ชรินรัตน์ ศรีสำราญ. Numerical Simulation of Flow and Mixing Behavior of Impinging Streams of Shear-Thinning Fluids. Master's Degree(Food Engineering). King Mongkut's University of Technology Thonburi. : King Mongkut's University of Technology Thonburi, 2005.
Numerical Simulation of Flow and Mixing Behavior of Impinging Streams of Shear-Thinning Fluids
Abstract:
Numerical simulation was performed to study the flow and mixing behavior of steady-state, two-dimensional laminar confined impinging
streams of shear-thinning fluids. The coupled heat and momentum balance equations were solved with the finite element method using a
commercial software FEMLAB 3.0. The effects of various parameters, i.e., inlet jet Reynolds number based on the slot width (Rej) in the
range of 10-200 and the flow behavior index of the fluids in the range of 0.6161-1, on the flow and mixing behavior of impinging streams
were then investigated. It was found that when Rej increased the jet interaction in the impingement zone increased. Sizes of recirculating
bubbles also enlarged at higher Rej. For the same inlet jet Reynolds number it was found that lower flow behavior index caused weaker jet
interaction and smaller recirculating bubbles. Regarding the mixing behavior of the system it was found that smaller recirculating bubbles
led to better mixing in the impingement zone and its vicinity. Shorter main exit channel was required for complete mixing as Rej decreased
and the flow behavior index increased. The above-mentioned effects hold for both Newtonian and non-Newtonian fluids.