.TRANSFORM.HeatExchangers.Utilities.Functions.logMean_der

Interface

function logMean_der
  input Real dTx "Temperature difference 1";
  input Real dTy "Temperature difference 2";
  input Real small_dT = 1.0 "small x or y";
  input Real tol = 0.05 "small difference x-y";
  input Real dx "derivatives of Temperature difference 1";
  input Real dy "derivatives of Temperature difference 2";
  output Real dlmTd "derivative of logarithmic mean";
end logMean_der;