Wet Modal Analyses of Various Length Coaxial Sump Pump Rotors with Acoustic-Solid Coupling

<table class="table-group" id="tab6"><tr><td><table class="table"><tr><td class="thead-hr" colspan="9"><hr/></td></tr><tr><td class="align_left"><i>D</i> (mm)</td><td class="align_center">900</td><td class="align_center">1200</td><td class="align_center">1500</td><td class="align_center">1800</td><td class="align_center">2000</td><td class="align_center">2400</td><td class="align_center">2700</td><td class="align_center">3000</td></tr><tr><td class="align_left" colspan="9"><hr/></td></tr><tr><td class="align_left">First natural frequency <i>f</i> (Hz)</td><td class="align_center">54.513</td><td class="align_center">32.717</td><td class="align_center">22.024</td><td class="align_center">16.143</td><td class="align_center">13.220</td><td class="align_center">9.320</td><td class="align_center">7.549</td><td class="align_center">6.218</td></tr><tr class="table-tr"><td colspan="9"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>First natural frequencies for the various rotor lengths without prestresses.</div>

Shock and Vibration

tab6

Table 6

Table 6: Wet Modal Analyses of Various Length Coaxial Sump Pump Rotors with Acoustic-Solid Coupling 