RT Journal Article
ID 3740066e71beb28b
A1 Mikheev, Nikolay  I.
A1 Davletshin, Irek  A.
A1 Faskhutdinov, R. E.
A1 Dushina, Olga A. 
T1 Separation Region Downstream of an Orifice in a Pulsating Flow
JF Heat Transfer Research
JO HTR
YR 2008
FD 2008-04-10
VO 39
IS 2
SP 175
OP 182
AB Results of experimental investigations of the structure of flow in a separation region under the conditions of external flow pulsations are presented. As the object of investigations we have selected a configuration that includes a bluff barrier attached to the wall. To ensure a nonresonant flow of the investigated range of frequencies, the experiment was carried out with a short channel in which an orifice was installed directly at the inlet. In the flow above the separation region velocity pulsations with a high and virtually constant, over the range of frequencies, relative amplitude of about 0.3 were created at a low level of pressure fluctuations. Experimental data on the structure of a turbulent separation flow under the conditions of superposed external flow velocity pulsations in a wide range of frequencies <i>f</i> = 0&minus;380 Hz were obtained and generalized in the work. The effect of a double decrease in the dimensions of the separation region in a pulsating flow in comparison with a stationary one has been revealed.
PB Begell House
LK https://www.dl.begellhouse.com/journals/46784ef93dddff27,5614054478a08bcd,3740066e71beb28b.html