IB CurveBicubic

This curve type is a function of two independent variables. Input consists of the curve name, the ten coefficients, and the minimum and maximum values for each of the independent variables. Optional inputs for curve minimum and maximum may be used to limit the output of the performance curve (e.g., limit extrapolation). The equation represented by the bicubic curve is: z = {C_1} + {C_2}x + {C_3}{x^2} + {C_4}y + {C_5}{y^2} + {C_6}xy + {C_7}{x^3} + {C_8}{y^3} + {C_9}{x^2}y + {C₁₀}*x{y^2} Above content copyright © 1996-2025 EnergyPlus, all contributors. All rights reserved. EnergyPlus is a trademark of the US Department of Energy.

Inputs

• coeffs [Required]

A list of coefficients for a bicubic curve from C1 to C10.

• params

Detail settings for this HVAC object. Use Ironbug_ObjParams to set input parameters, or use Ironbug_OutputParams to set output variables.

Outputs

• Curve

CurveBicubic