Accession Number:

ADA170940

Title:

Studies of Scour Patterns Produced by Rotating Jets in a Flow Field.

Descriptive Note:

Final rept. Oct 83-Sep 84,

Corporate Author:

NAVAL CIVIL ENGINEERING LAB PORT HUENEME CA

Personal Author(s):

Report Date:

1986-06-01

Pagination or Media Count:

67.0

Abstract:

A series of laboratory experiments were conducted to determine the scouring properties of submerged jets. Five cases were considered 1 a jet rotating in still water 2 a fixed jet in a fluid moving parallel to the jet coflow 3 a fixed jet in a fluid moving perpendicular to the jet crossflow 4 a fixed jet in a fluid moving against the jet counterflow and 5 a jet rotating in a moving fluid. In each case, dimensionless equations were developed to estimate the applied shear stress at the bed as a function of distance from the jet. The test results showed that a fixed coflow jet scoured the greatest distance, and rotating a jet in a mean flow scoured the greatest area. A summary of test results for each jetcurrent combination is provided in tabular form.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Civil Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE