Page 39 - DCAP601_SIMULATION_AND_MODELING

Sandeep Kumar, Lovely Professional University
Unit 2: Simulation of Continuous System (I)

Unit 2: Simulation of Continuous System (I) Notes

CONTENTS
Objectives
Introduction

2.1 Simulation of Continuous Systems
2.1.1 A Chemical Reactor
2.1.2 Numerical Integration vs Continuous System Simulation
2.2 Summary
2.3 Keywords
2.4 Self Assessment
2.5 Review Questions
2.6 Further Readings

Objectives

After studying this unit, you will be able to:
 Understand the simulation of continuous systems
 Describe Numerical integration vs continuous system simulation
 Explain the selection of integration formula

Introduction

CSSL(Continuous System Simulation Language) versions I, II, III, IV and V have been
commercially available since 1968. CSSL-I was developed for Jet Propulsion Labs in 1968. CSSL-
III was widely distributed from 1969-1975. CSSL-IV (interactive version) was developed by R.
Nilsen and ran on over 30 different computers. Currently CSSL-V is marketed by Simulation
Services International and available on PCs and workstations.
2.1 Simulation of Continuous Systems

Continuous System Simulation illustrates analytically and systematically how mathematical
models of dynamic systems, typically described by sets of either ordinary or partial differential
equations perhaps attached with algebraic equations, can be simulated on a digital computer.
Modern modelling and simulation environments alleviate the occasional user from having to
understand how simulation actually works. Once a mathematical model of a process has been
formulated, the modelling and simulation environment compiles and simulates the model, and
curves of result trajectories occur magically on the user’s screen. Yet, magic has a propensity to
fail, and it is then that the user must recognize what went wrong, and why the model could not
be simulated as predictable.

LOVELY PROFESSIONAL UNIVERSITY 33