Analysis Characteristics
- Steady-state
- 2D internal flow
- Laminar
- Incompressible
- Non-Newtonian
Reference
Georgiou,G., Momani,S., Crochet,M.J., Walters, K., “Newtonian and non-Newtonian flow in a channel obstructed by an antisymmetric array of cylinders”, Jour. of Non-Newtonian Fluid Mechanics, 40, (1991), pp. 231-260.
Problem Description
The geometry is a channel with a rectangular cross-section with seven cylinders in a non-symmetric array. A Newtonian and a non-Newtonian fluid were tested. The non-Newtonian fluid is a 2% aqueous solution of polyacrylamide which is considered to be highly elastic shear-thinning.
The pressure drop across the channel calculated by Autodesk® CFD was compared to measured data.
Geometry and Boundary Conditions
Where A = 2.3 cm., B = 1.25 cm., C = 3.375 cm., D = 0.35 cm., L = 32.6 cm., W = 2.5 cm.
The volume flow rate is 12.0 cm3/sec.
Results
The pressure drop (Pa) across the channel is compared:
Benchmark
(Pa)
|
2016: Build 20150209 | % Error | 2017: Build 20160302 | % Error | |
| Newtonian | |||||
= 30 cc/s
|
4200 | 4294.52 | 2.25 | 4602.62 | 9.59 |
| Non-Newtonian | |||||
|
= 30 cc/s
|
3400 | 3594.86 | 5.73 | 3552.48 | 4.48 |