As yet, the research works available in improving the
mixing quality of injection-type mixers include the study of
geometry design, injection to crossflow velocity ratio,
crossflow swirl strength, injection timing, wall-impinging
injection with a bump placed in the injection impingement
region, injection position and injection inclination angles [6].
Study on the effect of various injection frequencies on mixing
is still rarely seen. Hence, to ensure the simulation condition
was compatible with the actual engine operating condition,
experimental work was conducted at the outset of the research
to obtain the engine suction pressure in the intake manifold for
each case study. The data was then verified thoroughly through
previous work before applying it in the CFD simulation [6].
The same research methodology had been carried out to
investigate the effect of various injection inclination angles on
the mixing in TBIM and its results were found to be consistent
with previous work [6].