Title:
METHOD AND APPARATUS FOR REDUCING FLUID DRAG
Document Type and Number:
WIPO Patent Application WO/2020/106343
Kind Code:
A3
Abstract:
A novel mechanism for reducing boundary layer friction and inhibiting the effects of uncontrolled fluid turbulence and turbulent layer separation, thus reducing the body drag, kinetic energy losses and lowering engine and pump fuel consumption is proposed. It steps on the type of turbulence observed in the so-called in fluid dynamics "drag crisis". Plurality of device shapes and plurality of devices producing the wanted pure form of even plurality of counter rotating vortices extending into the flow, i.e. tubes, are presented and discussed in detail, contrasting with the prior art. Configurations of multiple devices for the purposes of drag and fuel reduction, including their simulations and experimental results are put forward. Additional embodiments of the resulting tubes disclose use on aircraft or vessel control surfaces as stall inhibitors, use in wind turbines as dynamic range extenders, as well as use in turbines in efficient cooling mechanisms.
Inventors:
FOTEV KRASSIMIR (US)
KISHEV RUMEN (US)
NIKOLOV GRIGOR (US)
KISHEV RUMEN (US)
NIKOLOV GRIGOR (US)
Application Number:
PCT/US2019/047066
Publication Date:
August 20, 2020
Filing Date:
August 19, 2019
Export Citation:
Assignee:
PEER BELT INC (US)
13 MARI LTD (BG)
13 MARI LTD (BG)
International Classes:
B63B1/32; B64C1/38; B64C21/10; F01D5/14; F04D29/68; F15D1/00
Foreign References:
| US20110186685A1 | 2011-08-04 | |||
| US4720239A | 1988-01-19 | |||
| DE202011106216U1 | 2012-01-12 | |||
| SU1086246A1 | 1984-04-15 | |||
| EP0543647B1 | 1998-01-21 | |||
| RU2313680C2 | 2007-12-27 |
Attorney, Agent or Firm:
WOLIN, Harris, A. (US)
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