Experimental and Numerical Study of Swirling ... - Solid Mechanics

Experi imental and Numerical N Stud dy of Swirling g Flow in Scaveenging
Processs
for 2-Stroke
Marin ne Diesel Engin nes
Figure F 4.23: :
Normalized N Reyn nolds
Stress S Component t
@ z5 L3= =4D
Chapter 4
At furth her downstrea am position zz5
in figure 4.23,
the decayy
in the largeest
ww is
half the larg gest value at zz3.
The flow att
high Reynollds
number ReA
has stro onger tendenc cy towards axiaal
disturbancee
w ´ . The higgh
ww regioon
in the vortex v core an nd the near wwall
region groow
in size in radial directioon
and few w regions wit th patches off
very low w variance are
remained. In
general,
with the swirl
decay, the sspatial
distribuution
of www , however loow
in magn nitude, becom mes more unifoorm.
74
Swirling Flow in a Pipe