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摘要
The issue of spatial averaging effect arises in CARS temperature measurements when the probe volume contains temperature gradients, a situation frequently encountered in turbulent reacting flows where flow patterns are irregular and temperature gradients are typically steep. In present work, a new dual-temperature fitting model is developed to deal with the spatial averaging effect and then applied to evaluate the measured pure rotational CARS spectra performed on a premixed flame of a Wolfhard-Parker slot burner. Comparing with the traditional single-temperature fitting model, an improved spectral fitting and therefore, temperature and concentration evaluation by using the dual-temperature fitting model, is demonstrated. Finally, the feasibility of the dual-temperature model is shown in turbulent spray flame.
- 出版日期2015
