CE632-COMPUTATIONAL HYDRAULICS AND HYDROLOGY
SPRING 2002
MIDTERM EXAM
MARCH 12, 2002, 1900-2015

Name: ______________________ S.S. No. ________________ Grade: _______

Instructions: Closed book, closed notes. Use engineering paper. When you are finished, staple your work in sequence, and return this sheet with your work. Answer only 10 questions.

  1. Compare the celerity and attenuation properties of kinematic, diffusion, dynamic, and inertial (gravity) waves.

  2. What do overland flow and slow-rising flood waves have in common that they lend themselves to description by kinematic and diffusion waves?

  3. Describe the importance of the reference channel length, i.e., the distance measured along the channel in which the river elevation falls by an amount equal to its depth.

  4. What is the main message of Cunge's paper?

  5. How does the variable-parameter Muskingum-Cunge method differ from its constant-parameter counterpart?

  6. Describe the physical and numerical conditions under which the Muskingum-Cunge method is applicable and accurate.

  7. Why is the looped-rating Muskingum-Cunge routing better than the weighted Preismann scheme used in dynamic wave models?

  8. What causes waves to attenuate in unsteady flow?

  9. What is the message of the paper entitled ``Verification of theory of roll wave formation''?

  10. How does cross-sectional shape determine stability? Explain.

  11. Under what four physical conditions is the kinematic shock more likely to develop?

  12. In surface water modeling, why is it better to neglect both inertia terms instead of just one?