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 Simulation 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)
|
2013: Build 20120131 | % Error | 2014: Build 20130102 | % Error | |
| Newtonian | |||||
= 30 cc/s
|
4200 | 4325.57 | 2.98 | 4329.32 | 3.07 |
| Non-Newtonian | |||||
|
= 30 cc/s
|
3400 | 3578.62 | 5.25 | 3599.45 | 5.87 |
