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Does this equation describe the quadratic velocity profile? I could not find it in the lecture notes

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page 47: there are 2 cases differentiated, what are these? Is it important that we know the derivation of this graph? I did not quite understand what was done on page 47ff...

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How should we read this diagram? What do the lines mean / how should the lines (D* and bedforms) be interpreted?
Should we know D* also by heart?

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What do we want to find out with this formula? Why do we put the critical shear stress of the bed in relation to the one on the embankment? (S.33)

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Is there a way to estimate this angle, if it is not known from a laboratory experiment?
Did I understood it correctly that you can't show this angle on the image of this slide?
(lecture 13, S.19)

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How should we read the axes and interpret the distribution of stress and resistance, i.e what units do the axes have? What do the areas under the curves mean? What is the meaning of the overlaying area? Why is the frequency of the resistance higher than that of the stress?

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Are the parameter symbols at the exam corresponding to those on the formula sheet?

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How do I know whether to take a smaller or bigger value in the next iteration (method of partial areas)?

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What does this y0 stand for?

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Can you please provide master solutions to the excerises? We have very little material to study with for this exam and in order to really understand what assumptions we have to make at different steps of the calculations, solutions would help a great deal.

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1. How do I get the characteristic bed forming discharge?
2. How do I know which/how deep bank protection I need?
3. How do I know how the restoration affects the grain size diameter d_m?

Thank you very much in advantage for your help!

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(lecture 10, S.44)
Why do the bank slopes become smaller during flood events?
(lecture 10, S.45)
Why can i express the wavelength in terms of Q? For me this does not make sense with the units.

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Will there follow more handouts (as for the first lecture)?

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I do not understand in which case or for which purpose they are:
a) pointing upstream
b) pointing downstream
c) bent/curved

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(lecture 13, slide 11)
What does parameter a stand for?

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(slide 12)
What does C describe and how do I know which C to take?

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(lecture 7, slide 21)
What does this n= 1/2 and n= 2/3 stand for?

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- Why doesn't they account for FBsin(alpha)?
- Where do the drag and lift force act, when not at the center of gravity?

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(lecture 5, slide 11)
For what is this coefficient of determination R² useful? What does a large/small value mean?

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(lecture 5, slide 65)
How can I calculate this delta dm (last row)?

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Why is R = r/2? Which of the two r's is the normal radius? (pipe flow)

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(lecture 2, slide 42-43)
Did I understood it correctly that the annual total bedload over the distance is the sediment transport diagram? Or is tit the changes in transportet volume over the distance?

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(lecture 2, Slide 36)
How far beneath the average bed level do we normally choose the reference height? Is it the deepest point where we would expect erosion?

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(lecture 3, slide 26 or on formula sheet)
When I have a range as (1.5-2) d or (2.5-3)d90, how do I know which value to take for my calculations?

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Bedload transport: Minimum and maximum bedload transport capacity for a given discharge

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Bedload transport: Minimum and maximum bedload transport capacity for a given discharge

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If a discharge is given, and the calculated non-dimensional shear stress is larger than the critical non-dimensional shear stress as well as the critical non-dimensional shear stress of the armor layer; is that true that in this case the minimum and the maximum beadload transport capacity is the same?

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Regarding wide channels, should we use h and b' instead of R_s and b for every formula or just for WaP?

Thanks!

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On page 3, the definitions of sigma_h and sigma_s are inverted comared with the definitions given in the lecture (lecture 4, p.22)

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On page 3, the definitions of sigma_h and sigma_s are inverted comared with the definitions given in the lecture (lecture 4, p.22)

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S and B as indexes stand for example for river bed, which other variables are there which mean the same thing?

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Discharge calculation: Wettet perimeter P_v

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Discharge calculation: Wettet perimeter P_v

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Exercise 1: Discharge calculation

For the new wettet perimeter P_v, better to assume h or to calculate the orthogonal distance from the embankment to the water surface?

Thanks!

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(lecture 2, slide 22)
- What does it mean when data is homogenized? Is the data from the FOEN homogenized or not? (In german it says no, and in english yes, I am confused.)
- Why do they use the Maximum Likelihood method?