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UID:0-238@aerospace.technion.ac.il

DTSTART;TZID=Asia/Jerusalem:20210728T133000

DTEND;TZID=Asia/Jerusalem:20210728T143000

DTSTAMP:20230417T065618Z

URL:https://aerospace.technion.ac.il/events/experimental-characterization-
 and-diagnostic-challenges-of-cathodic-are-jets/

SUMMARY:Experimental Characterization and Diagnostic Challenges of Cathodic
  Arc Jets
DESCRIPTION:Lecturer:Matar Rosen\n Faculty:Department of Aerospace Engineer
 ing\n Institute:Technion – Israel Institute of Technology\n Location:Cla
 ssroom 165\, ground floor\, Library\, Aerospace Eng. & https://technion.zo
 om.us/j/99050274097\n Zoom: \n Abstract: \n Details: \n Flow control- mani
 pulation of flow behavior have received significant research attention sin
 ce the beginning of boundary layer theory\, due to the notable drawbacks o
 f unplanned flow separation: acoustic noise problems\, drag increase\, lif
 t losses\, instabilities\, etc.  Flow control methods can be classified b
 y their technology and their form of flow perturbation. One of these techn
 ologies is plasma actuation: impulsively perturbing the flow via plasma wi
 th no moving parts\, low actuator mass and fast time response.\nA cathodic
  arc is a subset of electric arcs that results in electron emission and va
 porization of cathode material.  The Cathodic Arc Actuator (CAA) is a dev
 ice that generates cathodic arc jets. Due to its coaxial structure\, the p
 articles are accelerated in the direction of the symmetry axis- instead of
  the direction between electrodes. Although this technology has largely be
 en utilized for propulsion and material processing\, it can also be applie
 d to flow actuation and control. For the purpose of flow control the direc
 tion of the plasma generation creates a unique method of inserting perturb
 ations perpendicular to the flow.\nIn this study\, the CAA was applied to 
 a canonical separated flow\, the backward facing step. The influence of th
 e CAA on the flow\, along with detailed processing of the electrical measu
 rements for the purpose of characterizing the efficiency of the devise wil
 l be presented.
CATEGORIES:Seminars
LOCATION:Classroom 165\, ground floor\, Library\, Aerospace Eng. & https://
 technion.zoom.us/j/99050274097

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