Download Particle Technology and Engineering. An Engineer's Guide to by Jonathan P.K. Seville, Chuan-Yu Wu PDF

By Jonathan P.K. Seville, Chuan-Yu Wu

Particle expertise and Engineering offers the fundamental wisdom and basic innovations which are wanted through engineers facing debris and powders. The booklet presents a entire reference and advent to the subject, starting from unmarried particle characterization to bulk powder homes, from particle-particle interplay to particle-fluid interplay, from basic mechanics to complex computational mechanics for particle and powder structures.

The content material specializes in basic recommendations, mechanistic research and computational methods. the 1st six chapters current uncomplicated details on homes of unmarried debris and powder platforms and their characterisation (covering the basic features of bulk solids (powders) and construction an figuring out of density, floor zone, porosity, and flow), in addition to particle-fluid interactions, gas-solid and liquid-solid platforms, with purposes in fluidization and pneumatic conveying. The final 4 chapters have an emphasis at the mechanics of particle and powder platforms, together with the mechanical behaviour of powder structures in the course of garage and circulation, touch mechanics of debris, discrete aspect equipment for modelling particle platforms, and finite point equipment for analysing powder systems.

This thorough consultant is helpful to undergraduates in chemical and different different types of engineering, to chemical and technique engineers in undefined, and early level researchers. It additionally offers a connection with skilled researchers on mathematical and mechanistic research of particulate structures, and on complicated computational methods.

  • Provides an easy advent to center issues in particle expertise: characterisation of debris and powders: interplay among debris, gases and beverages; and a few helpful examples of gas-solid and liquid-solid systems
  • Introduces the rules and functions of 2 worthwhile computational techniques: discrete point modelling and finite aspect modelling
  • Enables engineers to construct their wisdom and talents and to reinforce their mechanistic knowing of particulate systems

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Additional resources for Particle Technology and Engineering. An Engineer's Guide to Particles and Powders: Fundamentals and Computational Approaches

Sample text

Unlike the other definitions introduced above, this equivalent diameter is defined in terms of the aerodynamic behavior of the particle instead of its geometrical properties. , 1997), m is the viscosity of the fluid, g is the gravitational acceleration and rp and r are the densities of the particle and the fluid, respectively. 5. 0 Â 103 kg/m3 and the same settling velocity as the particle in the Stokes regime. It is similar to the definition of the Stokes diameter given in Eq. 9) Ca ðr0 À rÞg where Ca is the appropriate Cunningham slip correction factor for da.

3). 25) J¼ t rt A higher Hausner ratio or Carr index generally implies that the bulk material is more cohesive and less free flowing. This is because more cohesive powders can show higher initially stable voidage, which is reduced more by tapping than would be the case for a free-flowing powder. Similarly to the measurement of angle of repose, these are simple methods based upon relatively quick and easy measurements and are reproducible and effective in assessing how well the bulk material flows.

4) where Ah is the area of the circumscribed convex hull. The convexity has a value between 0 and 1, equaling 1 if there are no concave or reentrant features. 2 PARTICLE SIZE Bulk solids consist of many billions of particles of different size and shape. Determining a distribution of particle size is therefore problematic, since only spheres and cubes can be uniquely defined with a single number such as diameter or the side length. Much theoretical work in particle engineering takes the particles to be spherical but real particles are very rarely spherical.

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