## Computational Methods for Electromagnetic Phenomena:

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Degradation of toxic chemicals using genetically-engineered microorganisms. Then from Eq. 19.4-35 we get which gives the rate of production of carbon dioxide at the catalytic surface. Other students who wish to take departmental courses must meet the prerequisites and obtain instructor approval (except for CHEM E 485 and CHEM E 486, which are open to majors only). If a fluid were to flow in such tubes in laminar flow.e. time) and then solving a set of relations to obtain the pertinent dimensionless group (7). note that if frictional heating [equation (3-7)] is equated to equation (3-17). 0009144 0. an additional dimensionless group E / Dbecomes important.000259 1 0.

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Thermal conductivity of chlorine-air mixtures. Using Eq. 9.3-17, predict thermal conductivities of chlo- rine-air mixtures at 297K and 1 atm for the following mole fractions of chlorine: 0.25, 0.50, 0.75. A sphere made of an experimental material is to be processed in a twostep operation.15 x lop4 m2/sec. and slab all had the same value of the abscissa in Figures 5-3.2-m diameter) are to be cooled from their initial temperature of 400°C by air at -15°C in a cooling chamber equipped with a conveyer belt. and 5-5.

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Estimation of the required length of an isothermal reactor (Fig. 18.3-1). The criterion for scale-up should be clearly stated. Energy balances and combined energy-material balances. Water flows out of an opening in the tank bottom. The plus sign indicates that the heat flow is radially out from the center. Illustrative examples on each of these topics are included within each chapter. The mechanism of this technology is still unknown but is based on the synergism of acoustic cavitation bubbles that facilitate and sustain the plasma formation.

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These events were far removed from the early days of the profession, when the possibility of eliminating most mathematical courses was strongly considered. However, they never found a formula that worked well enough and could be produced in large enough quantities. In obtaining Eq. 19.1-8 we had to use Eq. (J) of Table 17.8-1 and also the fact that the law of conservation of total mass gives Car, = 0. Loss of power to cooling tower fans or water pumps could have serious consequences in the operation of the refinery.

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Very small particles are subject to Brownian motion, whereby collisions between the particles and fluid molecules result in the particles following random paths. To see this. at point 4 we see the other interface between the two fluids: Finally at point 5 we see that Or if R. The velocity profile is fully estabhshed when the fluid enters the heat transfer section of the tube. 5. Now that we have learned how to solve for the detailed velocity fields for at least one class of flow problems (creeping/viscous flows), we turn to a general introduction to convection effects for heat transfer (primarily) for this class of flows.

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What is the pressure drop through the bed? This cooperation would build the ammonia plants that produced the explosives (and fertilizers) that helped win the war (see NITROGEN: FOOD OR FLAMES ). Faced with this challenge, how could the technological know-how concerning one set of chemicals be transferred to a new set? Future planes include the study of the progress of chemical reactions, and the simulation of multiphase flow behavior in micro-pores and micro-channels.

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Differentiation of Eq. 4.3-10 with respect to x and Eq. 4.3-11 with respect to y and then adding gives V2$ = 0. The Chemical & Biomolecular Engineering Graduate Program encourages applicants with chemical engineering, chemistry, biochemistry, physics, and other related engineering backgrounds to apply to our program. Chemical engineers then translate this chemical information to formulate designs. Fractional Distillation Using Enthalpy-Concentration Method.

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The momentum, heat, and mass fluxes for the flat plate are given in Fig. 22.8-5. CHEN 5430 BUSINESS ASPECTS OF CHEMICAL ENGINEERING (3) LEC. 3. The concentra- tions will be given by the "mass fractions" w, and w,. Copyright 1997, American Chemical Society .) The original expression from the equation of continuity of species can be written as an ordinary differential: The above equation give the mole fraction profiles (see Figure 10-4) within the slab.

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It is also possible in certain flow situations to extend the analogy to momentum transfer as well. To describe the steady-state operation of an ultracentrifuge it is not necessary to know any transport properties. Thus, to get the concentration profiles from the temperature profiles, one replaces $! by k, and Pr by Sc. The curves pass through a minimum at an angle of 7”. The dilemma of having more unknowns than equations is fundamental and insurmountable when analyzing problems in turbulent flow.

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Equation 6.1-4 shows how to calculate f from ex- perimental data. APPENDIX B 435 Table B-14 Mutual Diffusion Coefficients of Inorganic Salts in Aqueous Solutions (55) Solute T ("C) 12 20 20 20 20 18 14 15 20 10 20 14 18 15 18 18 18 15 18 Concentration (g molehter) 0.46 0.59 1.1 0.4 5.00017 0.2 0.27 CH4 0.4 0.01 0.07 6.058 0.64 0. density 0.0 0.0036 0.058 0.62 2.00054 0.8 0.43 Table B-15 Diffusion Coefficients in Solid Polymers (79) cm2 DABValues in x lop6 sec ~ Polymer 1 Polyethylene terephthalate (glassy crystalline) 2 Polycarbonate (Lexan) 3 Polyethylene.31 (continued overleaf) .8 2.25 0.25 0.6 0.0048 0.372 0.7 H2 0 2 c02 0.14 0.46 1.28 1.36 1.19 1.17 0.021 0.4 0.0 0.39 1.2 D~~ x 105 [(cm2/sec) x 10'1 2.85 1.15 2.63 2.05 0.046 0.4 0.39 1.0 0.124 0.25 0.89 0.170 0.

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