TKP 4100 Lecture 12-14 by Sulalit Bandyopadhyay https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44 Discussion Board en-us 2021-02-08 13:17:11 UTC 2021-02-11 15:00:43 UTC hello@padlet.com could you repeat the point nr 3? explain the drawing https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1176764502 2021-02-08 13:29:24 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1176764502 Is there no shaft work for flow passing through pumps/turbines? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1176775115 2021-02-08 13:31:36 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1176775115 What did you mean with the startup/shutdown? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1176779187 2021-02-08 13:32:26 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1176779187 could you explain what shaft work is https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1176781722 2021-02-08 13:32:59 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1176781722 Lecture 11 problem 2:The solution was supposed to be U_inf = sqrt((2*rho_A * gH)/rho) https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1176796309 This means that gz_s - gz_b equals 0. How is that?

]]> 2021-02-08 13:36:05 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1176796309 could you explain a little closer why the pressure is lower? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1176907991 2021-02-08 13:57:40 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1176907991 is it the pressure in the liquid that is reduced? and how does a flow make this happen? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1176928159 2021-02-08 14:01:20 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1176928159 Is the v with a krøll speed? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1177098949 2021-02-08 14:29:38 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1177098949 https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1177159444 what do you mean with "head loss"..? like, what is "head" 

]]> 2021-02-08 14:39:17 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1177159444 how did assuming incompressible flow let us set h_shaft=0 ? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1177174502 2021-02-08 14:41:38 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1177174502 What is the difference between the two U´s? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1177182768 2021-02-08 14:43:01 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1177182768 what does it say at the end of (u_2 - u_1 - ?) https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1177190293 2021-02-08 14:44:20 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1177190293 Does it say q_net, in in the right side of the W_shaft equation? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1177190404 2021-02-08 14:44:21 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1177190404 was there something different with the shaft work now? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1177226724 2021-02-08 14:50:05 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1177226724 In the last equation "e_loss", is it "u" or "v"? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1177248227 2021-02-08 14:53:36 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1177248227 Hva var SFEE https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1187858612 2021-02-10 15:18:41 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1187858612 Hva betyr friksjonstap? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1187907121 2021-02-10 15:26:42 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1187907121 Can you please scroll up to the drawing for a bit?:) https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1187952678 2021-02-10 15:34:14 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1187952678 what is h_p and h_l https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1187964847 2021-02-10 15:36:08 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1187964847 Can rho be the same in point 1 and 2? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1187981213 2021-02-10 15:38:43 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1187981213 where did you get 5m from https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1188039589 2021-02-10 15:48:24 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1188039589 still don't understand what h_L and h_p are https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1188072374 since we calculated h_p? is it hight of the pump

]]> 2021-02-10 15:53:59 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1188072374 what was the last thing you said? The W_electric is larger because? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1188073505 2021-02-10 15:54:11 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1188073505 Is point 1 not inside the pipe? how do we know if we can use bernouilli eq https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1188073601 2021-02-10 15:54:12 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1188073601 hva er h_p https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1188075003 2021-02-10 15:54:27 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1188075003 Sulalit can you please try to explain a little detailed what hp og hl are? I don't understand the answers above https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1188141326

]]> 2021-02-10 16:05:52 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1188141326 står h_l for head loss? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1188244449 2021-02-10 16:22:20 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1188244449 Is the H_L given in the problem the same as head loss h_L? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1188262542 2021-02-10 16:25:12 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1188262542 litt nærmere, h_T på høyre siden fordi? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1188266560 2021-02-10 16:25:42 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1188266560 Is the v1 and v2 zero here as well? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1188281907 2021-02-10 16:27:59 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1188281907 Could you explain what Z is? Z_1 - Z_2 = H? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1188305883 2021-02-10 16:31:51 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1188305883 will you go back to the previous slide real quick:) https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1188319952 2021-02-10 16:34:08 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1188319952 could we see the last slide real quick? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1188366516

]]> 2021-02-10 16:41:29 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1188366516 Why is p max = w t, max? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1188368527 2021-02-10 16:41:48 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1188368527 How is P_max = W_T,max ? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1188368592 2021-02-10 16:41:49 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1188368592 does it say ^1/4 for the turbulent Le? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1188444797 2021-02-10 16:53:47 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1188444797 are we still having wednesdays lectures on campus? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1192078365 2021-02-11 13:19:33 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1192078365 Hvilket areal virker tangentielt eller noe? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1192149581 2021-02-11 13:35:41 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1192149581 How come the two sheer forces have opposite directions? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1192152247 2021-02-11 13:36:13 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1192152247 Kan du gå raskt tilbake til forrige side? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1192161917 2021-02-11 13:38:19 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1192161917 If r=0 won't the entire right side become 0? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1192208337 2021-02-11 13:47:59 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1192208337 what does U_AV stand for? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1192432484 2021-02-11 14:28:37 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1192432484 why does it say/what does it mean; tau_w both up top and on the bottom of the "area"? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1192500400 2021-02-11 14:39:55 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1192500400 Why is there only one shear stress term in the momentum balance? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1192509380 2021-02-11 14:41:29 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1192509380 Where is the long friction pointing to? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1192554298 2021-02-11 14:49:07 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1192554298 does skin friction include friction from bends etc or is that called something else? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1192559990 2021-02-11 14:50:09 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1192559990 Can you show the drawing on the last page once more https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1192572306 2021-02-11 14:52:13 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1192572306 Hva var tallsvaret til reynolds number? https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1192620433 2021-02-11 15:00:33 UTC https://padlet.com/sulalitbandyopadhyay/v1m13k6ezagsyd44/wish/1192620433