M5S2 Infiltration Problems PDF
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Uploaded by CureAllPeony
Romblon State University
2020
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Summary
This document contains calculations and problems related to infiltration, including parameters and equations. Calculations are shown step by step. It appears to be an engineering module from a university.
Full Transcript
19/06/2020 Module 5 Infiltration Example We will use this data to estimate PARAMETERS (Philips) 1. Determine the infiltration rate in mm/hr at time step t = 3.0 hr 2. Using Philip's Method, estimate the...
19/06/2020 Module 5 Infiltration Example We will use this data to estimate PARAMETERS (Philips) 1. Determine the infiltration rate in mm/hr at time step t = 3.0 hr 2. Using Philip's Method, estimate the parameter S or sorptivity at t=3hr and its precedent time step. 3. Using Philip's Method, estimate the parameter A or gravity term at t=3hr and its precedent time step. 4. Estimate the infiltration rate in mm/hr using the solved parameter S and A for time t=5min. 5. Estimate the time elapsed in hours using the solved parameter S and A for infiltration rate that approaches zero. 1 19/06/2020 Answer 1. Infiltration rate: time h=3hr =(153-97)/(3.0-2.5) = 112 mm/hr Answer 2. Parameter S f1 = 148 mm/hr f2 = 112 mm/hr t1 = 2.5 hr t2 = 3.0 hr S = 1306.59 mm/hr-1/2 2 19/06/2020 Answer 3. Parameter A f2 = 112 mm/hr t2 = 3.0 hr S = 1306.59 By substitution A = -265.18 mm/hr Answer 4. infiltration rate for time t=5min S = 1306.59 A = -265.18 t = 5/60 hr f = 1997.9 mm/hr 3 19/06/2020 Answer 5. time elapsed for zero infiltration rate. f=0 S = 1306.59 A = -265.18 t = 6.07 hr 4
