《单元操作输送现象解题技巧》

（A）The simulation problems and solutions for momentum transfer1

ContensPart（Ⅰ）Transport phenomena1

【Example 1】Laminar flow between two parallel flat plates2

〔Exrcise〕Laminar flow in a narrow slit8

〔Exrcise〕Performance of an electric dust collector10

【Example 2】Laminar flow through a circular pipe14

〔Exrcise〕Analysis of capillary flow meter22

〔Exrcise〕Efflux time for tank with exit pipe24

【Example 3】Tangential annular flow of a Newtonian fluid26

〔Exrcise〕Velocity distribution between two rotating cylinders28

〔Exrcise〕Velocity distribution in a stormer viscometer28

【Example 4】Laminar flow an inclined plate31

〔Exrcise〕Drainage of liquids34

〔Exrcise〕Flow of a falling film with a moving boundary36

〔Exrcise〕Laminar flow of falling film on outside of a circular tube38

【Example 5】Laminar flow through an annulus43

〔Exrcise〕Annular flow with inner cylinder moving axially48

【Example 6】Radial flow between coaxial cylinder51

【Example 7】Acceleration effects in unsteady flow from a tank55

【Example 8】Momentum balance problem-jet in a pressurized tank57

【Example 9】Mass balance problem-unsteady state flow in a tank60

【Example 10】Unsteady state flow problem-two parallel plates62

〔Exrcise〕Flow near a wall suddenly set in motion64

【Example 11】Boundary layer flow problem-momentum integral equation and its application67

【Example 12】 Iceal Fiow(Potential flow)74

（B） Simulation problems and solutions for heat transfer87

【Example 1】Conduction through the hollow cylinder87

【Example 2】Critical radius of insulation89

〔Exrcise〕examine the inulation thickness on heat loss91

Case(A)Heat generation in plane wall92

【Example 3】Conduction with internal heat generation92

Case(B)Heat generation in cylinder94

【Example 4】The one-dimensional fin equation97

〔Exrcise〕examine the fin effects103

【Example 5】Two-dimensional steady state heat conduction with no heat generation105

-solved by separation of variable method107

【Example 6】Two-dimensional stady state heat conduction109

【Example 7】 One-dimensional unsteady state heat conduction113

Case(1)Lumped-system analysis for Bi《0.1114

Case(2)Distribution-system for Bi》0.1117

Case(1)Heat transfer in couette flow126

【Example 8】 Internal laminar forced convective flow126

Case(2)Temperature profile for laminar flow in tubes133

【Example 9】External laminar forced convective flow137

【Example 10】External turbulent forced convective flow141

【Example 11】Heat transfer from a wall to a falling film149

（C）Simulation problems and solutions for mass transfer154

1．Steady-state molecular diffusion in gas154

【Example 1】Pseudo-steady-state diffusion through a stagnant gas film158

【Example 2】Steady-state diffusion from a sphere162

【Example 3】Diffusion from a droplet into a qulesient gas164

【Example 4】Diffusion through a stagnant liquid film166

2．Diffusion with chemical reaction168

【Example 5】Diffusion with heterogeneous chemical reaction171

【Example 6】Determine the rate of combustion of coal175

【Example 7】Diffusion with homogeneous chemical reaction179

【Example 8】Effectiveness factor for thin disks187

3．Diffusion into a falling liquid film188

【Example 9】Solid dissolution into a falling film194

4．Unsteady-state molecular diffusion199

【Example 10】Transient diffusion in a semi-infinite medium202

5．Mass transfer coefficient205

【Example 11】NH3 absorption in a wetted-wall tower207

〔Exrcise〕Mass transfer in an absorption tower208

〔Exrcise〕Mass transfer in a wetted-colum210

【Example 12】Mass transfer in a distillation tower213

6．Mass transfer in the laminar flow217

【Example 13】Mass transfer in the boundary layer219

【Example 14】Chilton-colburn analogy problem220

【Example 15】Heat and mass transfer analogy222

Part（Ⅱ）Unit operation225

（1）The calculation of heat transfer equipment-evaporator heat exchanger225

（2）The vapor-liquid separation process-distillation234

（3）The gas-liquid separation process-absorption desorption249

（4）Liquid-solid separation process-leaching260

（5）Water-air separation process-humidification dehumidication266

（6）Water-solid separation process-drying280

（7）Particle-fluid separation process-settling288

（8）Flow measurement and pump298

Part（Ⅲ） 历届试题详解323

〔台大61～75年单操输送研究所入学考题及解答〕323

〔清大63～71年单操输送研究所入学试题及解答〕439

〔附录47～72年化工历届高考单操输送考题〕509