Abstract
In a long, plane-parallel channel with single-row, inclined, oval-trench dimples on the wall, a periodic section with a relative length of 8 (the distance between centers of neighboring dimples), a width of 9, a height of 1, and a centrally located, inclined, oval-trench dimple with a length of 7.05, a width of 1.05, a depth of 0.25, and with variation in the inclination angle from 1° to 89° is considered. An anomalous intensification of a separated turbulent air flow in an inclined dimple at the Reynolds number of 104 is discovered. At an inclination angle of 60°, the maximum absolute value of negative friction in the middle longitudinal cross-section exceeds the friction in a plane-parallel channel by more than 2.5 times. The cause of this phenomenon is related to the formation of a high pressure drop between the closely located zones of stagnation and low pressure in the semispherical inlet segment of the dimple.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
