ASCE will be sunsetting the Civil Engineering Database (CEDB) in the coming months. We encourage you to start using the ASCE Library to perform content searches. In the ASCE Library, you can save your search results as well as receive email content alerts when new content relevant to your area of interest is published. Try it out today at https://ascelibrary.org.

 

Avoiding Vibration in Penstocks

by E. T. Moore, Harza Engineering Co, Chicago, United States,



Document Type: Proceeding Paper

Part of: Waterpower '91: A New View of Hydro Resources

Abstract:

One objective of this paper is to indicate the potential sources of pressure pulsations within a hydraulic conduit system and the range of forcing frequencies associated with these sources. A second objective is to indicate what options are available to correct a severe, unacceptable penstock vibration which has developed due to resonance between the forcing frequency of a pressure pulsation and one of the natural vibrating frequencies of a reach of the penstock. In addition, the designer should gain an insight and understanding of how the overall hydraulic conduit system and, in particular, the exposed penstock might be configured and dimensioned during design to avoid possible resonance with calculated forcing frequencies. The designer will know the project's turbine operating characteristics and have the opportunity to make some modifications to the water conduit dimensions.

Subject Headings: Conduits | Vibration | Natural frequency | Resonance | Hydraulic design | Water pressure | Hydraulic structures

Services: Buy this book/Buy this article

 

Return to search