Transcript Fisika Komputasi - Universitas Brawijaya

Fisika Komputasi
(Computational
Physics)
Agus Naba
Physics Dept. , FMIPA-UB
Content
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Introduksi
Computer Software Basics
Error and Uncertainties in Computations
Operasi Matrik
Solusi Persamaan Linier
Linear Least Square & Eigen Value
Integrasi Numerik
Diferensiasi Numerik
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AGUS NABA: Computaional Physics, Physics Dept., FMIPA-UB
INTRODUCTION
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Aim: how to do science with computers and
to teach some physics with computers
This is computational science but not
“computer science” (developing the hardware
and software tool for computational scientist
use) .
Computational science is interested in
computer applications in science and
engineering.
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AGUS NABA: Computaional Physics, Physics Dept., FMIPA-UB
Problem and Goal
Problems:
Most of physical problems are difficult or can not be
solved analitically
Goal:
to use computer to solve physical problems
numerically
to discuss rapidly convergent algorithms
to asses its precision and accuracy as computer can
compute with approximations only
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AGUS NABA: Computaional Physics, Physics Dept., FMIPA-UB
How Computational
Scientiests do science
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In classical approach, a scientist formulated a problem and solved
as mush as possible analitically.
A scientist formulates and plans the solutions of a problem with the
computer and program libraries as active collaborates.
Computers play a key role from the start by simulating the laws of
nature.
Computer is used to create problem solving environments, such as
Maple, Mathematica, Macsyma, Matlab, which hide most of details
from the users.
Computer is used to visualize the results of calculations with 2D and
3D plots.
Personal computer applications have value, such as numerical
spreadsheet.
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AGUS NABA: Computaional Physics, Physics Dept., FMIPA-UB