Modeling Tools for Environmental Engineers and Scientists Episode 9 ppsx

... cannot be solved explicitly to find the bed length for a desired process performance. Webber and DiGiano ( 199 6) recommended a graphical proce- dure for solving this problem. Further, it would be ... RK4-se, and the custom procedure, “Equation.” By opening the procedure sheet for “Equation,” the governing ODE for this problem is entered in the bottom section, and the parameters...

Ngày tải lên: 13/08/2014, 05:22

... in developing them can best be illustrated by a case history (Nirmalakhandan et al., 199 0, 199 1a, 199 1b, 199 2a, 199 2b, 199 3). Case History: Improvement of the Air-Stripping Process The air-stripping ... Software for Read and Read and Read and Read and Read and Read and Read and developing review review review review review review review mathematical models 8 Modeling...

Ngày tải lên: 13/08/2014, 05:22

... 125, 285–2 89, 199 9. Law, V. J., Johnson, N. L., Oyefodun, A., and Bhattachaya, S. K. Modeling methane emissions from rice soils, Environmental Software, 8, 197 –207, 199 3. Levenspiel, O. ( 197 2) Chemical ... 1063–1075, 198 8. Gottfried, B. S. (2000) Spreadsheet Tools for Engineers, McGraw-Hill Co., New York. Hardisty, J., Taylor, D. M., and Metcalfe, S. E. ( 199 3) Computeris...

Ngày tải lên: 13/08/2014, 05:22

... the modeling effort. Modeling projects may be launched for various reasons, such as those pointed out in Chapter 1. The scope of the modeling effort will be dictated by the objective(s) and the expectation(s). ... by hand calculation; then, the model outputs can be compared against the hand calculations for consistency. For example, Chapter 02 11 /9/ 01 9: 31 AM Page 26 © 2002...

Ngày tải lên: 13/08/2014, 05:22

... foundation. The advantage of reducing the formulations to standard mathematical forms has been pointed out before. For modeling purposes, a wide variety of environmental systems can be categorized ... 11 /9/ 01 11: 09 AM Page 45 © 2002 by CRC Press LLC CHAPTER 3 Primer on Mathematics CHAPTER PREVIEW This chapter contains a review of mathematical methods and tools as they apply to...

Ngày tải lên: 13/08/2014, 05:22

... Modeling Example 9. 6 in Chapter 9 for a computer imple- mentation of the solution process. –36.5 ᎏ m k o J le ᎏ ᎏᎏᎏᎏ 0.008314 ᎏ mo k le J -K ᎏ (25 + 273)K Chapter 04 11 /9/ 01 11:10 AM Page 93 © ... Different Forms of Quantifying Phase Contents and the Resulting Forms of Henry’s Constant Multiplication Factors for Converting to Other Forms Gas Phase Aqueous Phase Content Conte...

Ngày tải lên: 13/08/2014, 05:22

... HRT for Overall One Two Three One Efficiency CMFR CMFRs CMFRs PFR 75% 30.0 20.0 17.6 13 .9 80% 40.0 24.7 21.3 16.1 85% 56.7 31.6 26.5 19. 0 90 % 90 .0 43.2 34.6 23.0 95 % 190 .0 69. 4 51.4 30.0 5.4 MODELING ... ( 197 2), Treybal ( 198 0), Levenspiel ( 197 2), and Weber and DiGiano ( 199 6). 5.2 CLASSIFICATIONS OF REACTORS Reactors can be classified into several different types fo...

Ngày tải lên: 13/08/2014, 05:22

... mechanisms and processes in nat- ural environmental systems and their modeling and analysis: Thomann and Mueller, 198 7; Nemerow, 199 1; James, 199 3; Schnoor, 199 6; Clark, 199 6; Thibodeaux, 199 6; Chapra, ... 199 6; Thibodeaux, 199 6; Chapra, 199 7; Webber and DiGiano, 199 6; Logan, 199 9; Bedient et al., 199 9; Charbeneau, 2000; Fetter, 199 9, to mention just a few. Modelin...

Ngày tải lên: 13/08/2014, 05:22

... Ex 9- 1 Ex 6-3; Ex 6-4; Ex 8-4 Ex 6-5; Ex 8-11; Ex 8-12; Ex 9- 4; Ex 9- 8; Ex 9- 12 MATLAB ® Ex 3-1; Ex 9- 9; § 7.5.4; Ex 8-4 Ex 9- 1 Ex 9- 10 Extend™ § 7.5.6; Ex 8-4 Ex 8-3; Ex 9- 1; Ex 9- 3; Ex 9- 5 ithink ® § ... easy to learn and use, and very fast and powerful for alge- braic operations. Applications of Excel ® in modeling environmental systems have been well docume...

Ngày tải lên: 13/08/2014, 05:22

... velocity in the x direc- tion and σ y and σ z are the horizontal and vertical dispersion coefficients. Chapter 09 11 /9/ 01 9: 37 AM Page 2 89 © 2002 by CRC Press LLC 9. 9 MODELING EXAMPLE: VISUALIZATION ... k 1,3 P 3 Figure 9. 22 Interactions between compartments. Chapter 09 11 /9/ 01 9: 37 AM Page 2 79 © 2002 by CRC Press LLC two- and three-dimensional graphs and animati...

Ngày tải lên: 13/08/2014, 05:22