The Acoustical Behavior of Contra-Rotating Fan

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/mpe/volume-2018/3739067/figures/3739067.fig.007a.svgz" name="3739067.fig.007a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Comparison of flows, pressures, and efficiencies</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/mpe/volume-2018/3739067/figures/3739067.fig.007b.svgz" name="3739067.fig.007b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Comparison of sound pressures</td></tr></table>

<div>The comparison of simulation and experiment.</div>

Mathematical Problems in Engineering

fig7

Figure 7

Figure 7: The Acoustical Behavior of Contra-Rotating Fan 