Design Considerations for Aerodynamically Quenching Gas Sampling Probes

[+] Author and Article Information
L. Chiappetta, M. B. Colket

United Technologies Research Center, United Technologies Corporation, East Hartford, Conn. 06108

J. Heat Transfer 106(2), 460-466 (May 01, 1984) (7 pages) doi:10.1115/1.3246694 History: Received June 02, 1982; Online October 20, 2009


An aerodynamic quench is the most rapid method for quenching temperature and pressure-dependent chemical reactions. Attempts have been made to quench gas samples aerodynamically, but many of these attempts have been unsuccessful because of a lack of understanding of the internal aerodynamics of sampling probes. A one-dimensional model developed previously by the authors has been used for the design and analysis of aerodynamically quenching probes. This paper presents in detail the important aerodynamic and heat transfer equations used in the model, a description of the method of solution, and the results of a sensitivity study. These calculations demonstrate the limitations and important trade-offs in design and operating conditions of probes using an aerodynamic quench.

Copyright © 1984 by ASME
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