MSC. EASY5 Connected Components Component Qualitie Description The artice component is a general use comp iMe il Opening Foed diometer Cancel Rotate and/or flip Bd oRL ORS, Pa & VY Icons Modeling and Simulation of Gas Systems with MSCEASY5 -Chart 31 MSC XSOFTWARE
MSC.EASY5 Modeling and Simulation of Gas Systems with MSC.EASY5 - Chart 31 Connected Components Rotate and/or flip BD, ORL, ORS, PA & VY icons A n alyticF u n c tion G e nerato S i mulated a n d a c cumlate d C PUtime s D o wnstream B C : P t otandy ( n g )speci f i e d O r ifce O r ifce O r ifce P o pet V a lveAra N o de V a riable V o lume(St o r a ge) F o rceoV o l u mes f o r2volu m e s S i ngleMas s ( h ardlim t s &frict i o n ) P P _Inlet1_ N O P o petVal v e A e rodynami c F orce F C _ForceOu t _ P F A R E_PA A R E_PA A X _ActPosO u t 2 _PM S _ Out_AF S _ Out_AF
MSC. EASY5 Complex Connections Connections between the GP components are usually the connection of a single output of thefrom"component to a single input of the"to"component. The real strength of msc easy5 is its ability to use a single connection to represent a physical association between two components of a physical system. Examples -Hydraulic fluid flowing from a valve into a heat exchanger Electric power flowing from a transmission line to a transformer Mechanical power flowing from a drive shaft to a differential Modeling these associations requires multi-variable, bi-directional information passing between the component models Example: (Hydraulic connection-simplified Flow rate Valve Temperature Heat Component Pressure Exchanger Modeling and Simulation of Gas Systems with MSC EASY5 - Chart 32 MSC XSOFTWARE
MSC.EASY5 Modeling and Simulation of Gas Systems with MSC.EASY5 - Chart 32 • Connections between the GP components are usually the connection of a single output of the “from” component to a single input of the “to” component. • The real strength of MSC.EASY5 is its ability to use a single connection to represent a physical association between two components of a physical system. Examples: – Hydraulic fluid flowing from a valve into a heat exchanger – Electric power flowing from a transmission line to a transformer – Mechanical power flowing from a drive shaft to a differential • Modeling these associations requires multi-variable, bi-directional information passing between the component models. Example: (Hydraulic connection - simplified): Valve Component Heat Exchanger Flow rate Temperature Pressure Complex Connections
MSC. EASY5 Port connections A component port is a collection of variables (both inputs and outputs ) that can be grouped to represent an interface to a physical connection a port connection between a port on one component to a port on a second component consists of: A connection of each output variable of either port to the input of the other port with the same quantity name(ignoring the port name Ports are named(e.g,“"ln,”“out“ Shaft") and are part of the MSc.EAsY5name: PortEla Quantity Name=P 少PnPD Component=PD Conventional names(W for flow rate, etc )and ports make automatic connection possible Also can check for complete connection -i.e. wont misconnect W= flow rate to W= shaft speed because rest of port names don't match Modeling and Simulation of Gas Systems with MSC EASY5 - Chart 33 MSC XSOFTWARE
MSC.EASY5 Modeling and Simulation of Gas Systems with MSC.EASY5 - Chart 33 • A component port is a collection of variables (both inputs and outputs) that can be grouped to represent an interface to a physical connection • A port connection between a port on one component to a port on a second component consists of: – A connection of each output variable of either port to the input of the other port with the same quantity name (ignoring the port name) • Ports are named (e.g., “In” “Out” “Shaft”) and are part of the MSC.EASY5 name: Port Connections • Conventional names (W for flow rate, etc.) and ports make automatic connection possible • Also can check for complete connection – i.e. won’t misconnect: – W = flow rate to W = shaft speed because rest of port names don’t match Quantity Name=P P_In_PD Port=In Component=PD
MSC. EASY5 Component Pins Aid Connection Connection points on components are called pins Pins can be associated with ports so that when a connection is made to a component, the connection attaches at the appropriate place on the icon MSC EASY5 pneumatic components use the following convention for pins to help identify what kind of connection can be made Storage Outlets Resistive Storage W Inlets Resistive Connections must be made from Out ports to In ports, and from storage to resistive or resistive to storage This translates to: filled pins connect to unfilled pins of the opposite color Modeling and Simulation of Gas Systems with MSC EASY5 - Chart 34 MSC XSOFTWARE
MSC.EASY5 Modeling and Simulation of Gas Systems with MSC.EASY5 - Chart 34 Component Pins Aid Connection Storage Storage Resistive Resistive } } Outlets Inlets • Connection points on components are called pins. • Pins can be associated with ports, so that when a connection is made to a component, the connection attaches at the appropriate place on the icon. • MSC.EASY5 pneumatic components use the following convention for pins to help identify what kind of connection can be made. • Connections must be made from Out ports to In ports, and from storage to resistive or resistive to storage. • This translates to: filled pins connect to unfilled pins of the opposite color
MSC. EASY5 Gas Properties Components GP and GM One and only one GP component is required when using any GD components Defines units, equation of state, gases present in first makeup, ambient temperatures, and pressures GM components may be used to define additional makeups. Each component that models fluid flow has an input parameter called Mul(make-up index). Component GD/GP always defines mul=1 I GP-Component Data Table(CDT) Component gd/GP Gas Properties alue/r UN GP English (1) Units Flag(D: Metric. 1: English) Ideal (1) Ideal, built-in Lee-Kestler, user-defined or steam tables GAS GP 1 Ambient Temperature deg C(deg月 PAM GP 15 Ambient Pressure(for calc of physical props-not a B. C for ary component) bar(psia) 0075 Reference density for sigma'dp kgm(Ibm/3) No(O) Ovemde Orifice Switch State ICs Flag(0: no. 1: yes) Disable moisture phase change (0) Disable moisture phase change by freezing all MC. SwC states if-0 SSTolerance GP Steady-state RMS error (used if >0 end if SS TOLERANCE is not in aux input file Modeling and Simulation of Gas Systems with MSC EASY5 - Chart 35 MSC XSOFTWARE
MSC.EASY5 Modeling and Simulation of Gas Systems with MSC.EASY5 - Chart 35 Gas Properties Components GP and GM • One and only one GP component is required when using any GD components • Defines units, equation of state, gases present in first makeup, ambient temperatures, and pressures • GM components may be used to define additional makeups. Each component that models fluid flow has an input parameter called MUI (make-up index). Component GD/GP always defines MUI=1. A X _ActPosO u t 2 _PM A R _AreaOut _ OA S _ Out_AF P r esRgUn c o n nectd( 0 )