Geometric interpretation of the possible velocity vectors obtained with multiple‐sensor probes

A geometric interpretation for the operation of probes that use multiple sensors is presented. This interpretation provides a method for visualizing how the individual sensor reponse and the geometrical arrangement of the sensors are related to the measurements made with a given probe. The interpret...

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Bibliographic Details
Published in:The Physics of fluids (1958) 1985-02, Vol.28 (2), p.462-465
Main Author: Willmarth, William W.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fluid dynamics
Fundamental areas of phenomenology (including applications)
Instrumentation for fluid dynamics
Physics
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Summary:A geometric interpretation for the operation of probes that use multiple sensors is presented. This interpretation provides a method for visualizing how the individual sensor reponse and the geometrical arrangement of the sensors are related to the measurements made with a given probe. The interpretation also provides a simple explanation for the occurrence of multiple solutions of the nonlinear equations for a probe. It is shown that a measured set of three cooling velocities, using a three‐sensor hot‐wire probe, can be produced by as many as eight different velocity vectors, only one of which is the correct velocity vector.
ISSN:0031-9171
2163-4998
DOI:10.1063/1.865110