3 edition of Flow-induced vibration found in the catalog.
Includes bibliographical references and indexes.Originally published: 2nd ed. New York : Van Nostrand Reinhold, c1990.
|Statement||Krieger Pub. Co.|
|Publishers||Krieger Pub. Co.|
|The Physical Object|
|Pagination||xvi, 103 p. :|
|Number of Pages||45|
nodata File Size: 2MB.
Clamp type supports rely on bolted arrangements. In Figure 1, F flex is the flexural reaction and F cen is the centripetal force due the effect of the curvature of the vibrating pipe section on the internal fluid flow.
Fluid is flowing through at an average velocity, V see Figure 1. Therefore, for very thick pipes I is higher and critical velocity is increased which implies that the system will resist or tolerate higher velocities according to Equations 57 and 58but wrongly replacing the fluid mass per unit length Flow-induced vibration the total mass per unit length for a thick pipe will predict a much lower critical velocity than the right value.
Excitation due to this can lead to fatigue failure of welded downstream connections. This increased vibration amplitude exacerbates the vibration of the pipe as the velocity is increased. The proposed new equations can be widely used to check and limit flow induced vibration level.
3: Process Piping Description of Activities 4. The book includes several practical examples and thorough explanations of the structure, the evaluation method and the mechanisms to aid understanding of flow induced vibration. Therefore, Equations 28 and 17 into 16 gives 29 which implies that 30 Equation Flow-induced vibration gives the natural frequency for the case of clamped fixed ends of the vibrating pipe section.
In a nut shell, vibrations from other sources should be checked when tackling flow induced vibration problem.
The book Flow-induced vibration several practical examples and thorough explanations of the structure, the evaluation method and the mechanisms to aid understanding of flow induced vibration.Prentice Hall, New Jersey 1993, pp 359-371, 727, 730.
The study recommendations shall be incorporated in the design of Piping Systems. b Impact of Flow Induced Vibration — FIV Flow Induced Vibration can lead to Fatigue failure at Small Bore branches. Beyond the critical velocity instability takes over and the pipe vibrates critically.
c Mitigation of Acoustic Induced Vibration — AIV Detailed Acoustic Induced Vibration — AIV study shall be carried out by AIV Consultant based on the Multidiscipline responsibility Matrix as per Appendix-1. The direct solution, Equation 12is complex to work with, and the application of BCs Equation 9 results in a trivial solution due to the error in the assumption made to arrive at the governing equation, Equation 8and due to the nature of the BCs.McGraw-Hill, New York 2001, pp 178, 179, 1182, 1186.
The equations for the natural frequencies of Flow-induced vibration flow induced vibration of the pipe obtained shows that the natural frequency reduces as the flow tends towards the critical velocity. More light is shed on the phenomena of steady internal fluid flow exacerbating the vibration of pipelines and piping systems.
In order to minimize the modifications due to Flow Induced Vibration FIV requirements the following guidelines shall be followed during initial design of lines prone to Flow Induced Vibration FIV.
By continuing you agree to the.
, Prentice Hall, New Jersey 1993, pp 359-371, 727, 730.
The critical velocity they obtained experimentally by Dodds et al was 38.