英语翻译This report is a compilation of the data for 10 sets of

英语翻译
This report is a compilation of the data for 10 sets of conditions,or for a total of 339 equilibrium runs in recirculating flumes.The investigations for each set covered flow phenomena ranging from a plane bed and no movement of sediment to the antidunes first described by Gilbert (1914).The general procedure of recirculating the water-sediment mixture aided in obtaining the equilibrium conditions,because the roughness elements which resisted the flow were formed by the flow and the respective sediment sediment-movement characteristics.In the experiments used for this compilation,the from of the bed was changed from plane without sediment movement,to ripples,to dunes,to transitional,to plane with sediment movement and to antidunes by altering flow conditions.For a set of runs with a specific sand and flume,discharge and slope were the principal controllable variants for altering flow conditions.Depth,velocity,fluid resistance,sediment discharge,and,to some extent,slope changed with time until equilibrium was reached.
The scheme of presentation in the report is to:
1.Describe the equipment and sands.
2.Describe the procedure of operation.
3.Describe the data obtained.
4.Describe the characteristics of the individual runs.
5.Tabulate the mean values of the basic data for each run.
6.Tabulate the velocity-profile data for the runs having such data.