Starting transients in second throat vacuum ejectors for high altitude testing facilities

Bharate, Ghanshyam; R, Arun Kumar

doi:10.1016/j.ast.2021.106687

Cited by 9 publications

(2 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Patent materials describe jet devices, including electors with nozzles placed in stationary disk supports [13,14] or rotating disk supports [15]. Supersonic electors for various purposes have been actively studied [16][17][18][19][20][21][22]. Examples of mesh nozzles used in designing electors are known [23][24][25].…”

Section: Literature Surveymentioning

confidence: 99%

Computational Fluid Dynamics (CFD) Simulation of Mesh Jet Devices for Promising Energy-Saving Technologies

et al. 2022

View full text Add to dashboard Cite

This paper discusses the development of mesh jet devices for hybrid turbines, including developing Euler's ideas, and considers a new patented version of a mesh jet device designed to create guiding devices for turbines. The research methods are based on simulations using CFD and additive technologies. An intermediate conclusion is that a new scientific direction for the study and creation of mesh jet control systems has been formed as part of developing Euler's ideas. Calculation methods showed possible improvements in the performance of jet devices, including the use of curved tubes proposed by Euler to create turbines. This study shows that at the nozzle or mixing chamber outlet, the jet can deflect by an angle from +180° to -180° within the geometric sphere. This study also shows that the scientific groundwork prepared by Euler is not yet fully understood. The ongoing research mainly focuses on creating multi-mode jet devices designed for control systems for mesh turbomachines. Here, power consumption from an external source can be reduced to save energy. Some results of ongoing studies can also be applied in other industries (for example, when creating hybrid propulsion systems or propulsors). The scientific novelty of this work consists of improving the design methodology of jet machinery and turbomachines. Doi: 10.28991/CEJ-2022-08-12-06 Full Text: PDF

show abstract

Section: Literature Surveymentioning

confidence: 99%

Computational Fluid Dynamics (CFD) Simulation of Mesh Jet Devices for Promising Energy-Saving Technologies

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Supersonic ejectors for various purposes have been actively studied [27][28][29]. The peculiarities of energy exchange in the mixing chamber were investigated [30,31]. Examples of the use of a mesh nozzle in the creation of ejectors are known [32].…”

Section: Introductionmentioning

confidence: 99%

Designing Mesh Turbomachinery with the Development of Euler’s Ideas and Investigating Flow Distribution Characteristics

Sazonov

Mokhov²,

Gryaznova³

et al. 2022

Civ Eng J

View full text Add to dashboard Cite

This research discusses developing an Euler turbine-based hybrid mesh turbomachinery. Within the framework of mechanical engineering science, turbomachinery classification and a novel method for mesh turbomachinery design were considered. In such a turbomachine, large blades are replaced by a set of smaller blades, which are interconnected to form flow channels in a mesh structure. Previous studies (and reasoning within the framework of inductive and deductive logic) showed that the jet mesh control system allows for operation with several flows simultaneously and provides a pulsed flow regime in flow channels. This provides new opportunities for expanding the control range and reducing the thermal load on the turbomachine blades. The novel method for performance evaluation was confirmed by the calculation: the possibility of implementing pulsed cooling of blades periodically washed by a hot working gas flow (at a temperature of 1000°C) and a cold gas flow (at a temperature of 20°C) was shown. The temperature of the blade walls remained 490–525°C. New results of ongoing research are focused on creating multi-mode turbomachinery that operates in complicated conditions, e.g., in offshore gas fields. Gas energy is lost and dissipated in the throttle at the mouth of each high-pressure well. Within the framework of ongoing research, the environmentally friendly net reservoir energy of high-pressure well gas should be rationally used for operating a booster compressor station. Here, the energy consumption from an external power source can be reduced by 50%, according to preliminary estimates. Doi: 10.28991/CEJ-2022-08-11-017 Full Text: PDF

show abstract

Fast vacuum plume prediction using a convolutional neural networks-based direct simulation Monte Carlo method

Cai

Zhang²,

Liu³

et al. 2022

Aerospace Science and Technology

View full text Add to dashboard Cite

Starting transients in second throat vacuum ejectors for high altitude testing facilities

Cited by 9 publications

References 20 publications

Computational Fluid Dynamics (CFD) Simulation of Mesh Jet Devices for Promising Energy-Saving Technologies

Computational Fluid Dynamics (CFD) Simulation of Mesh Jet Devices for Promising Energy-Saving Technologies

Designing Mesh Turbomachinery with the Development of Euler’s Ideas and Investigating Flow Distribution Characteristics

Fast vacuum plume prediction using a convolutional neural networks-based direct simulation Monte Carlo method

Contact Info

Product

Resources

About