Experimental measurements in Hartman oscillators

Porumbel, Ionut; Cuciumita, Cleopatra; Nechifor, Cristian; Kuncser, Radu; Cuciuc, Tudor

doi:10.1016/j.trpro.2018.02.031

Cited by 2 publications

(1 citation statement)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are studies of installations using several Hartmann "whistles". There are also studies of installations with two resonators, but one accelerating device [94].…”

Section: Practical Recommendationsmentioning

confidence: 99%

Hartmann–Sprenger Energy Separation Effect for the Quasi-Isothermal Pressure Reduction of Natural Gas: Feasibility Analysis and Numerical Simulation

Belousov,

Lushpeev,

Sokolov

et al. 2024

Energies

View full text Add to dashboard Cite

The present paper provides a brief overview of the existing methods for energy separation and an analysis of the possibility of the practical application of the Hartmann–Sprenger effect to provide quasi-isothermal pressure reduction of natural gas at the facilities within a gas transmission system. The recommendations of external authors are analyzed. A variant of a quasi-isothermal pressure regulator is proposed, which assumes the mixing of flows after energy separation. Using a numerical simulation of gas dynamics, it is demonstrated that the position of the resonators can be determined on the basis of calculations of the structure of the underexpanded jet without taking into account the resonator and, accordingly, without the need for time-consuming calculations of the dynamics of the processes. Based on the results of simulating the gas dynamics of two nozzle–resonator pairs installed in a single flow housing, it is shown that, in order to optimize the regulator length, the width of the passage between the two nearest resonators should be greater than or equal to the sum of diameters of the critical sections of the nozzles. Numerical vibroacoustic analysis demonstrated that the most dangerous part of the resonator is the frequency of its natural oscillations.

show abstract

“…There are studies of installations using several Hartmann "whistles". There are also studies of installations with two resonators, but one accelerating device [94].…”

Section: Practical Recommendationsmentioning

confidence: 99%

Hartmann–Sprenger Energy Separation Effect for the Quasi-Isothermal Pressure Reduction of Natural Gas: Feasibility Analysis and Numerical Simulation

Belousov,

Lushpeev,

Sokolov

et al. 2024

Energies

View full text Add to dashboard Cite

show abstract

Stress and Vibration Analysis of a PDC (Pulse Detonation Chamber)

Popa

Sima

2019

International Journal of Turbo &Amp; Jet-Engines

View full text Add to dashboard Cite

Pulse detonation engines work similar to pulsejets, with the major difference taking place in the combustion mechanism. Having detonation, instead of conventional combustion comes with certain benefits, but also, a couple of major issues which will be addressed in this paper. These changes come as a result of the increased amount of energy released by the explosive process, with much higher fluid velocities and temperatures that easily surpass those of conventional engines. These high values of the thermodynamic parameters prove to be a tough technological problem when it comes to producing this type of engines, so this paper aims at analyzing the evolution of these parameters throughout a working cycle of the Tangential Impulse Detonation Engine (TIDE) and how they affect the internal structure of the detonation chamber. The non-steady character of the thermodynamic parameters from a Computational Fluid Dynamics (CFD) simulation will be used a as a starting point for the Finite Element Analysis (FEA), which will help determine whether or not, the structure can withstand the immense load that comes with such violent processes. The final part of this article will provide optimization criteria to decrease the loads generated by the pulsed detonations.

show abstract

Experimental measurements in Hartman oscillators

Cited by 2 publications

References 11 publications

Hartmann–Sprenger Energy Separation Effect for the Quasi-Isothermal Pressure Reduction of Natural Gas: Feasibility Analysis and Numerical Simulation

Hartmann–Sprenger Energy Separation Effect for the Quasi-Isothermal Pressure Reduction of Natural Gas: Feasibility Analysis and Numerical Simulation

Stress and Vibration Analysis of a PDC (Pulse Detonation Chamber)

Contact Info

Product

Resources

About