NDLI: Shock wave-boundary layer interaction in forced shock oscillations

Content Provider	Springer Nature Link
Author	Doerffer, Piotr Szulc, Oskar Magagnato, Franco
Copyright Year	2003
Abstract	The flow in transonic diffusers as well as in supersonic air intakes becomes often unsteady due to shock wave boundary layer interaction. The oscillations may be induced by natural separation unsteadiness or may be forced by boundary conditions. Significant improvement of CFD tools, increase of computer resources as well as development of experimental methods have again drawn the attention of researchers to this topic.To investigate the problem forced oscillations of transonic turbulent flow in asymmetric two-dimensional Laval nozzle were considered. A viscous, perfect gas flow, was numerically simulated using the Reynolds-averaged compressible Navier-Stokes solver SPARC, employing a two-equation, eddy viscosity, turbulence closure in the URANS approach.For time-dependent and stationary flow simulations, Mach numbers upstream of the shock between 1.2 and 1.4 were considered. Comparison of computed and experimental data for steady states generally gave acceptable agreement. In the case of forced oscillations, a harmonic pressure variation was prescribed at the exit plane resulting in shock wave motion. Excitation frequencies between 0 Hz and 1024 Hz were investigated at the same pressure amplitude.The main result of the work carried out is the relation between the amplitude of the shock wave motion and the excitation frequency in the investigated range. Increasing excitation frequency resulted in decreasing amplitude of the shock movement. At high frequencies a natural mode of shock oscillation (of small amplitude) was observed which is not sensitive to forced excitement.
Starting Page	10
Ending Page	15
Page Count	6
File Format	PDF
ISSN	10032169
Journal	Journal of Thermal Science
Volume Number	12
Issue Number	1
e-ISSN	1993033X
Language	English
Publisher	Science Press
Publisher Date	2003-01-01
Publisher Place	Beijing
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	unsteady transonic flow shock wave nozzle flow Mechanics, Fluids, Thermodynamics Engineering Fluid Dynamics Engineering Thermodynamics, Transport Phenomena
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Shock wave smearing by passive control

Shock wave strength reduction by passive control using perforated plates

The boundary layer interaction with shock wave and expansion fan

Lessons from rotor 37

Shock-boundary layer interaction control, predictions using a viscous-inviscid interaction procedure and a Navier-Stokes solver

Study of the unsteady condensation of moist air in shock tube

Effect of duct geometry on shock wave discharge

Effect of nonequilibrium condensation of moist air on transonic flow fields

Passive control of transonic flow fields with shock wave using non-equilibrium condensation and porous wall

Shock wave-boundary layer interaction in forced shock oscillations

Similar Documents

Shock wave smearing by passive control

Shock wave strength reduction by passive control using perforated plates

The boundary layer interaction with shock wave and expansion fan

Lessons from rotor 37

Shock-boundary layer interaction control, predictions using a viscous-inviscid interaction procedure and a Navier-Stokes solver

Study of the unsteady condensation of moist air in shock tube

Effect of duct geometry on shock wave discharge

Effect of nonequilibrium condensation of moist air on transonic flow fields

Passive control of transonic flow fields with shock wave using non-equilibrium condensation and porous wall

Shock wave-boundary layer interaction in forced shock oscillations