Probe for measuring parameters of a flowing fluid and/or multiphase mixture

A method to measure at least one parameter of a fluid flow in a confined or unconfined space, said method comprising:

• providing a probe adapted to be disposed in the fluid flow, wherein said probe comprises a tube having an open input end and an open output end for receiving a portion of the fluid flow and an array of at least two sensors, disposed at different axial locations along the tube, each of the sensors being adapted to measure an unsteady pressure propagating with the fluid flow within the tube at a corresponding axial location, each of said sensors providing a measured signal indicative of the unsteady pressure within the tube at said axial location of a corresponding one of said sensors, wherein the unsteady pressure propagates with the fluid flow;
• measuring said unsteady pressure using said sensors;
• and
• determining, in response to the measures signals, the slope of a convective ridge in k-ω plane;
• outputting, in response to the slope of the convective ridge, a velocity of the portion of the fluid flow passing through tube.

A probe for measuring at least one parameter of a fluid flow, said probe comprising:

• a probe portion adapted to be disposed in the fluid flow, said probe portion including:
• a tube having an open input end and an open output end for receiving a portion of the fluid flow;
• and
• an array of at least two sensor, disposed at different axial locations along the tube, and each measuring an acoustic pressure at a corresponding axial location, each of said sensor providing a measured signal indicative of the acoustic pressure propagating through the fluid flow within the tube at said axial location of corresponding one of said sensors, wherein the acoustic pressure propagates past the array of sensors;
• and
• a signal processor, responsive to said measured signals, which provides a signal indicative of the speed of sound propagating through the portion of the fluid flow passing through the tube, wherein the signal processor comprises logic, which calculates a phase fraction of fluid and/or gas portion of the fluid flow.

A probe for measuring at least one parameter of a fluid flow, said probe comprising:

• probe portion adapted to be disposed in the fluid flow, said probe portion including:
• a tube having an open input end and an open output end for receiving a portion of the fluid flow;
• and
• an array of at least two sensors, disposed at different axial locations alone the tube, and each measuring an acoustic pressure at a corresponding axial location, each of said sensors providing a measured signal indicative of the acoustic pressure propagating through the fluid flow within the rube at said axial location of a corresponding one of said sensors, wherein the acoustic pressure propagates past the array of sensors;
• and
• a signal processor, responsive to said measured signals, which provides a signal indicative of the speed of sound propagating through the portion of the fluid flow passing through the tube, wherein the signal processor, responsive to the speed of sound, determines a phase fraction utilizing a dispersion model.

A probe for measuring at least one parameter of a fluid flow, said probe comprising:

• a probe portion adapted to be disposed in the fluid flow, said probe portion including:
• a tube having an oven input end and an open output end for receiving a portion of the fluid flow;
• and
• an array of at least two sensors, disposed at different axial locations along the tube, and each measuring an acoustic pressure at a corresponding axial location, each of said sensors providing a measured signal indicative of the acoustic pressure propagating through the fluid flow within the tube at said axial location of a corresponding one of said sensors, wherein the acoustic pressure propagates past the array of sensors;
• and
• a signal processor, responsive to said measured signals, which provides a signal indicative of the speed of sound propagating through the portion of the fluid flow passing through the tube, wherein the signal processor determines the slope of an acoustic ridge in k-ω plane to determine the speed of sound propagating through the fluid flow.

A probe for measuring at least one parameter of a fluid flow, said probe comprising:

• a probe portion adapted to be disposed in the fluid flow, said probe portion including:
• a tube having an open input end and an open output end for receiving a portion of the fluid flow;
• and
• an array of at least two sensors, disposed at different axial locations along the tube, and each measuring an acoustic pressure at a corresponding axial location, each of said sensors providing a measured signal indicative of the acoustic pressure propagating through the fluid flow within the tube at said axial location of a corresponding one of said sensors, wherein the acoustic pressure propagates past the array of sensors;
• and
• a signal processor, responsive to said measured signals, which provides a signal indicative of the speed of sound propagating through the portion of the fluid flow passing through the tube, wherein the signal processor uses cross-correlation logic, in response to the measured signals, to determine the speed of sound propagating through the fluid flow.

A probe for measuring at least one parameter of a fluid flow, said probe comprising:

• a probe portion adapted to be disposed in the fluid flow, said probe portion including:
• a tube having an open input end and an open output end for receiving a portion of the fluid flow;
• and
• an array of at least two sensors, disposed at different axial locations along the tube, and each measuring an acoustic pressure at a corresponding axial location each of said sensors providing a measured signal indicative of the acoustic pressure propagating through the fluid flow within the tube at said axial location of a corresponding one of said sensors, wherein the acoustic pressure propagates past the array of sensors;
• and
• a signal processor, responsive to said measured signals, which provides a signal indicative of the speed of sound propagating through the portion of the fluid flow passing through the tube, wherein the signal processor, responsive to the speed of sound, determines particle/droplet size of the fluid flow utilizing a dispersion model.