TURBULENT BOUNDARY LAYER AND FLOW RESISTANCE ON PLATES ROUGHENED BY WIRES

The flow resistance in a plate roughened by equally spaced wires at right angles to the flow direction was investigated experimentally by measuring the turbulent boundary layer developing along it. Measurements of pressure distribution around a roughness element revealed that the pressure drag accounts for a large portion of the surface resistance and remaining skin frictional part is almost equal to that of a smooth plate. Measurements were also made for plates having three-dimensional roughness. These plates were roughened by short wires in a staggered manner. In this case, the boundary layer was found to have a three-dimensional structure due to accompanying secondary currents.

• Supplemental Notes:
  • Prepared for ASME Meeting Mar 21-25,1976.
• Corporate Authors:

  American Society of Mechanical Engineers

  Two Park Avenue
  New York, NY  United States  10016-5990
• Authors:
  • Furuya, Y
  • MIYATA, M
  • FUJITA, H
• Publication Date: 1976-3

Media Info

• Features: References;
• Pagination: 11 p.

Subject/Index Terms

• TRT Terms: Boundary layer; Pressure; Roughness; Three dimensional flow; Turbulence; Turbulent boundary layer
• Uncontrolled Terms: Pressure distribution; Secondary flow
• Subject Areas: Design; Marine Transportation;

Filing Info

• Accession Number: 00138497
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: Pap N76-FE-6
• Files: TRIS
• Created Date: Sep 4 1976 12:00AM