التفاصيل البيبلوغرافية
| العنوان: |
Simulation of the Development of Richtmyer–Meshkov Instability and Transition to Developed Turbulence. |
| المؤلفون: |
Zmushko, V. V., Polishchuk, M. I., Razin, A. N., Sinel'nikova, A. A., Shcherbakov, A. N. |
| المصدر: |
Fluid Dynamics; Jun2024, Vol. 59 Issue 3, p444-464, 21p |
| مصطلحات موضوعية: |
RICHTMYER-Meshkov instability, TURBULENCE, SHOCK tubes, SHOCK waves, TURBULENT mixing |
| مستخلص: |
A criterion for estimating the instant of transition from the stage of development of the Richtmyer–Meshkov instability to developed turbulence on rough contact interfaces of layered gas systems is proposed. A number of laboratory experiments are simulated. In the first series of experiments, the Richtmyer–Meshkov instability arises on two contact interfaces of a thin gas layer after passage of a shock wave. In the experiments, a thin layer (corrugated gas curtain) is formed by pumping a heavy gas (SF6) through a nozzle block across an air-filled shock tube. In the second series of experiments, the shock wave passes across the contact interface of two gases of different densities (air-SF6 and He-SF6 layerings) perturbed along a sinusoid. In this series of experiments, the end face of the tube is either connected to the atmosphere or closed by a rigid wall. Development of the Richtmyer–Meshkov instability and transition to turbulent mixing are simulated using the implicit large eddy (ILES) method by means of the MIMOZA technique. A comparison with the available experimental information is made. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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