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<br />TABLE OF CONTENTS <br /> <br />Chapter <br /> <br />Page <br /> <br />INTRODUCTION <br /> <br />LITERATURE REVIEW <br /> <br />3 <br /> <br />Early Concepts on Infiltration and Mel.:hanisrn <br />Factors Affecting Infiltration. <br /> <br />3 <br />3 <br /> <br />Effect of antecedent moisture <br />Effect of soil texture and structure <br />Effect of frost, , <br />Effect of plant cover <br />Effect of rainfall, , <br />Effect of soil-surface slope. <br /> <br />4 <br />4 <br />6 <br />6 <br />8 <br />8 <br /> <br />Infiltra tion Characteristics <br /> <br />Soil , , , , , , <br />Cover . . . . . <br />Antecedent soil moisture <br /> <br />9 <br />10 <br />10 <br /> <br />Infiltration Modeling <br /> <br />10 <br /> <br />BOUNDARY.VALUE PROBLEM OF RAIN INFILTRATION AND ITS <br />NUMERICAL SOlLUTIONS , , , <br /> <br />13 <br /> <br />Idealized Rain Infiltration Problem, <br />Mathematical Statement of the Problem <br />Numerical Model, , . , , , , <br /> <br />14 <br />15 <br />18 <br /> <br />For grid points other than i = I <br />For grid point i = I with j .;; n <br />For gird points in the saturated zone <br />Soil properties "'CO) and K(O) relationships <br /> <br />20 <br />21 <br />21 <br />22 <br /> <br />Computer Results <br /> <br />22 <br /> <br />Effect of space-step size (L>z) , 25 <br />Effect of initial moisture content (00) 26 <br />Effect of ponding depth (h) , , . ' 27 <br />Combined effect of rainfall intensity (r) and space-step size (L>z) 27 <br /> <br />PARAMETRIC MODELS OF RAIN INFILTRATION 31 <br /> <br />Formulation of Parametric InfIltration Models 32 <br /> <br />The Green-Ampt equation, 32 <br />The Kostiakov equation 35 <br /> <br />vii <br />