Turbocharger performance simulation with optimized 1D model
journal contribution
posted on 2012-10-02, 15:00authored byXiaoyang Gong, Rui Chen
Turbocharging technique has played a critical role not only for improving automotive
engine performance, but also for reducing fuel consumption and exhaust emissions both in Spark
Ignition and Compression Ignition engines. In the research described in this paper, a 1D centrifugal
compressor model has been developed for simulating turbocharger flow and performance. The
model takes into account energy conservation and transfer which includes the losses determined
from the compressor geometry. The losses including incident loss, friction loss, clearance loss,
backward loss and volute loss were simulated by the thermodynamics model, rather than from the
characteristic performance curves obtained experimentally. The proposed model was validated
against experimental data and it showed simulating and experimental results are in very good
agreement at three different rotational speeds, in particular near the surge line, though the deviation
begins to increase as mass flow rate goes up. With current results, it has suggested the proposal is
suitable for predicting the compressor performance curves such as outlet pressure, efficiency and
losses for any centrifugal compressor. In addition, surge line obtained from the simulation result can be used to define stable operation range.
History
School
Aeronautical, Automotive, Chemical and Materials Engineering
Department
Aeronautical and Automotive Engineering
Citation
GONG, X. and CHEN, R., 2012. Turbocharger performance simulation with optimized 1D model. Advanced Materials Research, v.516-517 pp.692-708.