MSC. EASY5 Pressure Regulator 4. Review the example of a pressure regulator. Outlet orifice diameter: 0.025 oO Poppet(ball)diameter: 0.188 Seat diameter: 0.135 Or2 O PH Regulated pressure: 40+/-2 psia Damping orifice Ambient pressure: 8 psia Supply pressure: 150 psia nominal PR Fixed orIfice Supply temperature: 580 oF P1 Modeling and Simulation of Gas Systems with MSC EASY5 - Chart 26 MSC XSOFTWARE
MSC.EASY5 Modeling and Simulation of Gas Systems with MSC.EASY5 - Chart 26 Pressure Regulator Outlet orifice diameter: 0.025” Poppet (ball) diameter: 0.188” Seat diameter: 0.135” Regulated pressure: 40 +/- 2 psia Ambient pressure: 8 psia Supply pressure: 150 psia nominal Supply temperature: 580 oF 4. Review the example of a pressure regulator
MSC. EASY5 Create a Non-venting pressure Regulator Model 5. Add these components to your schematic pad Library G Component Miscellaneous Fluid Properties Boundary Conditions BD Downstream B C gd d Orifices ORS Orifice Orifice gd Orifice Area PA Poppet Valve Area (vS position) Nodes and volumes Node d Noces and∨ olumes VY Variab|e∨ olume Forces CD Net pressure force on piston d Forces PF Poppet Valve Aerodynamic Force d Forces FS Summation of forces Body dynamics PM Mass Dynamics for Single Mass T Simulated and accumulated CPu times Function Generators Analytic Function\Generator and yng) specfied Modeling and Simulation of Gas Systems with MSC EASY5 - Chart 27 MSC XSOFTWARE
MSC.EASY5 Modeling and Simulation of Gas Systems with MSC.EASY5 - Chart 27 Create a Non-venting Pressure Regulator Model 5. Add these components to your schematic pad: Library Group Component gd Miscellaneous GP Fluid Properties gd Boundary Conditions BD Downstream B.C. gd Orifices OR Orifice gd Orifices ORS Orifice gd Orifices ORL Orifice gd Orifice Area PA Poppet Valve Area (vs. position) gd Nodes and Volumes NO Node gd Noces and Volumes VY Variable Volume gd Forces CD Net Pressure Force on Piston gd Forces PF Poppet Valve Aerodynamic Force gd Forces FS Summation of Forces gd Body Dynamics PM Mass Dynamics for Single Mass is -- TI Simulated and accumulated CPU times gp Function Generators AF Analytic Function\Generator
MSC. EASY5 Component Configurations 6. Change the"Opening configuration of component OR from Fixed Diameter to variable area, external dynamics: OR-Component Data Table(CDT) Component gd/OR Orifice nt Description Component Qualifier厂 OR-Orifice Current Icon The orifice component is a general use comp Oritice modeling restrictions, orifices or valves. The state ZSW indicates whether the flow is line compressible subsonic(ZSw-3)or compressible Horizontal Forward Architecture Resistive i + of gas species:且 Fixed diameter arable area, internal dynamics arable area. extemal dynamics 7. Also change the following configurations: PA: Concentric with Seat Modeling and Simulation of Gas Systems with MSC EASY5 - Chart 28 MSC XSOFTWARE
MSC.EASY5 Modeling and Simulation of Gas Systems with MSC.EASY5 - Chart 28 Component Configurations 6. Change the “Opening” configuration of component OR from Fixed Diameter to Variable area, external dynamics: 7. Also change the following configurations: PA: Concentric with Seat
MSC. EASY5 Component Boundary Conditions Storage W Inlet or Exit Resistive Inlet or exit GD, HC and vc fluid ports: Always make ported connection, otherwise do not connect In general, like boundary conditions cannot be connected together. Components with both inlet and exit storage boundary conditions are labeled Components with both inlet and exit resistive boundary conditions are labeled. (R Components with inlet storage and exit resistive boundary conditions are labeled. R Modeling and Simulation of Gas Systems with MSC EASY5 - Chart 29 MSC XSOFTWARE
MSC.EASY5 Modeling and Simulation of Gas Systems with MSC.EASY5 - Chart 29 Storage Resistive W P Inlet or Exit S P W Inlet or Exit R S Component Boundary Conditions • In general, like boundary conditions cannot be connected together. • Components with both inlet and exit storage boundary conditions are labeled. • Components with both inlet and exit resistive boundary conditions are labeled. • Components with inlet storage and exit resistive boundary conditions are labeled.R S/R • GD, HC and VC fluid ports: Always make ported connection, otherwise do not connect
Connect Components MSC. EASY5 Connecting components is a simple process Select the“from” component, then select the“to” component 1. Connect oR to no Connect to any available No inlet port Examine the connection between OR and No by double-clicking or middle clicking on the connection line. The ported connection consists of four outputs are connected from OR to No, and four outputs connected from No to OR. the connection line is not labeled since more than one output variable is connected 2. Connect No to ors, to orl Connect from any available No exit port To select port, Right-H on the To component and select"Create Port Connection 3. Connect oRS to VY (use any available vY inlet port) 4. Connect orl to bd 1 ORL exit port, 1 BD inlet port, hence the connection is automatically made 5. Finish connecting components Connect WY(MassDynamics port) to CD (Volume2 port) Connect cd and pf and to fs · Connect pM to Fs · Connect pm to pa Connect are Pa to are OR and ArE PF Manually connect s out aF to PP Inlet1 oR and to PP P1 PF Manually connect PP Inlet No to PP_P2 Pl "Modeling and SimulatioTof Gas Systems with MSCEASY5 -Chart 30 MSC XSOFTWARE
MSC.EASY5 Modeling and Simulation of Gas Systems with MSC.EASY5 - Chart 30 Connect Components Connecting components is a simple process: • Select the “from” component, then select the “to” component 1. Connect OR to NO • Connect to any available NO inlet port • Examine the connection between OR and NO by double-clicking or middle clicking on the connection line. The ported connection consists of four outputs are connected from OR to NO, and four outputs connected from NO to OR. The connection line is not labeled since more than one output variable is connected. 2. Connect NO to ORS, to ORL • Connect from any available NO exit port • To select port, Right-H on the To component and select “Create Port Connection” 3. Connect ORS to VY (use any available VY inlet port) 4. Connect ORL to BD • 1 ORL exit port, 1 BD inlet port, hence the connection is automatically made. 5. Finish connecting components • Connect VY (MassDynamics port) to CD (Volume2 port) • Connect CD and PF and to FS • Connect PM to FS • Connect PM to PA • Connect ARE_PA to ARE_OR and ARE_PF • Manually connect S_Out_AF to PP_Inlet1_OR and to PP_P1_PF • Manually connect PP_Inlet1_NO to PP_P2_PF