.Buildings.Fluid.CHPs.BaseClasses.Functions.polynomialtrivariate

Information

This function computes a trivariate fifth order polynomial. The polynomial has the form

y = a₁ + a₂ x₁² + a₃ x₁ + a₄ x₂² + a₅ x₂ + a₆ x₃² + a₇ x₃ + a₈ x₁² x₂² + a₉ x₁ x₂
+ a₁₀ x₁ x₂² + a₁₁ x₁² x₂ + a₁₂ x₁² x₃² + a₁₃ x₁ x₃ + a₁₄ x₁ x₃² + a₁₅ x₁² x₃ + a₁₆ x₂² x₃² + a₁₇ x₂ x₃ + a₁₈ x₂ x₃²
+ a₁₉ x₂² x₃ + a₂₀ x₁² x₂² x₃² + a₂₁ x₁² x₂² x₃ + a₂₂ x₁² x₂ x₃² + a₂₃ x₁ x₂² x₃² + a₂₄ x₁² x₂ x₃ + a₂₅ x₁ x₂² x₃ + a₂₆ x₁ x₂ x₃² + a₂₇ x₁ x₂ x₃

Interface

function polynomialtrivariate
  extends Modelica.Icons.Function;
  input Real x1 "Independent variable";
  input Real x2 "Independent variable";
  input Real x3 "Independent variable";
  input Real a[27] "Coefficients";
  output Real y "Result";
end polynomialtrivariate;

Revisions

• March 10, 2019, by Tea Zakula:
  First implementation.