Buildings.Fluid.HeatExchangers.BaseClasses.Internal

Information

Function that internally solves a scalar equation.

Extends from Buildings.Utilities.Math.BaseClasses.OneNonLinearEquation (Determine solution of a non-linear algebraic equation in one unknown without derivatives in a reliable and efficient way).

Package Content

Name	Description
f_nonlinear
solve

Buildings.Fluid.HeatExchangers.BaseClasses.Internal.f_nonlinear

Information

Inputs

Type	Name	Default	Description
Real	x		Independent variable of function
Real	f_nonlinear_data[:]		Additional data for the function

Outputs

Type	Name	Description
Real	y	= f_nonlinear(x)

Modelica definition

redeclare function extends f_nonlinear
algorithm 
  y := epsilon_ntuZ(x, f_nonlinear_data[1],
       Buildings.Fluid.Types.HeatExchangerFlowRegime.CrossFlowUnmixed);
end f_nonlinear;

Buildings.Fluid.HeatExchangers.BaseClasses.Internal.solve

Information

Inputs

Type	Name	Default	Description
Real	y_zero		Determine x_zero, such that f_nonlinear(x_zero) = y_zero
Real	x_min		Minimum value of x
Real	x_max		Maximum value of x
Real	f_nonlinear_data[:]		Additional data for function f_nonlinear
Real	x_tol	100*Modelica.Constants.eps	Relative tolerance of the result

Outputs

Type	Name	Description
Real	x_zero	f_nonlinear(x_zero) = y_zero

Modelica definition

redeclare function extends solve
end solve;