Determination of the reaction of a continuous baffle wall with a rectangular cross section

Conclusions

• 1. The drag coefficients were determined experimentally for a rapid flow past a continuous wall of rectangular cross section with a height in the range C/h₁=1/3–5/3 for Foude numbers from 20 to 110.

• 2. It was shown that the reaction related from the effect of the forward flow on the upstream face of the wall is negligibly small if the wall is located lower than the front part of the roller of the jump at a distance of more than 3.5–4 jump heights; the given wall can be regarded as a spillway.

• 3. The possibility of extrapolating dependence (7) for determining the optimal wall height for which a minimum lower pool depth is needed for submergence of the jump, from Fr=100 to Fr=200, was confirmed.

• 4. After substantiation, the use of baffles or basin with a length of not more than 1.5 jump heights can be recommended.