Research output: Contribution to journal › Article › peer-review
Simulation of the Outflow of Supersonic Jets into a Rarefied Medium in Pulse Modes. / Зарвин, Александр Евгеньевич; Каляда, Валерий Владимирович; Яскин, Александр Сергеевич et al.
In: Instruments and Experimental Techniques, Vol. 67, 2025, p. 1051-1058.Research output: Contribution to journal › Article › peer-review
}
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
PY - 2025
Y1 - 2025
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.
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
ER -
ID: 64681579