| Turbine Input | Description |
| CoolingFlwCharIn | Cooling flow Gas Characteristics Input,
5x1 vector (for each cooling flow) consisting of: - W - gas path flow [pps] - ht - enthalpy [BTU/lbm] - Tt - Total Temperature [degR] - Pt - Total Pressure [psia] - FARc - Combusted Fuel to Air Ratio [frac] This feature must be enabled, see Cooling Flow tab variable (CFlwEn_M) definition |
| GasPthCharIn | Gas Path Characteristics Input, 5x1 vector consisting of:
- W - gas path flow [pps] - ht - enthalpy [BTU/lbm] - Tt - Total Temperature [degR] - Pt - Total Pressure [psia] - FARc - Combusted Fuel to Air Ratio [frac] |
| PRmapIn | Map turbine Pressure Ratio, position on turbine map
Determines Pressure ratio, efficiency, and gas path flow. The value for this variable will need to be solved for by driving the flow error accross the engine to zero. |
| Nmech | shaft speed [rpm] |
| Turbine Output | Description |
| GasPthCharOut | Gas Path Characteristics Output, 5x1 vector consisting of:
- W - gas path flow [pps] - ht - enthalpy [BTU/lbm] - Tt - Total Temperature [degR] - Pt - Total Pressure [psia] - FARc - Combusted Fuel to Air Ratio [frac] |
| NErr | Normalized Error [frac], in a typical system this will
be driven to zero by an iterative solver |
| TrqOut | turbine Torque Output (lbf*ft), positive value for a turbine. |
| T_Data | Turbine internal calculation Data |
| Turbine Mask Variable | Description |
| X_T_PRVec_M | Turbine Map Pressure Ratio Vector (X-axis)(nx1) |
| Y_T_NcVec_M | Turbine Map Corrected Speed Vector (Y-axis)(mx1) |
| T_T_Map_WcArray_M | Turbine Map Flow Array (Wc=f(Nc,PR))(mxn) |
| T_T_Map_EffArray_M | Turbine Map Efficiency Array (Eff = f(Nc,PR))(mxn) |
| s_T_Nc_M | Corrected Speed Scalar Constant (T_Nc) |
| s_T_PR_M | Pressure Ratio Scalar Constant (T_PR) |
| s_T_Wc_M | Flow Scalar Constant (T_Wc) |
| s_T_Eff_M | Efficiency Scalar Constant (T_Eff) |
| CFlwEn_M | Cooling Flow Enable [check - enabled] |
| T_CoolFlwPos_M | Cooling Flow position [0 at inlet, 1 at exit](cx1)
With Cooling Flow Enabled, the turbine will expect cooling flow input vector lenght of c *5. See CoolingFlwCharIn definition |
| iDesign_M | Design fork (0, 1, 2)
0 - iDes Enabled, Calculate turbine map scalars based on design variables When iDesign is set to 0, scalar constants from the Map tab will not be used. Scalars calculated will be saved in the specified file (FVar_M). 1 - Scalar variables will be overwritten (mask Initialization) with values from a specified file (FVar_M). When iDesign is set to 1, scalar constants from the Map tab and the Design values from the iDesign tab will not be used. 2 - Scalar variables from the map tab will be used as the map scalars. When iDesign is set to 2, scalar constants from the Map tab will be used; Design values and file definitions from the iDesign tab will not be used. |
| NcDes_M | map Design Corrected Shaft Speed [rpm], design point corrected speed used in map |
| EffDes_M | Design Efficiency [frac], actual design point tubine efficiency |
| PRDes_M | map Design Pressure Ratio [frac], design point PR used in map |
| NDes_M | Design Shaft Speed [rpm], actual design point speed |
| FVar_M | File name for iDes Variables |
| SVar_M | iDes Variable Surname |
| NcNm_M | iDes Nc scalar variable name |
| WcNm_M | iDes Wc scalar variable name |
| PRNm_M | iDes PR scalar variable name |
| EffNm_M | iDes Eff scalar variable name |