Vibration reducing pipe junction

1. A method of reducing vibration in a process of delivering a fracturing fluid to a well head, comprising:

providing a pipe manifold comprising a plurality of pipe junctions,

each pipe junction comprising:

a first pipe section having a bore, a first inlet and an outlet, the bore having an internal diameter;

a second pipe section having a second inlet, the second pipe section attached to and extending from the first pipe section to form a junction between the first pipe section and the second pipe section, wherein the second pipe section is in fluid communication with the first pipe section and extends from the first pipe section at an angle in a range of from 10° to 90°; and

an enlarged zone in a medial portion of the first pipe section, the enlarged zone having a maximum internal diameter which exceeds the internal diameter of the bore of the first pipe section, and wherein when a first fluid stream is introduced into the first pipe section and a second fluid stream is introduced into the second pipe section, the first fluid stream and second fluid stream merge in the enlarged zone to form a combined fluid stream, wherein the pipe manifold is connected to a well head;

providing multiple displacement pumps having multiple pump crankshafts;

connecting the multiple displacement pumps to the plurality of pipe junctions of the pipe manifold; and

causing the multiple displacement pumps to deliver a fracturing fluid into the pipe manifold such that a transient periodic flow velocity is created by the multiple pump crankshafts, the transient periodic flow velocity causing vibrations in the pipe junctions when the first fluid stream and the second fluid stream merge in the enlarged zone to form a combined fluid stream in each pipe junction, and wherein the enlarged zone of each pipe junction reduces the vibrations caused therein by the transient periodic flow velocity created by the multiple pump crankshafts.