The magnitude of basset forces in unsteady multiphase flow computations
- Tulane Univ., New Orleans, LA (United States). Dept. of Mechanical Engineering
This paper reports on the equation of motion of a small spherical particle moving in a fluid which is solved numerically with the radius of the sphere and the ratio of fluid to particle densities being parameters. The Basset force term is computed and compared to the total force on the particle for the case of turbulent flow in a duct. It is found that the Basset force may be neglected in the equation of motion of the particle only when the fluid to particle density ratio is very high and the particle diameter is greater than 1[mu]m. A dimensional analysis is also performed for the case when the particle size and the characteristic flow dimension are of the same order of magnitude. In the latter case, it is deduced that the Basset force is significant whenever the flow Reynolds number is greater than one.
- OSTI ID:
- 6792782
- Journal Information:
- Journal of Fluids Engineering; (United States), Journal Name: Journal of Fluids Engineering; (United States) Vol. 114; ISSN 0098-2202; ISSN JFEGA4
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
420400* -- Engineering-- Heat Transfer & Fluid Flow
COMPUTER CALCULATIONS
DIFFERENTIAL EQUATIONS
DUCTS
EQUATIONS
EQUATIONS OF MOTION
FLUID FLOW
FLUID MECHANICS
FLUIDS
MECHANICS
MULTIPHASE FLOW
NUMERICAL SOLUTION
PARTIAL DIFFERENTIAL EQUATIONS
PARTICLES
REYNOLDS NUMBER
TURBULENT FLOW
UNSTEADY FLOW