Buildings.Fluid.Utilities.BaseClasses

Package with base classes for Buildings.Fluid.Utilities

Information

This package contains base classes that are used to construct the models in Buildings.Fluid.Utilities.

Extends from Modelica.Icons.BasesPackage (Icon for packages containing base classes).

Package Content

Name	Description
der_extendedPolynomial	Polynomial that is linearly extended at user specified values

Name

Description

der_extendedPolynomial

Polynomial that is linearly extended at user specified values

Buildings.Fluid.Utilities.BaseClasses.der_extendedPolynomial

Polynomial that is linearly extended at user specified values

Information

This function is the derivative of extendedPolynomial with respect to x.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
Real	x	x value
Real	c[:]	Polynomial coefficients
Real	xMin	Minimum x value for polynomial
Real	xMax	Maximum x value for polynomial
Real	der_x

Type

Name

Default

Description

Real

x value

Real

c[:]

Polynomial coefficients

Real

xMin

Minimum x value for polynomial

Real

xMax

Maximum x value for polynomial

Real

der_x

Outputs

Type	Name	Description
Real	der_y	Derivative dy/dx

Type

Name

Description

Real

der_y

Derivative dy/dx

Modelica definition

function der_extendedPolynomial "Polynomial that is linearly extended at user specified values" extends Modelica.Icons.Function; input Real x "x value"; input Real[:] c "Polynomial coefficients"; input Real xMin "Minimum x value for polynomial"; input Real xMax "Maximum x value for polynomial"; input Real der_x; output Real der_y "Derivative dy/dx"; protected Integer N = size(c,1) "Number of coefficients"; algorithm if x < xMin then der_y := 0; for i in 2:N loop der_y := der_y + (i - 1)*xMin^(i - 2)*c[i]; end for; elseif x < xMax then der_y := 0; for i in 2:N loop der_y := der_y + (i - 1)*x^(i - 2)*c[i]; end for; else der_y := 0; for i in 2:N loop der_y := der_y + (i - 1)*xMax^(i - 2)*c[i]; end for; end if; end der_extendedPolynomial;