Aleksandr A. Firsov  , Evgeniy V. Dolgov  , Ruslan G. Rakhimov  , Michael A. Shurupov  , Sergey B. Leonov

DOI Number XXX-YYY-ZZZ

Conference Number HiSST 2018_34401059

This paper presents the result of experimental and numerical study of long spark plasma actuator for mixing of the fuel with supersonic flow for scramjet applications. The afterspark channel decay in ambient air was studied using high speed schlieren system based on fast 8-frame electron-optical image converter camera. For the first time, it is directly demonstrated a strong correlation of jet instability with a local curvature of the discharge channel. Formed at the moment of breakdown, the small-scale perturbations of contact surface between the thermal cavity and surrounding gas lead to formation of small-scale gasdynamic perturbations, which, then, are amplified and transferred by the fast escaping jets caused by bends of discharge. Numerical simulation of mixing enhancement by long spark discharge in supersonic airflow was performed. It is shown that long spark discharge stretches the interface between airflow and transonic jet of a model fuel blown out from a wall-arranged injector in normal to wall direction.

Read the full paper >

In Categories: HiSST 2018, Hypersonic Flight Dynamics, Hypersonic Propulsion, Propulsion Systems and Components
Email
Print
LinkedIn
The paper above was part of  proceedings of a CEAS event and as such the author has signed a publication agreement to have their paper published in the repository. In the case this paper is found somewhere else CEAS always links to the other source.  CEAS takes great care in making the correct content available to the reader. If any mistakes are found  in the listings please contact us directly at papers@aerospacerepository.org and we will correct the listing promptly.  CEAS cannot be held liable either for mistakes in editorial or technical aspects, nor for omissions, nor for the correctness of the content. In particular, CEAS does not guarantee completeness or correctness of information contained in external websites which can be accessed via links from CEAS’s websites. Despite accurate research on the content of such linked external websites, CEAS cannot be held liable for their content. Only the content providers of such external sites are liable for their content. Should you notice any mistake in technical or editorial aspects of the CEAS site, please do not hesitate to inform us.