In-Form , 1

1
In-Form , 1

• In-Form is the third stage in the process of
  helping users to extend the simulation capability
  of PHOENICS. The stages have been as follows
• In the beginning (1981), user programming
  (GROUND) needed re-compilable PHOENICS.
• In 1998, automatic programming (PLANT) needed
  re-compilable PHOENICS.
• Since 2001, In-Form, providing PLANTs power
  does not need re-compilable PHOENICS.

2
In-Form , 2

• In-Form stands for INput of data via
  FORMulae. It is designed for mid-field
  PHOENICS users who are
• literate,
• numerate, and
• unwilling to be confined to clicking on the
  options which the package provides
• i.e. those who do not want to be like this

3
The mouses revenge

• The prisoner of the mouse!

4
In-Form , 3

• In-Form was introduced to PHOENICS several years
  ago and it is well-loved by cognoscenti.
• But its relations with the VR editor are somewhat
  uneasy
• and users who edit Q1 files by hand must protect
  their In-Form statements by begin and end
  barriers.
• Otherwise they will be at best ignored and at
  worst deleted.

5
In-Form, 4

• In-Form is being used for innumerable purposes,
  including
• 1. creating initial-value distributions
• 2. introducing boundary conditions and
  sources
• 3. defining material properties
• 4. computing exact-solution values for
  checking PHOENICS computations
• 5. creating transfer objects (new) and
• 6. adjusting diffusion, convection and source
  terms locally (new).

6
In-Form, 5

• There is time here to present only one example.
• For this I have chosen the Virtual Wave Tank
  which can be used for simulating surface- and
  submarine-ship motions and
• forces on under-water structures.
• I use an htm file for this, as follows

7
How to learn about In-Form

• There are ready-to-run cases in the Commander.
• The Commanders library-search facility will lead
  you to more.
• The encyclopaedia article is extensive.
• There are two tutorials.
• But now for a new development

8
PRELUDE can help

• PRELUDE now uses In-Form nomenclature for
  defining sources, initial values, etc.
• Moreover its menu system offers examples for
  users to select or modify.
• The reason is that PRELUDE is both numerate and
  literate!
• You will learn more about this later.