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Investigation of pressure gain characteristics of RDE with Tesla valve inlet scheme.
- Source :
-
Experimental Thermal & Fluid Science . Aug2023, Vol. 146, pN.PAG-N.PAG. 1p. - Publication Year :
- 2023
-
Abstract
- • Tesla valve inlet scheme is adopted. • Total pressure gains of kerosene/oxygen-enriched air RDE are measured. • Effects of air injector stiffness on total pressure gain are investigated. • Reasons for deviations of outlet total pressures measured by EAP and MCSP are analyzed. Total pressure gain is one of the most significant performance metrics for rotating detonation engines. In this study, a Tesla valve is introduced with the intention of suppression of pressure feedback to improve the total pressure gain of RDE. A Tesla RDE has larger total pressure gain than a baseline RDE in some cases of 1.3Kg/s and 1.0Kg/s for A 8 /A 3.2 of 0.25 because it can delay the onset of Longitudinal pulsed detonation (LPD). Compared with published data, kerosene/oxygen-enriched achieves slightly higher total pressure gain than gaseous fuels. The maximum total pressure gain measured using the Equivalent available pressure (EAP) is −6.84%. As injection stiffness decreases, total pressure gain increases towards zero. Injection stiffness tends to decrease with increasing velocity for the given mass flow rates of air and nozzle. The pressure of the combustor inlet is positively correlated with the product of the detonation wave velocity and the mass flux of the nozzle outlet. Values of outlet total pressure calculated using EAP and Mach corrected static pressure (MCSP) are nearly the same, and deviations of them are summarized. When the Mach number of the nozzle outlet and total pressure recovery coefficient are taken into consideration, MCSP decreases while EAP increases. [ABSTRACT FROM AUTHOR]
- Subjects :
- *INLET valves
*MACH number
*DETONATION waves
*AIR flow
*STATIC pressure
*DETONATORS
Subjects
Details
- Language :
- English
- ISSN :
- 08941777
- Volume :
- 146
- Database :
- Academic Search Index
- Journal :
- Experimental Thermal & Fluid Science
- Publication Type :
- Academic Journal
- Accession number :
- 163518752
- Full Text :
- https://doi.org/10.1016/j.expthermflusci.2023.110909