The University of Texas at El Paso

Modeling Ground Water and Contamination Transport Using Lab Experiment-S11 Ground Water Flow

and Well Abstraction

By:Timothy Engle

Abdusalam Agail

Experiment -1Modeling Contamination Transport Using

Lab Experiment-S11 Ground Water Flow and Well Abstraction Model

Time:1:55 pm

Time:1:55 pm

Time:1:56 pm

Time:2:03 pm

Results length 99 cmwidth 49 cmheight 10 cmarea 490 cm^2Qref 0.05 L/s

50 cm^3/sdh 1.5 cm

#1&2dl 12.5 cm

hydraulic -0.8296 cm/sconductivit

y -0.68 cm/sdelta X 3 cm

A 30 cm^2t for 1L 20.5 sQwell 2.926829 L/min

0.04878 L/s48.78049 cm^3/s

ΔXQ/4KA -1.7934porosity 0.343088K/ΔXφ 0.806013est H 14 cm

piezometer H measured H predict SSQ1 12 cm 12.65451 0.428388 19.68557 27.843942 10.5 cm 10.85928 0.129079 8.625042 12.120823 10 cm 9.959885 0.001609 5.938199 6.6672794 9.5 cm 9.523217 0.000539 3.751357 4.6029095 9.4 cm 9.513731 0.012935 3.373989 4.5622956 9.4 cm 9.509735 0.012042 3.373989 4.5452437 10.9 cm 9.51134 1.928375 11.13452 4.552098 9.6 cm 9.513731 0.007442 4.148726 4.5622959 9.7 cm 9.523217 0.031252 4.566094 4.60290910 9.5 cm 9.057324 0.195962 3.751357 2.82087711 9 cm 8.6038 0.156975 2.064515 1.5031312 8.3 cm 8.147772 0.023173 0.542936 0.59289113 6.8 cm 6.748483 0.002654 0.58241 0.39601214 4.9 cm 4.598022 0.091191 7.09241 7.72704215 3.5 cm 3.857644 0.12791 16.50925 12.3913416 2.5 cm 2.798069 0.088845 25.63557 20.9737317 1.8 cm 2.349334 0.301768 33.21399 25.2852518 2.9 cm 3.251574 0.123604 21.74504 17.0255619 3.5 cm 3.602735 0.010554 16.50925 14.25095ave 7.563158 3.674297 192.2442 172.4745

ave w/o 7 7.377778 2

time s min L dhformula 1 153.6183 2.560304 59 11.43294

t=(α*L^2)/(K*dh)formula 2

t=(α*L*A)/Q 203.3328 3.38888

Results Steady State

2D model

Vy

Velocity (Vx direction) Velocity (Vy direction)

Pizometers Actual Vs Predicted

Contour Map shows Predicted Pizometers in unconfined aquifer (sand tank) Experiment

Legend:

Contamination spot Source Well Location (Output) Actual Time = 2.56 Minute

Modeled Time (Equation-1) = 2.56 min Modeled Time (Equation-2) = 3.38 min

Experiment -2Adding a Barrier to the

Modeling Contamination Transport

Results length 99cmwidth 49cmheight 10cmarea 490cm^2Qref 0.05L/s

50cm^3/sdh 1.5cm

#1&2dl 12.5cmhydraulic -0.53973cm/sconductivity -0.68cm/sdelta X 3cmA 30cm^2t for 1L 31.51sQwell 1.904157L/min

0.031736L/s31.73596cm^3/s

ΔXQ/4KA -1.16676porosity 0.343088K/ΔXφ 0.524382est H 14cm

piezometer H measured H predict SSQ1 12 cm 12.94763 0.897995 9 8.4155642 11.4 cm 11.54553 0.02118 5.76 2.2466023 10.8 cm 10.84601 0.002117 3.24 0.6389444 10.5 cm 10.48657 0.00018 2.25 0.1935185 10.5 cm 10.49425 3.31E-05 2.25 0.200336 10.5 cm 10.49704 8.75E-06 2.25 0.2028387 10.6 cm 10.49447 0.011137 2.56 0.2005278 10.6 cm 10.49213 0.011637 2.56 0.1984359 10.6 cm 10.48369 0.013527 2.56 0.190993

10 10.4 cm 10.14922 0.062893 1.96 0.01051611 10 cm 9.802775 0.038898 1 0.05948312 9.8 cm 9.458538 0.116597 0.64 0.34589613 9 cm 8.454165 0.297936 0 2.53606114 8 cm 7.392958 0.368501 1 7.04217215 6 cm 7.307806 1.710357 9 7.50135716 4.2 cm -4.11971 69.21753 23.0417 4.3 cm -2.3769 44.58104 22.0918 5.4 cm 0.786116 21.28793 12.9619 6.4 cm 2.760438 13.24642 6.76ave 9 151.8859 110.88 29.98324

ave w/o 10.04667 416-19

time s min L dhformula 1 134.8115 2.246859 67.68309 17.1447

t=(α*L^2)/(K*dh)formula 2

t=(α*L*A)/Q 358.5338 5.975564

Results

Results

Pizometers Actual Vs Predicted

Contour Map shows Predicted Pizometers in unconfined aquifer

with a Barrier around the well

Contamination Transport Direction

Legend:

Contamination spot Source Well Location (Output) Actual Time = 6 Minute

Modeled Time (Equation-1) = 2.24 Min Modeled Time (Equation-2) = 5.97 Min