ATTENTION

This FlexSim Community Forum is read-only. Please post any new questions, ideas, or discussions to our new community (we call it Answers) at https://answers.flexsim.com/. Our new Question & Answer site brings a modern, mobile-friendly interface and more focus on getting answers quickly. There are a few differences between how our new Q&A community works vs. a classic, threaded-conversation-style forum like the one below, so be sure to read our Answers Best Practices.


flexsim.com

Go Back   FlexSim Community Forum > FlexSim Software > Flexsim Student Forum
Downloads

Flexsim Student Forum Forum for discussion for Flexsim Students using the Flexsim Textbook.

  #1  
Old 11-30-2011
Jack Lai Jack Lai is offline
Flexsim User
 
Join Date: Nov 2011
Posts: 32
Downloads: 17
Uploads: 0
Thanks: 22
Thanked 0 Times in 0 Posts
Rep Power: 106
Jack Lai is on a distinguished road
Default problem on processing time

Hi, I try to do an exercise, which is a hand simulation on barge operation. In my model, I queue up barges according to their arrival time. And the output is the average waiting at the queue. However, after I tried some experiments, I found the average processing time are different from the input data.

The input data is based on an excel file and I calculated the average processing time is 2.4 hour. But after I put these data into my model, the result showed that the average processing time is around 1.9-2 hour. Also, the group(2 berths) average processing time is reduced to 1.4 hour. What's wrong in my model ??
Attached Thumbnails
Click image for larger version
Name:	excel.jpg
Views:	197
Size:	254.7 KB
ID:	1576   Click image for larger version
Name:	berth 1.jpg
Views:	178
Size:	49.0 KB
ID:	1577   Click image for larger version
Name:	berth 2.jpg
Views:	158
Size:	48.9 KB
ID:	1578   Click image for larger version
Name:	2 berth.jpg
Views:	148
Size:	48.9 KB
ID:	1579  
Attached Files
File Type: zip barge question.zip (907.3 KB, 166 views)
  #2  
Old 12-01-2011
Steven Hamoen's Avatar
Steven Hamoen Steven Hamoen is offline
Talumis, Flexsim Distributor, The Netherlands
 
Join Date: Aug 2007
Location: Soest, NL
Posts: 854
Downloads: 43
Uploads: 0
Thanks: 391
Thanked 661 Times in 379 Posts
Rep Power: 684
Steven Hamoen has a reputation beyond reputeSteven Hamoen has a reputation beyond reputeSteven Hamoen has a reputation beyond reputeSteven Hamoen has a reputation beyond reputeSteven Hamoen has a reputation beyond reputeSteven Hamoen has a reputation beyond reputeSteven Hamoen has a reputation beyond reputeSteven Hamoen has a reputation beyond reputeSteven Hamoen has a reputation beyond reputeSteven Hamoen has a reputation beyond reputeSteven Hamoen has a reputation beyond repute
Default

If you want to work with numbers behind the comma please use double's and not int's So now all your nice 1.4 and 2.5 are rounded to 1 and 2

int processing = /**/getlabelnum(item,"Processing time")/**/;
The Following 2 Users Say Thank You to Steven Hamoen For This Useful Post:
Kris Geisberger (12-06-2011)
  #3  
Old 12-01-2011
Jack Lai Jack Lai is offline
Flexsim User
 
Join Date: Nov 2011
Posts: 32
Downloads: 17
Uploads: 0
Thanks: 22
Thanked 0 Times in 0 Posts
Rep Power: 106
Jack Lai is on a distinguished road
Default

Haha, you are right, I made a careless mistake!! @@


Thread Thread Starter Forum Replies Last Post
Best way to have fluid processing time? JMEngelhart Q&A 1 10-25-2011 08:58 AM
How to use the crane like operator during setup and processing time? syseo Q&A 2 08-05-2011 12:09 PM
GlobalVariables & Processing Time shashanktrivedi Q&A 3 05-19-2011 11:54 PM
Custom GUI processing time input & script control shashanktrivedi Q&A 2 05-19-2011 10:28 AM
Robot processing Sung Kim Q&A 7 08-27-2008 06:48 AM


All times are GMT -6.
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Copyright 1993-2018 FlexSim Software Products, Inc.