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Ground-based PIV and numerical flow visualization results from the Surface Tension Driven Convection ExperimentThe Surface Tension Driven Convection Experiment (STDCE) is a Space Transportation System flight experiment to study both transient and steady thermocapillary fluid flows aboard the United States Microgravity Laboratory-1 (USML-1) Spacelab mission planned for June, 1992. One of the components of data collected during the experiment is a video record of the flow field. This qualitative data is then quantified using an all electric, two dimensional Particle Image Velocimetry (PIV) technique called Particle Displacement Tracking (PDT), which uses a simple space domain particle tracking algorithm. Results using the ground based STDCE hardware, with a radiant flux heating mode, and the PDT system are compared to numerical solutions obtained by solving the axisymmetric Navier Stokes equations with a deformable free surface. The PDT technique is successful in producing a velocity vector field and corresponding stream function from the raw video data which satisfactorily represents the physical flow. A numerical program is used to compute the velocity field and corresponding stream function under identical conditions. Both the PDT system and numerical results were compared to a streak photograph, used as a benchmark, with good correlation.
Document ID
19930049078
Document Type
Conference Paper
Authors
Pline, Alexander D.
(NASA Lewis Research Center Cleveland, OH, United States)
Werner, Mark P.
(NASA Lewis Research Center Cleveland, OH, United States)
Hsieh, Kwang-Chung
(Sverdrup Technology, Inc. Brook Park, OH, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1991
Publication Information
Publication: In: Crystal growth in space and related optical diagnostics; Proceedings of the Meeting, San Diego, CA, July 22, 23, 1991 (A93-33051 12-29)
Subject Category
Materials Processing
Funding Number(s)
PROJECT: RTOP 694-03-00
CONTRACT_GRANT: NAS3-25266
Distribution Limits
Public
Copyright
Other
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