Chapter_4_-_Motion_of_Particles_Through_Fluids

Chapter_4_-_Motion_of_Particles_Through_Fluids - Chapter 4...

Info icon This preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 4 Motion of Particles Through Fluids Instructor: Dr. Rami Jumah Department of Chemical Engineering Jordan University of Science and Technology
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
JUST Department of Chemical Engineering ChE 362 Unit Operations Chapter 4-2 Settling Definition: In settling, two immiscible liquids, or a liquid and a solid, Gas and a solid differing in density, are separated by allowing them to come to equilibrium under the action of gravity, the heavier material falling with respect to the lighter. settling.MPg
Image of page 2
JUST Department of Chemical Engineering ChE 362 Unit Operations Chapter 4-3 Why do we need settling? Settling can be used to separate any particle from any fluid, whether it is a liquid from a gas, or a solid from a liquid. The removal of solids from liquid sewage wastes Getting crystals from what they precipitated from Settling solid food particles from a liquid food Settling the slurry from a leaching process.
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
JUST Department of Chemical Engineering ChE 362 Unit Operations Chapter 4-4 Types of Settling 1. Free settling 2. Hindered settling 1. Free settling Free settling implies that the particles are settling independently of each other, i.e., a low concentration of particles in a large volume of fluid.
Image of page 4
JUST Department of Chemical Engineering ChE 362 Unit Operations Chapter 4-5 2. Hindered settling Types of Settling If the settling is carried out with high concentrations of solids to liquid so that the particles are so close together that collision between the particles is practically continuous and the relative fall of particles involves repeated pushing apart of the lighter by the heavier particles it is called hindered settling. particles interfere with each other
Image of page 5

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
JUST Department of Chemical Engineering ChE 362 Unit Operations Chapter 4-6 Mechanics of Particle Motion The movement of a particle in a bulk fluid requires an external force acting on the particle. This force may come from a density difference between the particle and the fluid, or it may be the result of electric or magnetic fields. In this section only gravitational or centrifugal forces, which arise from density differences, are considered. Three forces act on a particle moving through a fluid: 1. External force: gravitational or centrifugal, F e 2. Buoyancy force: parallel and opposite to external force, F b 3. Drag force: appears when there is a relative motion between the particle and the fluid, parallel and opposite to external force, F D
Image of page 6
JUST Department of Chemical Engineering ChE 362 Unit Operations Chapter 4-7 One-dimensional Motion of Particle Though Fluid e b D du m F F F dt
Image of page 7

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern