Mitigation of vibration in pipe systems

A vibration suppression system for reducing liquid flow-induced vibration, the vibration suppression system comprising:

• a first pipe, a second pipe, and a flexible joint, the flexible joint connecting the first pipe and the second pipe for liquid flow from the first pipe through the flexible joint and into the second pipe, wherein the first pipe is positioned upstream of the flexible joint,
• wherein the first pipe and the second pipe are separate pipes;
• a circumferential hoop affixed to an interior wall of the first pipe adjacent to the flexible joint,
• wherein the circumferential hoop is affixed to the interior wall of the first pipe, at an interface of the first pipe and the second pipe;
• and
• a plurality of strakes attached to the circumferential hoop, the plurality of strakes extending downstream of the circumferential hoop, and oriented radially inwardly from the interior wall of the first pipe.

A method, comprising:

• mitigating, by a vibration suppression device, liquid flow-induced vibration within a first pipe connected to a second pipe by a flexible joint,
• wherein the first pipe and the second pipe are separate pipes, and
• wherein the vibration suppression device comprises:
• a circumferential hoop affixed to an interior wall of the first pipe, the first pipe positioned upstream of the second pipe,
• wherein the circumferential hoop is affixed to the interior wall of the first pipe, at an interface of the first pipe and the second pipe;
• and
• a plurality of strakes attached to the circumferential hoop, the plurality of strakes configured to extend axially downstream of the circumferential hoop, adjacent to the flexible joint, and angled radially inwardly from the interior wall of the first pipe.

A method of suppressing liquid flow-induced vibration within at least a first pipe, a second pipe, and a bellows connecting the first pipe to the second pipe;

• the method comprising:
• conducting fluid dynamics modeling of the first pipe and second pipe, each having a predetermined diameter, the first pipe being configured to flow liquid through the bellows and into the second pipe,
• wherein the bellows is flexible,
• wherein modeling elements include a hoop and a plurality of strakes attached to the hoop for determining optimal hoop and strake criteria to mitigate liquid flow-induced vibrations within the first pipe, the second pipe, and the bellows,
• wherein the first pipe and the second pipe are separate pipes;
• forming a hoop in accordance with modeling-determined criteria, including hoop thickness;
• forming and attaching a plurality of modeling-determined geometrically sized and angled strakes to the hoop,
• wherein the strakes are configured to extend axially downstream of the hoop, adjacent to the flexible joint, and angled radially inwardly from an interior wall of the first pipe;
• and
• securing the hoop to the interior wall of the first pipe in a location adjacent to and upstream of the bellows, in accordance with modeling-determined criteria,
• wherein the hoop is secured at an interface of the first pipe and the second pipe, and
• wherein the first pipe is positioned upstream of the second pipe.