Question: Please Use MATLAB to solve. (from Numerical Methods for Engineers 7th edition) 28.21 An environmental engineer is interested in estimating the mixing that occurs between
Please Use MATLAB to solve. (from Numerical Methods for Engineers 7th edition)


28.21 An environmental engineer is interested in estimating the mixing that occurs between a stratified lake and an adjacent em- bayment (Fig. P28.21). A conservative tracer is instantaneously mixed with the bay water, and then the tracer concentration is monitored over the ensuing period in all three segments. The val- ues are 1 12 16 20 0 0 0 100 2 15 3 48 4 11 5 26 6 7 7 16 8 6 7 10 C2 C3 4 3 2 FIGURE P28.21 Bay (3) Upper layer (1) Lower layer (2) Using mass balances, the system can be modeled as the following simultaneous ODES: = -QC + E126C2-C) + E13(C3 - C) event = E2( cz) V. Caci = E13(c cz) where Vi = volume of segment i, Q = flow, and Ej = diffusive mixing rate between segments i and j. Use the data and the differ- ential equations to estimate the E's if V, = 1 X 107, V2 = 8 X 100, Vz = 5 x 10, and Q = 4 x 10. Employ Euler's method with a step size of 0.1 for your analysis
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