An Integration of WebBased GUI and Flow Model for A Hydroinformatics System

1
An Integration of Web-Based GUI and Flow Model
for A Hydroinformatics System

• Ho-Cheng Lien, Lung-Cheng Lee, Yi-Haur Shiau,
  Cherng-Yeu Shen, Ren-Jieh Shih, Whey-Fone Tsai
  and Peter Lyu
• The National Center for High-Performance
  Computing, Hsinchu, Taiwan, R.O.C.

2
Objective

• To develop a distributed web-based computing
  environment.
• To develop a web-based Graphic User Interface
  (GUI) to the flow model, U2RANS.
• To integrate the web-based GUI and flow model
  into a three-tiered system, which contains a
  client application, a web server application, and
  a solver application.

3
Web-Based GUI Architecture
4
Client Application

• The client application is composed of many web
  pages that provide the user-friendly interface to
  define the parameters of flow model and
  properties of fluid.
• The major portion of the web pages is written by
  the HyperText Markup Language (HTML), and a few
  Java Script and Java Applet are used to improve
  the interaction capability on the browser.

5
Middle-ware Application
(1 of 2)

• The middle-ware application contains many Common
  Gateway Interface (CGI) programs which are to
  accomplish the requests from the client site.
• The tasks of middle-ware site include the script
  file generation, data format conversion and
  management of data file.

6
Middle-ware Application
(2 of 2)

• Working flow of data format conversion.

7
Server Application

• The flow model and its pre-processor are
  installed in the supercomputers as the server
  site.
• The working flow of sever application.

8
Demonstrations

• The simulation of T-junction flow field is used
  as a demonstration
• The geometry of T-junction.

9
Interactive Web-based GUI
(1 of 4)
Guideline
Input Parameter
Object VRML
10
Interactive Web-based GUI
(2 of 4)
Grid Interface Management
Grid Interface Position
11
Interactive Web-based GUI
(3 of 4)
Boundary Condition Management
Boundary Condition Position
12
Interactive Web-based GUI
(4 of 4)

• Script file of pre-processor of U2RANS

13
Remote Execution of Flow Model
Remote Execution
14
Monitoring Residual
Residual Curve
15
Post Processor
Velocity Vector
16
Conclusions
(1 of 2)

• The integration of a web-based GUI and a flow
  model based on the distributed three-tiered
  application is developed.
• The three-tiered architecture for the integrated
  system avoids fat client problem, and also
  completes the request of distributed computing to
  improve the computing performance.

17
Conclusions
(2 of 2)

• With the assistance of the web-based GUI , users
  can execute flow model, U2RANS, in a friendly
  computing environment and use it at any time and
  at any place through WWW.

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The End

• Thank you for your kind attention