Velocimetry With Refractive-Index Matching For Complex Flow Configurations
Project Title:Velocimetry With Refractive-Index Matching For Complex Flow Configurations
Company:Scientific Research Associates, Inc.
Glastonbury, CT 06033
Principal Investigator:McDonald, Henry and Thompson, Brian E.
There is an overall need for velocity measurements in a wide range of applications
that have complex geometry, such as in VSTOL aircraft ducts, heat exchangers, pumps,
manifolds and rocket engines. A velocity measurement technique which uses laser-Doppler
anemometry and refractive-index-matching of the fluid and model materials would be
developed for complex flow configurations such as models of the space shuttle main
engine. Emphasis is placed on the SSME application because it has the complexity
required to prove the suitability of this aproach in a wide range of complex configurations
and because the detailed measurements would have intrinsic value in the improvement
and design of SSME components. Plexiglass models wuld be used with fluids that are
arranged to have an index of refraction similar to that of plexiglass and the flow
characteristics would be determined with a form of laser-Doppler velocimetry. Refractive-index-matching
techniques can be used to measure at internal locations where laser beams pass through
several interfaces and at locations in close proximity to walls. The proposed effort
would extend present capability to more complex configurations and larger flow rates.