Accession Number:

AD0689457

Title:

SOME ASPECTS OF FLOW-INDUCED VIBRATIONS OF HYDRAULIC CONTROL GATES,

Descriptive Note:

Corporate Author:

IOWA UNIV IOWA CITY IOWA INST OF HYDRAULIC RESEARCH

Personal Author(s):

• Locher,Frederick A.

Report Date:

1969-02-01

Pagination or Media Count:

197.0

Abstract:

High-head gates in dams and outlet works, was the principal concern of the investigation. The geometrical configuration chosen for the study is a highly idealized representation of a flat-bottomed, high-head gate just protruding into the flow--in effect, a normal wall or step. The primary objectives of the research were to investigate how basic flow instabilities associated with a free shear layer may lead to flow-induced vibrations of high-head gates, and to relate the mechanisms elucidated by the study of the idealized gate geometry to a general classification of flow-induced excitation. Author

Descriptors:

• (*HYDRAULIC EQUIPMENT
• VIBRATION)
• CONTROL SYSTEMS
• HYDRODYNAMICS
• DAMS
• STABILITY
• SHEAR STRESSES
• CAVITATION
• MATHEMATICAL MODELS

Subject Categories:

• Civil Engineering
• Hydraulic and Pneumatic Equipment
• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE