Lbnl-49367 Application of Automatic Differentiation for the Simulation of Nonisothermal, Multiphase Flow in Geothermal Reservoirs
نویسندگان
چکیده
Simulation of nonisothermal, multiphase flow through fractured geothermal reservoirs involves the solution of a system of strongly nonlinear algebraic equations. The Newton-Raphson method used to solve such a nonlinear system of equations requires the evaluation of a Jacobian matrix. In this paper we discuss automatic differentiation (AD) as a method for analytically computing the Jacobian matrix of derivatives. Robustness and efficiency of the ADgenerated derivative codes are compared with a conventional derivative computation approach based on first-order finite differences.
منابع مشابه
Application of Automatic Differentiation for the Simulation of Nonisothermal, Multiphase Flow in Geothermal Reservoirs
Simulation of nonisothermal, multiphase flow through fractured geothermal reservoirs involves the solution of a system of strongly nonlinear algebraic equations. The Newton-Raphson method used to solve such a nonlinear system of equations requires the evaluation of a Jacobian matrix. In this paper we discuss automatic differentiation (AD) as a method for analytically computing the Jacobian matr...
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تاریخ انتشار 2002