1. A fluid transport system for a gas turbine engine, comprising:
a plenum configured to provide a fluid;
an airfoil having an internal cavity; and
a transfer tube arranged to transfer the fluid between the plenum and the internal cavity of the airfoil, the transfer tube including an inlet, an outlet, a cavity extending from the inlet to the outlet, and at least one partition wall dividing the cavity into multiple flow passages.
2. The system as recited in claim 1, wherein the cavity of the transfer tube follows a curved path between the inlet and the outlet.
3. The system as recited in claim 1, wherein the inlet and the outlet define non-parallel planes.
4. The system as recited in claim 1, wherein the inlet has a first opening geometry and the outlet has a second opening geometry that is different than the first opening geometry.
5. The system as recited in claim 1, wherein each of the multiple flow passages opens at the inlet and at the outlet.
6. The system as recited in claim 1, wherein the at least one partition wall divides the area of the inlet in to substantially equal inlet sub-areas.
7. The system as recited in claim 6, wherein the at least one partition wall divides the area of the outlet into substantially equal outlet sub-areas.
8. The system as recited in claim 1, wherein the at least one partition wall extends partially between the inlet and the outlet.
9. The system as recited in claim 1, wherein the at least one partition wall is solid and continuous.
10. A gas turbine engine, comprising:
a compressor section;
a combustor in fluid communication with the compressor section;
a turbine section in fluid communication with the combustor; and
a fluid transport system configured to transport pressurized fluid from the compressor section, the fluid transport system including:
a plenum connected to the compressor section to receive pressurized fluid from the compressor,
an airfoil having an internal cavity, and
a transfer tube arranged to transfer the pressurized fluid from the plenum into the airfoil, the transfer tube including an inlet, an outlet, a cavity extending from the inlet to the outlet, and at least one partition wall dividing the cavity into multiple flow passages.
11. The gas turbine engine as recited in claim 10, wherein the inlet has a first opening geometry and the outlet has a second opening geometry that is different than the first opening geometry.
12. The gas turbine engine as recited in claim 10, wherein each of the multiple flow passages opens at the inlet and at the outlet.
13. The gas turbine engine as recited in claim 10, wherein the at least one partition wall is solid and continuous.
14. The gas turbine engine as recited in claim 10, wherein the transfer tube extends across a secondary plenum.
15. The gas turbine engine as recited in claim 14, wherein the secondary plenum is at a lower pressure than the plenum and the internal cavity of the airfoil.
16. A method for managing flow in a fluid transport system for a gas turbine engine, the fluid transport system including a plenum configured to provide a fluid, an airfoil having an internal cavity, and a transfer tube arranged to transfer the fluid between the plenum and the internal cavity of the airfoil, the transfer tube including an inlet, an outlet and a cavity extending from the inlet to the outlet, the method comprising:
dividing the cavity into multiple flow passages to manage flow distribution from the inlet to the outlet.
17. The method as recited in claim 16, wherein the inlet has a first opening geometry and the outlet has a second opening geometry that is different than the first opening geometry.
18. The method as recited in claim 16, wherein each of the multiple flow passages opens at the inlet and at the outlet.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A livestock feeder, comprising: (a) a polymeric cylinder with an open top, an interior surface, and at least one feeding portal with a lower ledge in a vertical arcuate sidewall section, wherein the polymeric cylinder has a molded polymeric structure of vertical polymer reinforcing posts on the interior surface; and (b) a reinforcing annulus located along the interior surface beneath the lower ledge of the at least one feeding portal, the reinforcing annulus comprising multiple arcuate segments and having a radius of curvature substantially the same as a radius of curvature of the polymer cylinder at the interior surface, wherein the reinforcing annulus is secured by fasteners to the interior surface of the polymeric cylinder and provides horizontal hoop strength at the elevation of the lower ledge on the interior surface.
2. The feeder of claim 1, wherein the feeder is capable of withstanding a force exerted on the lower ledge of the at least one feeding portal by livestock feeding through the feeding portal.
3. The feeder of claim 1, wherein the polymeric cylinder has an upper rim defining the open top, and wherein feedstuff can be placed within the interior surface without disruption by the presence of the reinforcing annulus attached to the interior surface at the lower ledge of the feeding portal.
4. The feeder of claim 3, further comprising a second reinforcing annulus attached on the interior surface of the upper rim.
5. The feeder of claim 4, further comprising at least one vertical rib interconnecting the reinforcing annulus at the lower ledge of the at least one feeding portal and the second reinforcing annulus at the upper rim.
6. The feeder of claim 1, wherein polymeric cylinder is formed from high density polyethylene.
7. A method of using a reinforcing annulus comprising multiple arcuate segments, the method comprising the steps of: (a) placing the reinforcing annulus at a lower ledge of at least one feeding portal on an interior surface of a polymeric cylinder with an open top configured as a livestock feeder, wherein the polymeric cylinder has a molded polymeric structure of vertical polymer reinforcing posts on the interior surface; and (b) attaching the reinforcing annulus to the interior surface of the polymeric surface with fasteners proximate the lower ledge to withstand force of livestock seeking food through the feeding portal.
8. The method of claim 7, further comprising the steps of:
(c) placing a second reinforcing annulus at a rim adjacent the open top; and
(d) attaching the reinforcing annulus to the upper rim.
9. The method of claim 8, further comprising the steps of:
(e) attaching at least one vertical rib between the two reinforcing annuli.
10. The method of claim 7, wherein the reinforcing annulus has a diameter of from about 2.54 cm to about 7.62 cm.
11. The method of claim 7, wherein the reinforcing annulus has a radius of curvature substantially the same as a radius of curvature of the polymer cylinder at the interior surface.
12. The method of claim 7, wherein the polymeric cylinder is formed from high density polyethylene.