根据特性计算仿真的层次结构，可以概括出一个仿真类属框架［4］。首先 为这3个层次的计算抽象出概括的基类，然后从这些抽象基类出发，根据不同的情况进行继 承和扩展得到不同抽象层次的子类，例如：由部件基类cpart派生出燃烧室类cbur，转子类c rotor，管道类cduct。燃烧室类又可以派生主燃烧室类和加力燃烧室类；转子类派生涡轮类 cturb和压气机类；压气机类派生高压压气机类、风扇类，而涡轮类派生出高压涡轮类 和低压涡轮类；管道类派生喷管oz，混合器类cmix，进气道类cinlet等。由工质流基类 cfluid派生出空气类cair和燃气类cgas。由流动关系基类cflow派生出顺算法类cseq，逆算 法类cinv，容积效应法类cvol；顺算法类又可以派生匹配工作点法类cmpoints等。

72R555-V116B-D304X VACUUM PUMP
72R634-P112-D402X PRESSOR
72R634-P181-D401X GASTPRESSOR
72R634-P181-D402CX PRESSOR
72R645-P112-D303X PRESSOR
72R645-P112-D401X PRESSOR
72R645-P181-D500X PRESSOR
72R645-P181-D501X PRESSOR
72R645-P181-D502X PRESSOR
72R645-V114-D303X VACUUM PUMP
72R645-V160-D303X VACUUM PUMP
72R650-P112-D500X PRESSOR
72R655-P112-D304X PRESSOR
72R655-P188-D501X ROCKING PISTON
72R655-V114-D303X VACUUM PUMP
72R655-V114-D304X VACUUM PUMP
72R655-V154A-D402CX VACUUM PUMP
72R655-V160-D304X VACUUM PUMP
74R130-P101-H200X PRESSOR
74R130-P101-H201X PRESSOR
74R130-P101-H203X PRESSOR
74R130-P114-H200X PRESSOR
74R130-P114-H201X PRESSOR
74R130-P114B-H201X PRESSOR
74R130-P114C-H201X PRESSOR OEM
74R130-P115-H200X PRESSOR
74R130-P117-H200X PRESSOR
74R135-P101-H200X PRESSOR
74R647-V101A-H601X VACUUM PUMP
75R135-V101A-H200X VACUUM PUMP
75R135-V102-H200X VACUUM PUMP
75R135-V103-H200X VACUUM PUMP
75R135-V103-H203X VACUUM PUMP
75R537-V254-H301X VUM PUMP
75R537-V254-H306X VACUUM PUMP
75R635-P101-H301X PRESSOR
75R635-P110-H301X PRESSOR
75R635-P127-H301X PRESSOR
75R637-P117A-H302X PRESSOR
75R640-P101-H301X PRESSOR
75R640-V106-H301X VACUUM PUMP
75R645-P101-H301X PRESSOR
75R645-P101-H302CX PRESSOR
75R645-P110A-H301X PRESSOR
75R647-P101-H301X PRESSOR
75R647-P101-H302CX PRESSOR
75R647-V101-H301X VACUUM PUMP
75R647-V101A-H301X VACUUM PUMP
75R732-110-H304X VACUUMPRESSOR
7HDD-10-M750X PRESSOR
7HDD-10-M853 PRESSOR
7HDD-11T-M750X P TANK/30 GAL
7HDD-11TA-M750X P TANK/30 GAL *
7HDD-11TC-M853 P TANK/30 GAL
7HDD-11TD-M853 P TANK/30 GAL
部件类和 工质流类通过流动关系类自身的方法联系起来。仿真的类属层次结构如图1所示，“目”字 形方框代表类，包括类名、属性和方法，纵向线段表示类的继承和派生关系，横向线段代表 类之间的联系。可以派生出需要的类别，就部件类而言，可以用 于单轴涡喷、双轴涡喷、双轴分开排气涡扇、双轴混合排气涡扇以及他们的加力型发动机等 不同类型的发动机；就工质流类而言，可以用于空气压缩机、燃气轮机等不同转动机械；就 流动关系类而言，可以适应顺算法、逆算法、容积效应法等不同方法。下面以采用顺算法的 双轴混合排气涡扇发动机为例，结合性能评定中具体的特性计算任务，介绍具体的建模仿真 实现过程。
7LDE-10-M750X PRESSOR
7LDE-10-M853 PRESSOR
7LDE-11T-M750X P TANK/30 GAL
7LDE-16-M750X PRESSOR
7LDE-16-M853 PRESSOR
7LDE-46S-M750X PRESSOR
7LDE-46T-M750X P/TANK
81R640-P101-H302CX ROCKING PISTON
81R640-P101-H311CX ROCKING PISTON
82R642-P112-H302CX ROCKING PISTON
82R642-P181-H302CX ROCKING PISTON
82R645-P107-H304X PRESSOR
82R645-PXXX-H304CX PRESSOR
85R637-P201-N311X ROCKING PISTONPRESSOR W/O CAPACITOR
85R637-XXX-XXXX PRESSOR
8AM-32A-FB20 AIR MOTOR 20:1 GEAR RATIO
8AM-32A-FC20 AIR MOTOR 20:1 GEAR RATIO
8AM-32A-FD20 AIR MOTOR 20:1 GEAR RATIO
8AM-32A-FF20 AIR MOTOR 20:1 GEAR RATIO
8AM-ARV-70 AIR MOTOR
8AM-ARV-71 AIR MOTOR
8AM-FRV-2A AIR MOTOR
8AM-FRV-2B AIR MOTOR
8AM-FRV-30A AIR MOTOR
8AM-FRV-40 AIR MOTOR
8AM-FRV-61 AIR MOTOR
8AM-NRV-28A AIR MOTOR
8AM-NRV-32A AIR MOTOR
8AM-NRV-42A AIR MOTOR
8AM-NRV-5B AIR MOTOR
8AM-NRV-79 AIR MOTOR
8AM-RV-50 AIR MOTOR
8HDM-10-M850X PRESSOR
8HDM-10-M853 PRESSOR
8HDM-11TC-M853 P TANK/30 GAL
8HDM-11TD-M853 P TANK/30 GAL
8HDM-30DTC-M853 P TANK/60GAL