Open Queueing Networks

Managerial Approaches Toward Queuing Systems and Simulations - Advances in Mechatronics and Mechanical Engineering ◽

10.4018/978-1-5225-5264-2.ch005 ◽

2018 ◽

pp. 133-171

Keyword(s):

Performance Analysis ◽

Cycle Time ◽

Queueing Networks ◽

Cost Approach ◽

Work In Process ◽

Open Queueing Networks ◽

In Series ◽

Measures Of Performance

Systems often have two or more stages and a customer must go several stages before finalizing their service. The systems can be arranged in series or in network. Chapter 5 is dedicated specifically to the performance analysis of systems that have several stages both in series and those that have network arrangement; the theorems of Burke and Jackson are presented; the calculations of the flow and variability in a network and of the measures of performance (cycle time and work in process) are also exposed. Several codes are proposed in Scilab Language to perform calculations automatically. The chapter ends with a section devoted to identifying and analyzing the bottleneck in a system from a cost approach.

Download Full-text

Comparative Analysis of Analytical and Discrete-Event Simulation Models of Assembly Line Systems

Journal of Engineering Project and Production Management ◽

10.2478/jeppm-2019-0015 ◽

2019 ◽

Vol 9 (2) ◽

pp. 132-141

Author(s):

Melkamu Ambelu Biazen ◽

Sisay Geremew Gebeyehu

Keyword(s):

Performance Analysis ◽

Discrete Event Simulation ◽

Cycle Time ◽

Assembly Line ◽

Discrete Event ◽

Simulation Models ◽

Analysis Tool ◽

Decomposition Approach ◽

Event Simulation ◽

Work In Process

Abstract System-wide performance analysis of manufacturing setup helps a company to stay competitive. This can be done by selecting appropriate performance analysis tool which can save time and effort. As a problem assembly line systems are difficult to completely model and analyze using either of analytical or discrete-event simulation (DES) models. The main objective of this study is to analyze the distinct modeling capabilities of analytical modeling approach and DES approach so as to take their respective primacy for analysis of particular pertinent parameters suitable for Tana Communication (TC assembly line). Both analytical and discrete-event simulation models are developed for TC production process using decomposition approach and AnyLogic software. The results from the two models for work in process, queue cycle time, cycle time and resource utilization have high degree of agreement. By making reassignment of operators from the idle stage to the bottleneck stage the system waiting time and work in process is reduced by 12% and 13% respectively from the proposed model.

Download Full-text