Project 027 Advanced Combustion (Area #3)
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2020-03-01
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Alternative Title:Advanced Combustion (Area #3)
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Abstract:The objective of this project was to provide advanced combustion testing of alternative jet fuels. We performed this advanced combustion testing to accomplish two goals. The first goal was to rank the lean blowout boundaries, ignition probabilities, and turbulent flame speeds of alternative fuels relative to conventional Jet A. The second goal was to produce data that could support the modeling and simulation tasks of other teams. For this second goal, data were measured as needed and as requested by the other teams. These data typically consisted of velocity field measurements, high speed flame images, and test rig boundary conditions. During this program we tested twenty total fuel mixtures. Sixteen of these fuels were pure (un-blended) fuels, known to the program as: A1, A2, A3, C1, C2, C3, C4, CS, S1, S2, S3, high TSI, C7, CB, C9, and n-dodecane. The A1, A2, and A3 fuels represent the range of conventional Jet A fuels. The other fuels have different physical and/or chemical properties. We also tested three different sets of blends: A2/C1 blends, A2/C5 blends, a C1/n-heptane blend, and a C1/n-dodecane blend.
During this program we demonstrated a clear sensitivity of lean blowout and ignition to fuel composition, we identified the key physical and chemical properties that correlated with lean blowout and ignition, and we provided validation data to the CFO teams.
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Main Document Checksum:urn:sha-512:05d64d3936387676eb29c0bf5bd3c146db7c029212be5978b94663200ed3153400ba74279b8b9226da8c86c6674b751d2e4d5d19786d8f89870b9d540b227cd9
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