ARENA General-purpose simulation package Process-oriented High-level Hierarchic Animation Model building –Drag-and-drop modules into model window –connect them, so define flow of entities –detail modules and entities in dialog boxes and in spreadsheet Run independent replications

Material Book: W.D. Kelton, R.P. Sadowski, P.A. Sadowski: Simulation with Arena, McGraw Hill, 1998 (with limited student edition of Arena on CD-Rom) + new edition Online help: Some guides, klick Start/Programs/Rockwell Software/Arena/Online Books Very useful examples: Open Arena and klick Help/Arena Help Topics/ klick Exploring Arena/Learning Arena with SMART Files

Project Bar (Basic Processes) Flowchart Modules Data Modules

Look at first Model MM1 with Assign and Record –Flowchart Modules Create – Process – Dispose / Assign – Record –Data Modules Entity – Queue – Resource – Variable –Animation –Connections –Run Conditions Running Model MM1 with Assign and Record –animated –fast Look at the report

Build your first model: M/U/1 – Queue, Drill 1.Drag and drop modules from the project bar Create (parts arrive) Station = queue + drill Delete (parts leave) 2.Complete the spreadsheets in the spreadsheet bar Define model features like distributions for interarrival times and service times, station type = queueing system Add suited names 3.Actualize data modules Add suited names, queueing discipline 4.Add some animations from the tool bar Nice icons in C:Programme/Rockwell Software/Arena / *.plb 5.Run - menu 6.Look at the results - reports

2. Complete the spreadsheets in the spreadsheet bar:

3. Actualize data modules Add suited names, queueing discipline

4. Add some animations from the tool bar Nice icons in C:Programme/Rockwell Software/Arena / *.plb

4. Add some animations from the tool bar Nice icons in C:Programme/Rockwell Software/Arena / *.plb

5. Run - menu

Variables, global, used in expressions –Predefined, e.g. TNOW : Simulation clock, NQ(queue ID) : numer of entities in the queue, NR(name) : number of busy resource units(servers) –User-defined in data module ``Variable´´ Attributes of Entities, user-defined in an ``Assign´´ data module, used in expressions Record, flowchart modul, collects data, defines statistical accumulators, stores data in them Example MM1 with Assign and Record

Decide module –Routes the entities in two different directions, depending on the value ``true´´ or ``false´´ of a logical expression Histograms –Continuous time statistics Example ``Histogram Continuous Time Decide´´

Writing Satistics into Files Example, ``Tally´´ is a discrete accumulator