TY - JOUR

T1 - Simulation of the Outflow of Supersonic Jets into a Rarefied Medium in Pulse Modes.

AU - Зарвин, Александр Евгеньевич

AU - Каляда, Валерий Владимирович

AU - Яскин, Александр Сергеевич

AU - Дубровин, Кирилл Алексеевич

AU - Деринг, Екатерина Даниловна

AU - Художитков, Виталий Эдуардович

N1 - This study was performed at the Institute of Theoretical and Applied Mechanics, Siberian Branch, Russian Academy of Sciences, on the equipment of the Collective Use Center Applied Physics of Novosibirsk State University with financial support from the Russian Science Foundation (grant No. 22-19-00750) for the implementation of the submillisecond range valve and the Ministry of Science and Higher Education of the Russian Federation (project No. FSUS 2025-0008) for the implementation of the second range valve.

PY - 2024

Y1 - 2024

N2 - The use of electromagnetic valves for generating pulsed flow modes of a high-density supersonic jet in the second and submillisecond ranges is analyzed. It has been shown that “slow” second-range valves do not allow achieving a quasi-stationary mode with a high gas flow rate compared to a stationary outflow; submillisecond-range “fast” valves generate gas pulses with parameters necessary to simulate high-flow conditions at background gas pressures that do not overload the high-vacuum pumping system. It is found that the submillisecond valve provides the ability to simulate instantaneous flow rates of up to several tens of grams of a product per second in a pulse at pressures in the prechamber of up to 2 MPa and a pressure in the surrounding space of 1–3 Pa. A set of sonic and supersonic nozzles has been implemented with an electromagnetic valve device and power-supply and control systems that provide the gas outflow from the nozzle prechamber during a controlled period of time from 0.3 to 1.5 ms with a given duty cycle varying from several tens to thousands. The generated gas pulses have a trapezoidal shape with a quasi-stationary core.

AB - The use of electromagnetic valves for generating pulsed flow modes of a high-density supersonic jet in the second and submillisecond ranges is analyzed. It has been shown that “slow” second-range valves do not allow achieving a quasi-stationary mode with a high gas flow rate compared to a stationary outflow; submillisecond-range “fast” valves generate gas pulses with parameters necessary to simulate high-flow conditions at background gas pressures that do not overload the high-vacuum pumping system. It is found that the submillisecond valve provides the ability to simulate instantaneous flow rates of up to several tens of grams of a product per second in a pulse at pressures in the prechamber of up to 2 MPa and a pressure in the surrounding space of 1–3 Pa. A set of sonic and supersonic nozzles has been implemented with an electromagnetic valve device and power-supply and control systems that provide the gas outflow from the nozzle prechamber during a controlled period of time from 0.3 to 1.5 ms with a given duty cycle varying from several tens to thousands. The generated gas pulses have a trapezoidal shape with a quasi-stationary core.

UR - https://www.mendeley.com/catalogue/915e1377-d756-34e5-b547-537d7c92421e/

UR - https://link.springer.com/article/10.1134/S0020441224701550

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85218218911&origin=inward&txGid=ad93cdecda26dcb5db9e191f945abbeb

UR - https://www.elibrary.ru/item.asp?id=80289247

U2 - https://doi.org/10.1134/S0020441224701550

DO - https://doi.org/10.1134/S0020441224701550

M3 - Article

VL - 67

SP - 1051

EP - 1058

JO - Instruments and Experimental Techniques

JF - Instruments and Experimental Techniques

SN - 0020-4412

IS - 5

ER -