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→Multi-stage Risers
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==Multi-stage Risers==
==Multi-stage Risers==
+
+<math>
+Q=\left\{\begin{matrix}
+0,& Z\leq Z_{0} \\
+C_{w}L_{w}\left ( Z-Z_{0} \right )^{1.5} & Z_{0}\leq Z\leq Z_{0}+H_{0}\\
+C_{d}A_{0}\sqrt{2g\left (Z-Z_{0}-0.5H_{0}\right)} & Z_{0}+H_{0}\leq Z\leq Z_{1}\\
+C_{w}L_{w}\left ( Z-Z_{1} \right )^{1.5}+C_{d}A_{0}\sqrt{2g\left (Z-Z_{1}\right)} & Z_{1}<Z
+\end{matrix}\right.
+</math>
==Low flow devices==
==Low flow devices==