NEHRP Clearinghouse
- Title
- Approximations of Head and Flow Distributions in Liquid Filled Piping Networks Subject to Seismic Excitation Using a Steady Oscillatory Flow Model.
- File
- PB84180355.pdf
- Author(s)
- Alipour, E. M.; Young, F. M.
- Source
- National Science Foundation, Washington, DC., August 31, 1981, 118 p.
- Abstract
- The purpose of this study was to develop an economical method of analysis of piping networks subject to a seismic disturbance. A one-dimensional steady oscillatory method was employed and a powerful tool (a computer program for analyzing piping networks subject to steady oscillatory excitations) was developed for piping designers who wish to design pipelines for earthquake zones. In addition, a model was developed to simulate the geometrical excitation effects of the following piping network junctions: (1) dead-end, (2) 90 degree elbow, (3) tee, and (4) orifice. This model was verified for the dead-end, elbow, and tee connections by comparison with a method of characteristics model. This method of characteristics model was in turn verified by experimental data and energy analysis at resonance.
- Keywords
- Pipe joints; Pipe flow; Method of characteristics; Transient response; Earthquake engineering; Unsteady flow; Computer programs; Piping systems; Earthquakes