Comparison Between Navier-Stokes and DSMC Calculations for Low Reynolds Number Slip Flow Past a Confined Microsphere
BULGARIAN ACADEMY OF SCIENCES SOFIA INST OF MECHANICS
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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.
- Statistics and Probability
- Fluid Mechanics