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Heat transfer and fluid flow in minichannels and microchannels /
Heat exchangers with minichannel and microchannel flow passages are becoming increasingly popular due to their ability to remove large heat fluxes under single-phase and two-phase applications. Heat Transfer and Fluid Flow in Minichannels and Microchannels methodically covers gas, liquid, and electr...
| Clasificación: | Libro Electrónico |
|---|---|
| Autores principales: | , , , , |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
Oxford :
Butterworth-Heinemann,
[2013]
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| Edición: | 2nd ed. |
| Temas: | |
| Acceso en línea: | Texto completo |
Tabla de Contenidos:
- Front Cover; Heat Transfer and Fluid Flow in Minichannels and Microchannels; Copyright Page; Contents; About the Authors; Preface; Nomenclature; Greek Symbols; Subscripts; Superscripts; Operators; 1 Introduction; 1.1 Need for smaller flow passages; 1.2 Flow channel classification; 1.3 Basic heat transfer and pressure drop considerations; 1.4 The potential and special demands of fluidic biological applications; 1.5 Summary; 1.6 Practice problems; Problem 1.1; Problem 1.2; Problem 1.3; References; 2 Single-Phase Gas Flow in Microchannels; 2.1 Rarefaction and wall effects in microflows.
- 2.1.1 Gas at the molecular level2.1.1.1 Microscopic length scales; 2.1.1.2 Binary intermolecular collisions in dilute simple gases; 2.1.2 Continuum assumption and thermodynamic equilibrium; 2.1.3 Rarefaction and Knudsen analogy; 2.1.4 Wall effects; 2.2 Gas flow regimes in microchannels; 2.2.1 Ideal gas model; 2.2.2 Continuum flow regime; 2.2.2.1 Compressible Navier-Stokes equations; 2.2.2.2 Classic boundary conditions; 2.2.3 Slip flow regime; 2.2.3.1 Continuum NS-QGD-QHD equations; 2.2.3.2 First-order slip boundary conditions; 2.2.3.3 Higher-order slip boundary conditions.
- 2.2.3.4 Accommodation coefficients2.2.4 Transition flow and free molecular flow; 2.2.4.1 Burnett equations; 2.2.4.2 DSMC method; 2.2.4.3 Lattice Boltzmann method; 2.3 Pressure-driven steady slip flows in microchannels; 2.3.1 Plane flow between parallel plates; 2.3.1.1 First-order solution; 2.3.1.2 Second-order solutions; 2.3.2 Gas flow in circular microtubes; 2.3.2.1 First-order solution; 2.3.2.2 Second-order solution; 2.3.3 Gas flow in annular ducts; 2.3.4 Gas flow in rectangular microchannels; 2.3.4.1 First-order solution; 2.3.4.2 Second-order solution; 2.3.5 Experimental data.
- 2.3.5.1 Experimental setups for flow rate measurements2.3.5.2 Flow rate data; 2.3.5.3 Pressure data; 2.3.5.4 Flow visualization; 2.3.6 Entrance effects; 2.4 Pulsed gas flows in microchannels; 2.5 Thermally driven gas microflows and vacuum generation; 2.5.1 Transpiration pumping; 2.5.2 Accommodation pumping; 2.6 Heat transfer in microchannels; 2.6.1 Heat transfer in a plane microchannel; 2.6.1.1 Heat transfer for a fully developed incompressible flow; 2.6.1.2 Heat transfer for a developing compressible flow; 2.6.2 Heat transfer in a circular microtube.
- 2.6.3 Heat transfer in a rectangular microchannel2.7 Future research needs; 2.8 Solved examples; Example 2.1; Solution; Example 2.2; Solution; 2.9 Practice problems; Problem 2.1; Problem 2.2; Problem 2.3; Problem 2.4; Problem 2.5; Problem 2.6; References; 3 Single-Phase Liquid Flow in Minichannels and Microchannels; 3.1 Introduction; 3.1.1 Fundamental issues in liquid flow at microscale; 3.1.2 Need for smaller flow passages; 3.2 Pressure drop in single-phase liquid flow; 3.2.1 Basic pressure drop relations; 3.2.2 Fully developed laminar flow; 3.2.3 Developing laminar flow.