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[The Diagnostics of Detonation Flow External Field Based on Multispectral Absorption Spectroscopy Technology]
Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|July 13, 2016
Summary
Multispectral absorption technology enables nonintrusive, real-time diagnostics of detonation flow fields. This method reconstructs dynamic temperature and H2O concentration, advancing detonation engine research and control.
Area of Science:
- * Spectroscopy
- * Fluid Dynamics
- * Combustion Science
Context:
- * Traditional sampling methods struggle with dynamic detonation flow fields.
- * Absorption spectroscopy offers nonintrusive, high-speed measurements.
- * Non-uniformities in detonation flow require advanced diagnostic techniques.
Purpose:
- * To develop a multispectral absorption-based method for detonating flow external field diagnostics.
- * To establish a reconstructed model of detonation flow field distribution.
- * To investigate the dynamic temperature and concentration variations in detonation flow.
Summary:
- * A multispectral absorption technique was developed for detonation flow diagnostics, utilizing four H2O absorption lines.
- * A detonation external flow testing system was established for a 80 mm valveless pulse detonation engine.
- * Real-time reconstruction of dynamic temperature distribution was achieved using high-frequency scanning and time-division multiplexing.
Impact:
- * Validates a novel diagnostic method for detonation flow fields.
- * Provides insights into detonation wave propagation and its effect on temperature and concentration.
- * Supports advancements in detonation engine control and mechanism research.
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