RT Journal Article ID 7c2084a103c4e962 A1 Bukharin, V. B. A1 Dreitser, Guenrikh A. A1 Kraev, V. M. A1 Neverov, A. S. T1 Structure of Turbulent Gas Flow under Conditions of Hydrodynamic Nonstationarity JF Heat Transfer Research JO HTR YR 2000 FD 2000-03-01 VO 31 IS 1-2 SP 9 OP 12 AB A method of measurement is found and some experiments are made concerning the determination of the longitudinal and radial components of the air speed in a tube with a time history of the gas flow rate. A constant temperature thermoanemometer with an X-shaped movable probe was used. Different profiles of the longitudinal and radial velocity components, their fluctuations and for correlations are presented for accelerating and decelerating flows. It is shown that in unsteady processes these parameters differ substantially from their quasisteady values. The validity of the hydrodynamic unsteady parameter as an integral parameter for the generalization of experimental data is substantiated. PB Begell House LK https://www.dl.begellhouse.com/journals/46784ef93dddff27,5dc1f5b33358d2d5,7c2084a103c4e962.html