Numerical Modeling of Unsteady Cavitating Flows around a Stationary Hydrofoil

<table>Comparisons of the measured and predicted lift coefficients (<svg height="15.5375" id="M306" style="vertical-align:-3.276pt" version="1.1" viewbox="0 0 19.525 15.5375" width="19.525" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,11.4)"><path d="M682 629q-1 -16 -1.5 -72t-2.5 -86l-31 -4q-5 92 -51 129t-139 37q-100 0 -177 -49t-116 -125t-39 -162q0 -122 66 -201t182 -79q83 0 137 42.5t112 128.5l26 -15q-12 -31 -42.5 -88t-45.5 -75q-139 -27 -199 -27q-148 0 -243 81.5t-95 226.5q0 173 129.5 274.5
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<g transform="matrix(.012,-0,0,-.012,12.05,15.475)"><use xlink:href="#x1D43F"></use></g>
</svg>) for various cavitation numbers. Re = 750,000, <svg height="15.4" id="M307" style="vertical-align:-3.39066pt" version="1.1" viewbox="0 0 53.075001 15.4" width="53.075001" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,11.112)"><use xlink:href="#x1D449"></use></g>
<g transform="matrix(.012,-0,0,-.012,12.675,15.187)"><use xlink:href="#x221E"></use></g>
<g transform="matrix(.017,-0,0,-.017,30.162,11.112)"><use xlink:href="#x3D"></use></g><g transform="matrix(.017,-0,0,-.017,44.849,11.112)"><use xlink:href="#x35"></use></g>
</svg> m/s, <svg height="13.1375" id="M308" style="vertical-align:-0.1638pt" version="1.1" viewbox="0 0 42.400002 13.1375" width="42.400002" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,12.875)"><use xlink:href="#x1D6FC"></use></g><g transform="matrix(.017,-0,0,-.017,14.426,12.875)"><use xlink:href="#x3D"></use></g><g transform="matrix(.017,-0,0,-.017,29.13,12.875)"><use xlink:href="#x36"></use></g>
<g transform="matrix(.012,-0,0,-.012,37.3,4.712)"><use xlink:href="#x2218"></use></g>
</svg>, and <svg height="11.125" id="M309" style="vertical-align:-0.1638pt" version="1.1" viewbox="0 0 36.237499 11.125" width="36.237499" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,10.862)"><use xlink:href="#x1D45B"></use></g><g transform="matrix(.017,-0,0,-.017,13.305,10.862)"><use xlink:href="#x3D"></use></g><g transform="matrix(.017,-0,0,-.017,28.008,10.862)"><use xlink:href="#x33"></use></g>
</svg>.</table>

International Journal of Rotating Machinery

fig17

Figure 17

Figure 17: Numerical Modeling of Unsteady Cavitating Flows around a Stationary Hydrofoil 