Component 77: Calculator

Specifications

Line connections
1	Signal entry 1
2	Signal entry 2
3	Signal exit

General User Input Values Physics Used Displays Example

General

Simple calculations can be done with this component. The input values for the calculation can be the values P, H or M of the input lines. Thereby, both the lines can use different values. The output values can also be P, H or M, whereby the type of the input and the output values need not be identical.

Expansion for flag FOPR:

The behaviour of the calculator can be defined via a specification matrix.

To do so, the flag FOPR has to be set to 13.

The specification matrix links up the two input signals related to the nominal values to one output signal related to the nominal value: Z/ZN = f (X/XN, Y/YN)

In the design case, ZN has to be specified here. XN and YN are determined by the program. As a double lookup is carried out, a normalization of the matrix is not necessary. FASSIGN allows to swap X and Y.

User Input Values

FMODE	Flag for Calculation mode für mode of calculation Design/Off Design Like in Parent Profile (Sub Profile option only) Expression =0: global =1: local off design (i.e. always off-design mode, even if global design mode was selected) =-1: local design
FOPR	Flag for the type of calculation Like in Parent Profile (Sub Profile option only) Expression =1: Addition L3=MUL1L1+MUL2L2 =2: Subtraction L3=MUL1L1-MUL2L2 =3: Multiplication L3=MUL1L1MUL2L2 =4: Division L3=MUL1L1/(MUL2L2) =5: set-maximum L3=MAX(MUL1L1, MUL2L2) =6: set-minimum L3=MIN(MUL1L1, MUL2L2) =7: Power L3=(MUL1L1) ^ (MUL2L2) =8: Arithmetic mean L3=SQRT((MUL1L1) + (MUL2L2)) =9: Geometric mean L3= SQRT (MUL1L1MUL2L2) =10: Harmonic mean L3=2/((1/MUL1L1) + ((1/MUL2L2))) =11: Quadratic mean L3= SQRT(((1/MUL1L1)^2 + ((1/MUL1L1)^2)/2) =12: Cubic mean L3= SQRT[3]((MUL1L1)^3 + (MUL2L2)^3)/2) =13: Matrix Z/ZN=f(X/XN, Y/YN)
MUL1	Coefficient for the first operand
MUL2	Coefficient for the second operand
FL1	Flag for the type of the first operand Like in Parent Profile (Sub Profile option only) Expression =1: Pressure =3: Enthalpy =4: Mass flow This flag is not relevant if an adaptation polynomial /adaption function is used.
FL2	Flag for the type of the second operand Like in Parent Profile (Sub Profile option only) Expression =1: Pressure =3: Enthalpy =4: Mass flow This flag is not relevant if an adaption polynomial /adaption function is used.
FL3	Flag for the result type Like in Parent Profile (Sub Profile option only) Expression =1: Pressure =3: Enthalpy =4: Mass flow =-1: Pressure (remaining = 1) =-3: Enthalpy (remaining = 1) =-4: Mass flow (remaining = 1) The last three values place not only the set value on the output line, but instead all the values. However, the other values are set to a dummy value of 1. This feature is especially useful when joining the calculator components together, because then one can avoid setting the dummy values with the component 33. Unless the result is to be transferred to a real line, only one of the first three values must be used. This flag is also relevant when an adaption polynomial / adaption function is used.
FASSIGN	Assignment for matrix usage Like in Parent Profile (Sub Profile option only) Expression =1: X=pin 1, Y=pin 2, Z=pin 3 =2: X=pin 2, Y=pin 1, Z=pin 3
ZN	Z (nominal)
FADAPT	Flag for using the adaptation polynomial ADAPT/ adaptation function EADAPT Like in Parent Profile (Sub Profile option only) Expression =0: Not used and not evaluated =1: Polynomial used [L3 = polynomial, for type of L3 see FL3] =1000: Not used, but ADAPT evaluated as RADAPT (Reduction of the computing time) = -1: Function used [L3 = function, for type of L3 see FL3] = -1000: Not used, but EADAPT evaluated as RADAPT (Reduction of the computing time)
EADAPT	Adaptation function
XN	X (nominal)
YN	Y (nominal)

Generally, all inputs that are visible are required. But, often default values are provided.

For more information on colour of the input fields and their descriptions see Edit Component\Specification values

For more information on design vs. off-design and nominal values see General\Accept Nominal values

Matrix

Specifications-Matrix MXMATRIX:

Z/ZN=f(X/XN. Y/YN)

Physics Used

Equations

All cases

if FOPR = 1, then {

Addition L3=MUL1*L1+MUL2*L2 }

if FOPR = 2, then {

Subtraction L3=MUL1*L1-MUL2*L2 }

if FOPR = 3, then {

Multiplication L3=MUL1*L1*MUL2*L2 }

if FOPR = 4, then {

Division L3=MUL1*L1/(MUL2*L2) }

if FOPR = 5, then {

Maximum L3=MAX(MUL1*L1,MUL2*L2) }

if FOPR = 6, then {

Minimum L3=MIN(MUL1*L1,MUL2*L2) }

Component Displays

Display Option 1

Example

Click here >> Component 77 Demo << to load an example.