ROLL-WAVE TRAINS IN OPEN CHANNELS

THE MAXIMUM DEPTH AT WAVE CREST, MINIMUM DEPTH AT WAVE TROUGH, WAVE PERIOD AND WAVE VELOCITY OF SPONTANEOUSLY DEVELOPED ROLL-WAVE TRAINS WERE MEASURED IN A LABORATORY CHANNEL. CHANNEL SLOPE WAS VARIED FROM 0.05 TO 12, NORMAL DEPTH WAS VARIED BY A FACTOR OF TWO, AND THE FROUDE NUMBER OF THE UNDISTURBED FLOW RANGED FROM 3.5 TO 5.6. FOR EACH OF THE FOUR PROPERTIES, A SINGLE DEVELOPMENT CURVE RESULTED FOR ALL NORMAL DEPTH WITH CHANNEL SLOPE AND UNDISTURBED FLOW FIXED. THE SPATIAL RATE OF GROWTH OF THE AVERAGE MAXIMUM DEPTH INCREASED AS UNDISTURBED FLOW WAS INCREASED BY INCREASING CHANNEL SLOPE. THE GROWTH RATE DECREASED AS CHANNEL SLOPE WAS INCREASED AND UNDISTURBED FLOW WAS HELD FIXED. SUBSTANTIAL GROWTH OCCURS WHEN ONE WAVE OVERTAKES AND COMBINES WITH ANOTHER WAVE. GROWTH ALSO OCCURS WITHOUT WAVE OVERTAKING. SPONTANEOUSLY DEVELOPED ROLL WAVES ARE SHOWN TO BE RELATED TO PERIODIC PERMANENT ROLL WAVES. METHODS OF APPLYING THE LABORATORY RESULTS TO OTHER CHANNELS WITH INLET CONDITIONS SIMILAR TO THAT OF THE LABORATORY CHANNEL ARE PRESENTED. /ASCE/

• Supplemental Notes:
  • Vol 95, No HY 4, PROC PAPER 6704, PP 1401-1427, 16 FIG, 5
• Authors:
  • Brock, R R
• Publication Date: 1969-7

Media Info

• Serial:
  • Journal of the Hydraulics Division
  • Publisher: American Society of Civil Engineers

Subject/Index Terms

• TRT Terms: Channel flow; Channels (Waterways); Hydraulics; Laboratory tests; Streams; Wave motion
• Uncontrolled Terms: Open channel flow; Stream channels
• Old TRIS Terms: Wave action
• Subject Areas: Highways; Hydraulics and Hydrology;

Filing Info

• Accession Number: 00204241
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 29 1994 12:00AM