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A system including a multi-tube fuel nozzle, including a plurality of tubes extending in an axial direction relative to a central axis of the multi-tube fuel nozzle, wherein each tube of the plurality of tubes includes an air inlet, a fuel inlet, and a fuel-air mixture outlet; and an inlet flow cond

A system including a multi-tube fuel nozzle, including a plurality of tubes extending in an axial direction relative to a central axis of the multi-tube fuel nozzle, wherein each tube of the plurality of tubes includes an air inlet, a fuel inlet, and a fuel-air mixture outlet; and an inlet flow conditioner, including a plate extending in a radial direction relative to the central axis of the multi-tube fuel nozzle; an outer wall extending circumferentially about the plate, wherein the outer wall is coupled to the plate; and a plurality of air openings in the plate, the outer wall, or a combination thereof, wherein the plurality of air openings are disposed upstream from the air inlets in the plurality of tubes.

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1. A system, comprising: a plurality of multi-tube fuel nozzles each having a plurality of tubes extending in an axial direction relative to a central axis of the plurality of multi-tube fuel nozzles, wherein each tube of the plurality of tubes comprises an air inlet, a fuel inlet, and a fuel-air mi

1. A system, comprising: a plurality of multi-tube fuel nozzles each having a plurality of tubes extending in an axial direction relative to a central axis of the plurality of multi-tube fuel nozzles, wherein each tube of the plurality of tubes comprises an air inlet, a fuel inlet, and a fuel-air mixture outlet; andan inlet flow conditioner, comprising: a plate extending in a radial direction relative to the central axis of the plurality of multi-tube fuel nozzles;an outer wall extending circumferentially about the plate, wherein the outer wall is coupled to the plate, wherein the plate extends radially inward from the outer wall toward a central region, and each of the plurality of multi-tube fuel nozzles is disposed at least partially radially between the outer wall and the central region of the plate; anda plurality of air openings in the plate, the outer wall, or a combination thereof, wherein the plurality of air openings are disposed upstream from the air inlets in the plurality of tubes. 2. The system of claim 1, wherein the plurality of air openings are smaller than the air inlets in the plurality of tubes. 3. The system of claim 2, wherein the plurality of air openings comprise axial air openings disposed in the plate and radial air openings disposed in the outer wall. 4. The system of claim 1, wherein the plurality of air openings comprise axial air openings disposed in the plate. 5. The system of claim 4, comprising an inner wall generally coaxial with the outer wall, wherein the inner wall is coupled to the central region of the plate, the axial air openings substantially cover the plate between the inner and outer walls, and each of the plurality of multi-tube fuel nozzles is disposed at least partially radially between the inner and outer walls. 6. The system of claim 5, comprising a plurality of radial supports extending between the inner and outer walls. 7. The system of claim 5, comprising a center fuel nozzle disposed in a central passage extending through the inner wall. 8. The system of claim 1, wherein the plurality of air openings comprise radial air openings disposed in the outer wall. 9. The system of claim 8, wherein the inlet flow conditioner comprises a turning guide vane disposed along the outer wall adjacent the radial air openings, and the turning guide vane is configured to turn an airflow from the radial direction to the axial direction. 10. The system of claim 1, comprising a radial mount coupled to the outer wall. 11. The system of claim 10, wherein the radial mount comprises a plurality of radial openings in the outer wall, a plurality of radial pins coupled to the outer wall, or a combination thereof. 12. The system of claim 11, comprising a fuel nozzle housing coupled to the outer wall via the radial mount, wherein the plurality of multi-tube fuel nozzles is disposed within the fuel nozzle housing. 13. The system of claim 1, comprising a combustor, a gas turbine engine, or a combination thereof, having the multi-tube fuel nozzle and the inlet flow conditioner. 14. A system, comprising: an inlet flow conditioner for a plurality of multi-tube fuel nozzles, wherein the inlet flow conditioner comprises: a plate extending in a radial direction relative to a central axis;an outer wall extending circumferentially about the plate, wherein the outer wall is coupled to the plate, the outer wall comprises a radial mount configured to couple to a fuel nozzle housing for the plurality of multi-tube fuel nozzles, the plate extends radially inward from the outer wall toward a central region, and each of the plurality of multi-tube fuel nozzles is configured to be positioned at least partially radially between the outer wall and the central region of the plate; anda plurality of air openings in the plate, the outer wall, or a combination thereof. 15. The system of claim 14, comprising the plurality of multi-tube fuel nozzles disposed in the fuel nozzle housing, wherein the radial mount couples the fuel nozzle housing with the outer wall of the inlet flow conditioner, wherein each fuel nozzle of the plurality of multi-tube fuel nozzles comprises a plurality of tubes extending in an axial direction relative to the central axis, wherein each tube of the plurality of tubes comprises an air inlet, a fuel inlet, and an fuel-air mixture outlet, wherein the plurality of air openings are disposed upstream from the air inlets in the plurality of tubes. 16. The system of claim 14, wherein the plurality of air openings are smaller than air inlets in a plurality of tubes of the plurality of multi-tube fuel nozzles. 17. The system of claim 14, wherein the inlet flow conditioner comprises an inner wall generally coaxial with the outer wall and coupled to the central region of the plate, the inlet flow conditioner comprises a plurality of radial supports extending between the inner and outer walls, the plurality of air openings comprises axial air openings disposed in the plate and radial air openings disposed in the outer wall, and each of the plurality of multi-tube fuel nozzles is configured to be positioned at least partially radially between the inner and outer walls. 18. The system of claim 17, wherein the inlet flow conditioner comprises a turning guide vane disposed along the outer wall adjacent the radial air openings. 19. The system of claim 14, wherein the radial mount comprises a plurality of radial openings in the outer wall, a plurality of radial pins, or a combination thereof. 20. A method, comprising: conditioning an airflow for a plurality of multi-tube fuel nozzles with an inlet flow conditioner, wherein the inlet flow conditioner comprises a plate extending in a radial direction relative to a central axis of the plurality of multi-tube fuel nozzles, wherein the inlet flow conditioner comprises an outer wall extending circumferentially about the plate and coupled to the plate, wherein the inlet flow conditioner comprises a plurality of air openings in the plate, the outer wall, or a combination thereof, wherein the plurality of air openings are disposed upstream from air inlets in a plurality of tubes of the plurality of multi-tube fuel nozzles, wherein the plate extends radially inward from the outer wall toward a central region, and each of the plurality of multi-tube fuel nozzles is disposed at least partially radially between the outer wall and the central region of the plate. 21. The method of claim 20, comprising flowing the airflow from the plurality of air openings of the inlet flow conditioner, through a chamber axially between the plate and the plurality of the plurality of multi-tube fuel nozzles, and into the plurality of air inlets in the plurality of tubes of the plurality of multi-tube fuel nozzles. 22. The method of claim 20, wherein each of the plurality of multi-tube fuel nozzles extends to the central region of the plate of the inlet flow conditioner. 23. The system of claim 1, comprising a chamber disposed axially between the plate of the inlet flow conditioner and the plurality of multi-tube fuel nozzles. 24. The system of claim 1, wherein each of the plurality of multi-tube fuel nozzles extends to the central region of the plate of the inlet flow conditioner. 25. The system of claim 14, comprising a chamber disposed axially downstream of the plate of the inlet flow conditioner, wherein the chamber is configured to be positioned axially upstream from the plurality of multi-tube fuel nozzles, and each of the plurality of multi-tube fuel nozzles is configured to extend to the central region of the plate of the inlet flow conditioner.