Research output: Contribution to journal › Article › peer-review
Forced Oscillations of a Pseudoshock in Transonic Gas Flow in a Diffuser. / Lipatov, I. I.; Liapidevskii, V. Yu; Chesnokov, A. A.
In: Fluid Dynamics, Vol. 56, No. 6, 11.2021, p. 860-869.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Forced Oscillations of a Pseudoshock in Transonic Gas Flow in a Diffuser
AU - Lipatov, I. I.
AU - Liapidevskii, V. Yu
AU - Chesnokov, A. A.
N1 - Funding Information: The study was carried out with the financial support of the Russian Foundation of Basic Research (project no. 19-01-00498). Publisher Copyright: © 2021, Pleiades Publishing, Ltd.
PY - 2021/11
Y1 - 2021/11
N2 - The mathematical model of barotropic gas flow based on the two-layer flow representation with the regions of supersonic core and near-wall boundary layer is applied to the description of shock-wave structures in channels and nozzles of variable cross-section. The unsteady pseudoshock model is written in the form of the system of five inhomogeneous conservation laws. The disturbance propagation velocities are determined and the sufficient conditions of the hyperbolicity of the equations of motion are formulated. The formation of quasistationary shock waves and pseudoshock front oscillations is simulated numerically in the cases of periodic injection or variations in the channel exit section. The model is verified by means of the comparison with the available experimental data on forced pseudoshock oscillations in a transonic channel.
AB - The mathematical model of barotropic gas flow based on the two-layer flow representation with the regions of supersonic core and near-wall boundary layer is applied to the description of shock-wave structures in channels and nozzles of variable cross-section. The unsteady pseudoshock model is written in the form of the system of five inhomogeneous conservation laws. The disturbance propagation velocities are determined and the sufficient conditions of the hyperbolicity of the equations of motion are formulated. The formation of quasistationary shock waves and pseudoshock front oscillations is simulated numerically in the cases of periodic injection or variations in the channel exit section. The model is verified by means of the comparison with the available experimental data on forced pseudoshock oscillations in a transonic channel.
KW - barotropic gas
KW - equations of long waves
KW - pseudoshock
KW - transonic flow
UR - http://www.scopus.com/inward/record.url?scp=85120177768&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/3a2e1c15-f626-3ae0-b800-58e3acfefce2/
U2 - 10.1134/S0015462821060094
DO - 10.1134/S0015462821060094
M3 - Article
AN - SCOPUS:85120177768
VL - 56
SP - 860
EP - 869
JO - Fluid Dynamics
JF - Fluid Dynamics
SN - 0015-4628
IS - 6
ER -
ID: 34855241