Fan Beam Emission Tomography

En’Urga Inc., with the aid of a research grant from NASA,  is developing a Fan Beam Emission Tomography (FBET) system to obtain the local gas and soot concentrations and temperatures from path integrated radiation intensity measurements in laminar fires.  There are two components to the proposed work.  The first component is the design and development of the FBET instrumentation to measure mid infrared radiation signatures at multiple views and projections using three imaging spectrometers.  The second component is the development of deconvolution procedures to obtain local gas and soot concentration and temperature in the non-symmetric laminar fires from the radiation signatures. 

Further details of the project can be obtained from the following publications. 

1. Yudaya Sivathanu, Jongmook Lim, Vinoo Narayanan, and Rony Joseph, 2001, “Fan Beam Emission Tomography for Transient Fires” Proceedings of the Sixth International Microgravity Workshop, NASA/CP02991-210826, Cleveland, OH, pp. 369-372.

2. Lim, Y. Sivathanu, and D. Feikema, (2003), “Fan Beam Emission Tomography for Estimating Scalar Properties in Laminar Flames,” Proceedings of the 3^rd Joint Meeting of the U.S. Sections of The Combustion Institute, Paper No. D06.

3. Yudaya Sivathanu, Jongmook Lim, and Douglas Feikema, 2003, Fan Beam Emission Tomography for Laminar Fires,” Seventh International Workshop on Microgravity Combustion and Chemically Reacting Systems, NASA/CP-2003-212376, pp. 237-240.

4. Yudaya Sivathanu and Jongmook Lim, 2003, “Estimating Gas Temperature and Mole Fractions from Spectral Radiation Measurements in a Homogeneous Hot Gas Layer,” 2003 Propulsion Measurement Sensor Development Workshop, Huntsville, AL.