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- W2323208591 abstract "In Japan, a feasibility study of the new booster engine called “LE-X” was conducted from 2005 to 2014. One of the key technologies involved in the development of the LE-X engine is a regenerative cooling design to produce enough power to drive the turbopumps. The LE-X engine employs an elongated chamber design to pick up enough heat energy in the regenerative cooling channels. In the current study, a fully conjugated combustion and heat transfer simulation was performed to validate the current numerical approach against a hot firing test of the regeneratively cooled combustion chamber of the LE-X engine. A threedimensional Reynolds-averaged Navier–Stokes simulation was used to consider the injection and combustion processes of propellants on the hot-gas side, heat conduction in the chamber wall, and cooling channel flows. The surface roughness effect was considered to account for the friction force and heat transfer due to the surface roughness. First, the implemented surface roughness model was validated against transcritical parahydrogen flows in electrically heated tubes. The computed wall temperature and pressure loss agreed well with the experimental results. Second, the conjugated combustion and heat transfer simulation was validated against the hot firing test of the LE-X combustion chamber. The computed result accurately predicted the chamber pressure, wall temperatures, pressure loss, and temperature gain in the regenerative cooling channels in the design phase. These results confirmed that the current numerical approach is promising for predicting the regenerative cooling performance in full-scale combustion chambers." @default.
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- W2323208591 date "2015-07-23" @default.
- W2323208591 modified "2023-09-23" @default.
- W2323208591 title "Regenerative Cooling Performance Analysis of the LE-X Engine Combustion Chamber" @default.
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- W2323208591 doi "https://doi.org/10.2514/6.2015-3760" @default.
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