Inverse Modeling Toolkit: Numerical Algorithms
نویسندگان
چکیده
In 1994, ASHRAE began developing a guideline for measuring retrofit savings (GPC-14P). In support ofGuide line-14p, ASHRAE initiated RP-1050 to develop a toolkit for calculating linear, change-point linear, and multiple-linear inverse building energy models. The resulting Inverse Model ing Toolkit (IMT) can be usedaspart ofaprocedure to measure savings. This paper describes the numerical algorithms used to find general least squares regression, variable-base degree day, change-point, and combination change-point multivari able regression models in the IMT, as well as the equations used to estimate the uncertainty ojpredictingenergy usefor the purpose ofmeasuring savings using IMT models.
منابع مشابه
Solving random inverse heat conduction problems using PSO and genetic algorithms
The main purpose of this paper is to solve an inverse random differential equation problem using evolutionary algorithms. Particle Swarm Algorithm and Genetic Algorithm are two algorithms that are used in this paper. In this paper, we solve the inverse problem by solving the inverse random differential equation using Crank-Nicholson's method. Then, using the particle swarm optimization algorith...
متن کاملFall 2015: Computational and Variational Methods for Inverse Problems
Description: This course provides an introduction to the numerical solution of inverse problems that are governed by systems of partial differential equations (PDEs). The focus of the course is on variational formulations, ill-posedness, regularization, variational discretization, and largescale solution algorithms for inverse problems. Students will develop numerical implementations for model ...
متن کاملMathematical Modeling and Numerical Investigation of Heat Flux at the External Surface of Cylinder of an Internal Combustion Engine
Abstract: This study deals with modeling of heat flux at the external surface of combustion chamber wall in an internal combustion (IC) engine as a function of crank angle. This investigation results in an inverse heat conduction problem in the cylinder wall. Alifanov regularization method is used for solving this inverse problem. This problem study as an optimization problem in which a square...
متن کاملGlobally Convergent Numerical Methods for Coefficient Inverse Prob- lems for Imaging Inhomogeneities
How can we differentiate between an underground stone and a land mine? We discuss a class of methods for solving such problems. This class of methods concerns globally convergent numerical methods for Coefficient Inverse Problems, unlike conventional locally convergent algorithms. Numerical results are presented modeling imaging of the spatially distributed dielectric permittivity function in a...
متن کاملGenetic Algorithm (ga) Based Techniques for 2d Microwave Inverse Scattering
This paper deals with inverse scattering techniques based on genetic algorithms (GAs), and is devoted to microwave imaging and microwave nondestructive testing and evaluation (NDT/NDE). In the framework of near-field spatial-domain algorithms, a brief overview of current trends and future developments of the research work is given. Numerical results of selected simulations, modeling realistic g...
متن کامل