Improved model to determine turbine and compressor boundary conditions with the method of characteristics

被引:11
|
作者
Katrasnik, T [1 ]
机构
[1] Univ Ljubljana, Fac Mech Engn, SI-1000 Ljubljana, Slovenia
关键词
turbocharger turbine; compressor; simulation; method of characteristics; variable gas properties;
D O I
10.1016/j.ijmecsci.2005.12.006
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
Method of characteristics is still a powerful tool to incorporate variety of boundaries appearing in the internal combustion engines in the wave action techniques. Striving to the higher accuracy of one-dimensional techniques for modelling of engine manifolds leads to the necessity of considering variable properties and concentration of the gas. Innovative algorithm for the simulation of a turbocharger gas turbine and compressor based on extended equations of the method of characteristics is presented in this paper. This algorithm enables consideration of variable inlet and outlet pressure as well as consideration of variable gas properties and concentration. Improved model assures much better conservation of mass flow rate, when variable gas properties are considered, at only slightly increased computational time. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码:504 / 516
页数:13
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