Required information A diffuser in a pipe flow is basically a slow expansion of the pipe...

 

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Required information A diffuser in a pipe flow is basically a slow expansion of the pipe diameter, which slows down the fluid velocity and increases the pressure (the Bernoulli effect). Water at room temperature flows with a volume flow rate of 0.0250 m³/s through a horizontal diffuser in which the pipe diameter increases gradually from D₁ = 6.00 to D₂ = 11.00 cm. The irreversible head loss through the diffuser is estimated to be 0.48 m. The flow is turbulent, and the kinetic energy correction factors at both the inlet and the outlet of the diffuser are assumed to be 1.05. 10 IV P It may be surprising that the answer to part (a) is positive, i.e., the pressure rises downstream. How is this possible? Explain by calculating the change in energy grade line AEGL and the change in hydraulic grade line AHGL from the upstream to the downstream location. In particular, does EGL go up or down, and does HGL go up or down? 13 The change in energy grade line AEGL is calculated to be ……………………… ..........…........ ********* m. Required information A diffuser in a pipe flow is basically a slow expansion of the pipe diameter, which slows down the fluid velocity and increases the pressure (the Bernoulli effect). Water at room temperature flows with a volume flow rate of 0.0250 m³/s through a horizontal diffuser in which the pipe diameter increases gradually from D₁ = 6.00 to D₂ = 11.00 cm. The irreversible head loss through the diffuser is estimated to be 0.48 m. The flow is turbulent, and the kinetic energy correction factors at both the inlet and the outlet of the diffuser are assumed to be 1.05. 10 IV P It may be surprising that the answer to part (a) is positive, i.e., the pressure rises downstream. How is this possible? Explain by calculating the change in energy grade line AEGL and the change in hydraulic grade line AHGL from the upstream to the downstream location. In particular, does EGL go up or down, and does HGL go up or down? 13 The change in energy grade line AEGL is calculated to be ……………………… ..........…........ ********* m.

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applying z j Now thus Now Bernoulli equation 21... View the full answer