4 experimental borders for recession. The absolute average percent deviation (APD) between calculated and observed advance time varied between 13.1 and 26.6 for data sets and between 9.2 and 18.8 for 9 data sets. The APD for recession times varied between 1.7 and 5.7 for 4 data sets/ The calculed advance time are smaller than observed values for these borders. For constant infiltration parameters, the borders bed roughness is found to be the single most important parameter affecting model results.

Irrigation Science. A quasi-steady state integral model for border irrigation [texte imprimé] / Ram, R. S. ; Singh, V. P. ; Prasad, S. N. . - 1986.
ISSN : CI-11682
A quasi-steady state integral (QSSI) model is developed for irrigation on freely draining borders. A semi-analytical method is used for solving the governing equations. The model results compared favorably with experimental data from 13 experimental borders for advance and from 4 experimental borders for recession. The absolute average percent deviation (APD) between calculated and observed advance time varied between 13.1 and 26.6 for data sets and between 9.2 and 18.8 for 9 data sets. The APD for recession times varied between 1.7 and 5.7 for 4 data sets/ The calculed advance time are smaller than observed values for these borders. For constant infiltration parameters, the borders bed roughness is found to be the single most important parameter affecting model results.
Langues : Anglais (eng)

Mots-clés :	Irrigation  Drainage  Eau de surface  Calcul  Modèle mathématique  Expérimentation  Infiltration  Modèle hydrodynamique  Equation
Index. décimale :	631.58 Méthodes de culture : jachère, assolement irrigation
Résumé :	A quasi-steady state integral (QSSI) model is developed for irrigation on freely draining borders. A semi-analytical method is used for solving the governing equations. The model results compared favorably with experimental data from 13 experimental borders for advance and from 4 experimental borders for recession. The absolute average percent deviation (APD) between calculated and observed advance time varied between 13.1 and 26.6 for data sets and between 9.2 and 18.8 for 9 data sets. The APD for recession times varied between 1.7 and 5.7 for 4 data sets/ The calculed advance time are smaller than observed values for these borders. For constant infiltration parameters, the borders bed roughness is found to be the single most important parameter affecting model results.
Note de contenu :	A quasi-steady state integral (QSSI) model is developed for irrigation on freely draining borders. A semi-analytical method is used for solving the governing equations. The model results compared favorably with experimental data from 13 experimental borders for advance and from 4 experimental borders for recession. The absolute average percent deviation (APD) between calculated and observed advance time varied between 13.1 and 26.6 for data sets and between 9.2 and 18.8 for 9 data sets. The APD for recession times varied between 1.7 and 5.7 for 4 data sets/ The calculed advance time are smaller than observed values for these borders. For constant infiltration parameters, the borders bed roughness is found to be the single most important parameter affecting model results.