US 12,492,717 B1
Device to reduce turbulent flow skin friction using carbon dioxide, riblets, and suction holes
Papa Abdoulaye Mbodj, Denver, CO (US)
Appl. No. 19/106,684
Filed by Papa Abdoulaye Mbodj, Denver, CO (US)
PCT Filed Mar. 7, 2024, PCT No. PCT/US2024/018773
§ 371(c)(1), (2) Date Feb. 26, 2025,
PCT Pub. No. WO2025/034258, PCT Pub. Date Feb. 13, 2025.
Claims priority of provisional application 63/531,164, filed on Aug. 7, 2023.
Int. Cl. F15D 1/00 (2006.01); F04D 29/66 (2006.01)
CPC F15D 1/008 (2013.01) [F15D 1/0035 (2013.01); F04D 29/667 (2013.01)] 4 Claims
OG exemplary drawing
 
1. An apparatus that is a device to reduce turbulent flow skin friction using carbon dioxide, riblets, and suction holes, the apparatus comprising:
a surface onto which a flow deflector with a maximum height of 120 micrometers is attached;
a plenum located under the surface into which the carbon dioxide is configured to be introduced and connected to an exhaust slot having a maximum height of 120 micrometers;
the riblets with a width between 70 and 200 micrometers and a height between 40 and 100 micrometers and coated with anions that are configured to attract the carbon dioxide and mounted on a thin-film with adhesive fixing them on the surface and with grooves facing a freestream, and placed in front of the exhaust slot;
the suction holes placed after the riblets, and the thin-film is connected to the plenum located under the surface; and
the carbon dioxide is configured to be ejected into the grooves of the riblets and the freestream is deflected on a top of the flow deflector.