Accession Number:

ADA446004

Title:

Comparison Between Navier-Stokes and DSMC Calculations for Low Reynolds Number Slip Flow Past a Confined Microsphere

Descriptive Note:

Conference paper

Corporate Author:

BULGARIAN ACADEMY OF SCIENCES SOFIA INST OF MECHANICS

Report Date:

2005-07-13

Pagination or Media Count:

7.0

Abstract:

In the present investigation, slip-continuum and molecular DSMC flow models have been used to compare the drag coefficient on a confined microsphere over a range of Knudsen numbers between 0.01 and 0.4. The simulations consider a fixed Reynolds number Re0.125 and a range of blockage ratios from 2.0 up to 13.0. Two separate problem formulations have been studied the first considers flow past a confined sphere moving with a constant velocity along the central axis of the pipe while the second considers Poiseuille flow past a stationary confined sphere. Finally, their combination - the case of a confined sphere moving within the carrier Poiseuille flow is investigated using the DSMC method.

Subject Categories:

  • Statistics and Probability
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE