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could you repeat the point nr 3? explain the drawing

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could you repeat the point nr 3? explain the drawing

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Is there no shaft work for flow passing through pumps/turbines?

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Is there no shaft work for flow passing through pumps/turbines?

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What did you mean with the startup/shutdown?

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What did you mean with the startup/shutdown?

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Lecture 11 problem 2:The solution was supposed to be U_inf = sqrt((2*rho_A * gH)/rho)

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Lecture 11 problem 2:The solution was supposed to be U_inf = sqrt((2*rho_A * gH)/rho)

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This means that gz_s - gz_b equals 0. How is that?

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could you explain a little closer why the pressure is lower?

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could you explain a little closer why the pressure is lower?

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is it the pressure in the liquid that is reduced? and how does a flow make this happen?

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is it the pressure in the liquid that is reduced? and how does a flow make this happen?

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what do you mean with "head loss"..? like, what is "head"

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how did assuming incompressible flow let us set h_shaft=0 ?

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how did assuming incompressible flow let us set h_shaft=0 ?

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What is the difference between the two U´s?

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What is the difference between the two U´s?

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what does it say at the end of (u_2 - u_1 - ?)

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what does it say at the end of (u_2 - u_1 - ?)

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Does it say q_net, in in the right side of the W_shaft equation?

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Does it say q_net, in in the right side of the W_shaft equation?

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was there something different with the shaft work now?

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was there something different with the shaft work now?

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In the last equation "e_loss", is it "u" or "v"?

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In the last equation "e_loss", is it "u" or "v"?

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Can you please scroll up to the drawing for a bit?:)

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Can you please scroll up to the drawing for a bit?:)

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still don't understand what h_L and h_p are

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still don't understand what h_L and h_p are

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since we calculated h_p? is it hight of the pump

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what was the last thing you said? The W_electric is larger because?

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what was the last thing you said? The W_electric is larger because?

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Is point 1 not inside the pipe? how do we know if we can use bernouilli eq

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Is point 1 not inside the pipe? how do we know if we can use bernouilli eq

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Sulalit can you please try to explain a little detailed what hp og hl are? I don't understand the answers above

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Sulalit can you please try to explain a little detailed what hp og hl are? I don't understand the answers above

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Is the H_L given in the problem the same as head loss h_L?

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Is the H_L given in the problem the same as head loss h_L?

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Could you explain what Z is? Z_1 - Z_2 = H?

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Could you explain what Z is? Z_1 - Z_2 = H?

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will you go back to the previous slide real quick:)

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will you go back to the previous slide real quick:)

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are we still having wednesdays  lectures on campus?

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are we still having wednesdays  lectures on campus?

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Hvilket areal virker tangentielt eller noe?

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Hvilket areal virker tangentielt eller noe?

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How come the two sheer forces have opposite directions?

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How come the two sheer forces have opposite directions?

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Kan du gå raskt tilbake til forrige side?

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Kan du gå raskt tilbake til forrige side?

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If r=0 won't the entire right side become 0?

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If r=0 won't the entire right side become 0?

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why does it say/what does it mean; tau_w both up top and on the bottom of the "area"? 

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why does it say/what does it mean; tau_w both up top and on the bottom of the "area"? 

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Why is there only one shear stress term in the momentum balance?

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Why is there only one shear stress term in the momentum balance?

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does skin friction include friction from bends etc or is that called something else?

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does skin friction include friction from bends etc or is that called something else?

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Can you show the drawing on the last page once more

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Can you show the drawing on the last page once more