HYDRAULIC CHARACTERISTICS OF SPATIALLY VARIED FLOW IN A TRAPEZOIDAL CHANNEL

THIS STUDY REPRESENTS THEORETICAL AND EXPERIMENTAL ANALYSES OF THE HYDRAULIC CHARACTERISTICS OF SPATIALLY VARIED FLOW WITH INCREASING DISCHARGE IN A TRAPEZOIDAL CHANNEL. IN THEORETICAL ANALYSIS, GENERAL DYNAMIC EQUATIONS IN DIMENSIONAL AND DIMENSIONLESS FORMS WERE DERIVED TO EXPRESS THE SLOPE OF THE WATER SURFACE PROFILE OF THE SPATIALLY VARIED FLOW IN CHANNELS OF TRAPEZOIDAL, RECTANGULAR AND TRIANGULAR SHAPES. THE CHARACTERISTICS OF FOUR POSSIBLE WATER SURFACE PROFILES WERE ANALYZED AND DISCUSSED BY EXAMINING THE DYNAMIC EQUATION. THE LOCATION OF THE CONTROL SECTION FOR EACH OF THE WATER SURFACE PROFILES WAS ALSO DISCUSSED. THE EQUATION WAS NUMERICALLY INTEGRATED THROUGH THE USE OF AN ELECTRONIC DIGITAL COMPUTER IN ORDER TO COMPUTE THE PROFILES FOR VARIOUS CHANNEL SLOPES AND FLOW CONDITIONS. THE LOCATION OF THE CONTROL SECTION FOR EACH OF THE WATER SURFACE PROFILES WAS COMPUTED. THE EFFECTS OF LATERAL INFLOW UPON WATER SURFACE PROFILES WERE ALSO DETERMINED BY COMPUTATIONS. THE EXPERIMENTAL ANALYSIS WAS CONDUCTED ON A TRAPEZOIDAL FLUME WHICH WAS MODELED FROM A TYPICAL HIGHWAY DITCH IN ORDER THAT THE RESULTS OF THIS STUDY MIGHT BE DIRECTLY MADE USEFUL FOR THE IMPROVEMENT OF HIGHWAY DITCH DESIGN. QUANTITIES PERTINENT TO THE FLOW CHARACTERISTICS OF THE SPATIALLY VARIED FLOW IN THE FLUME WERE MEASURED AND ANALYZED FOR VARIOUS CHANNEL SLOPES AND FLOW CONDITIONS. THE RESULTS OF THE THEORETICAL AND EXPERIMENTAL ANALYSES ARE PRESENTED AND COMPARED IN GRAPHICAL AND TABULAR FORMS SO AS TO VERIFY THE THEORY BY EXPERIMENT. THE RESULTS PRESENTED WITH DIMENSIONLESS PARMAMETERS ARE ESPECIALLY USEFUL IN PROVIIING A CONVENIENT MEANS FOR THE DESIGN OF CHANNELS WITHIN PRACTICAL LIMITATIONS. BY OBSERVATION, THE FLOW PATTERNS ASSOCIATED WITH THIS TYPE OF FLOW ARE DESCRIBED AND SKETCHED.

  • Corporate Authors:

    Auburn University

    Auburn, AL  United States  36830
  • Authors:
    • Mirza, M S
  • Publication Date: 1965-6

Subject/Index Terms

Filing Info

  • Accession Number: 00204090
  • Record Type: Publication
  • Report/Paper Numbers: 101 pp
  • Files: TRIS
  • Created Date: Jun 22 1994 12:00AM