NUMERICAL METHOD OF SOLUTION OF THE COEFFICIENT-INVERSE PROBLEM FOR UNSTEADY MOTION IN AN OIL PIPELINE

Consideration is given to the approach to identifi cation of the coeffi cient of hydraulic resistance of a linear portion of a main pipeline in transporting raw hydrocarbons. The problem of identifi cation is reduced to a class of fi nitedimensional-optimization problems. To solve them, the author proposes effi cient numerical methods of fi nitedimensional optimization of fi rst order. For this purpose, in the work, the author derives formulas for the components of the gradient of the target functional in the space of identifi ed parameters. The obtained values of the optimized vector can be used for construction of the identifi ed function from any class of functions with interpolation and approximation methods. Results of the conducted numerical experiments are given.
   
Author:  S. Z. Kuliev
Keywords:  distributed system, coefficient of hydraulic resistance, inverse problem, identifi cation problem, conjugate problem, functional gradient
Page:  486