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The need for a reliable research method of the external flow field has increased with the more widespread use of intermediate pressure jets. The experimental method and numerical simulation method were investigated, using the particle image velocimetry (PIV) technique and the volume of fluid‐level set (VOF‐level set) method. Both methods performed well on nozzles with different geometric parameters...
A new type of flow straightener designed with two coaxial circular pipes structure has been proposed. Flow straightener is used to improve the range of fire fighting water cannon. To know the influence of structure sizes on the performance of water cannon, four factors and three levels orthogonal test was designed. Simulation are carried out using commercial software ANSYS FLUENT. Standard k - ε turbulence...
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