Abonnement à la biblothèque: Guest
TsAGI Science Journal

Publication de 6  numéros par an

ISSN Imprimer: 1948-2590

ISSN En ligne: 1948-2604

INVESTIGATION OF NOZZLE GEOMETRY AND OUTFLOW REGIME EFFECT ON FLOW PARAMETERS AND TURBULENT JET NOISE BY THE HIGH-RESOLUTION RANS/ILES METHOD

Volume 47, Numéro 2, 2016, pp. 139-158
DOI: 10.1615/TsAGISciJ.2016017768
Get accessGet access

RÉSUMÉ

Joint flow simulations in conical, chevron, and biconical nozzles at subsonic and off-design supersonic jet outflow are carried out using the combined high-resolution Reynolds-averaged Navier–Stokes/implicit large-eddy simulation (RANS/ILES) method. Simulations are performed on grids of 2.8–4.5 × 106 cells. The temperature effects in the nozzle inlet on the flow in a jet, turbulence parameters, and noise are investigated. For all investigated jets, reasonable agreement of the simulations results with the experimental data for averaged flow and turbulence parameters is obtained. The effect of the nozzle geometry and the jet temperature on the static pressure and temperature fluctuations level in the jets is established. For subsonic jets, the integral noise level is in a good agreement with the experimental data. One-third octave spectra of the sound pressure acceptably coincides with the experimental results, depending on the nozzle type, jet temperature, and observation angle with numbers of Sh = 4–8. For off-design supersonic jets, satisfactory agreement with the simulations results from other studies on a fine grid by the integral noise level and narrowband spectrum is observed.

Dernier numéro

KIRILL IVANOVICH SYPALO−50TH ANNIVERSARY NUMERICAL STUDY OF THE DISTURBANCES GENERATED BY MICROJETS IN A SUPERSONIC FLAT-PLATE BOUNDARY LAYER Andrei Valerievich Novikov, Alexander Vitalyevich Fedorov, Ivan Vladimirovich Egorov, Anton Olegovich Obraz, Nikolay Nikolaevich Semenov ANALYSIS OF THE MOVING DETONATION INTERACTION WITH TURBULENT BOUNDARY LAYERS IN A DUCT ON THE BASIS OF NUMERICAL SIMULATION Vladimir Anatolievich Sabelnikov, Vladimir Viktorovich Vlasenko, Sergey Sergeyevich Molev EXPERIMENTAL STUDY OF COUNTERFLOW BLOWING IN HIGH-SPEED FLOW THROUGH AN ASYMMETRIC SLOT IN THE LEADING EDGE OF A SHARP WEDGE Eduard Borisovich Vasilevskii, Ivan Valeryevich Ezhov, Pavel Vladimirovich Chuvakhov ASYMPTOTIC SOLUTIONS TO HYPERSONIC BOUNDARY LAYER EQUATIONS ON A FLAT WING WITH A POINT OF INFLECTION ON THE LEADING EDGE Georgiy Nikolaevich Dudin, Aleksey Vyacheslavovich Ledovskiy WAVE MODEL OF ORGANIZED STRUCTURES IN A TURBULENT BOUNDARY LAYER ON A PLATE WITH ZERO LONGITUDINAL PRESSURE GRADIENT Vladimir Alekseevich Zharov, Igor Ivanovich Lipatov, Rami Salah Saber Selim NUMERICAL SIMULATION OF THE FLOW AROUND LANDSCAPE FRAGMENTS AND SOLUTION VERIFICATION Viktor Viktorovich Vyshinsky, Koang T'in' Zoan POLYNOMIAL REPRESENTATION OF THERMODYNAMIC PROPERTIES OF COMBINED FUEL SYSTEMS IN RAMJET SIMULATION MODELS Timur Romanovich Zuev, Mikhail Semenovich Tararyshkin A MODEL TEST METHODOLOGY FOR THE INVESTIGATION OF AN ELASTICALLY SCALED MAIN ROTOR Maxim Andreyevich Ledyankin , Sergey Anatolyevich Mikhailov, Dmitry Valeryevich Nedel'ko, Timur Arturovich Agliullin INDEX, VOLUME 51, 2020
Portail numérique Bibliothèque numérique eBooks Revues Références et comptes rendus Collections Prix et politiques d'abonnement Begell House Contactez-nous Language English 中文 Русский Português German French Spain