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ASTM D 6033 Document Information:
Title
Standard Guide for Describing the Functionality of a Ground-Water Modeling Code
ASTM International
Publication Date:
Oct 10, 1996
Scope:
This guide presents a systematic approach to the classification and
description of computer codes
used in ground-water modeling. Due to the complex nature of fluid flow
and biotic and chemical
transport in the subsurface, many different types of ground-water
modeling codes exist, each having
specific capabilities and limitations. Determining the most
appropriate code for a particular
application requires a thorough analysis of the problem at hand and
the required and available
resources, as well as a detailed description of the functionality of
potentially applicable codes.
Typically, ground-water modeling codes are nonparameterized
mathematical descriptions of the causal
relationships among selected components of the aqueous subsurface and
the chemical and biological
processes taking place in these systems. Many of these codes focus on
the presence and movement of
water, dissolved chemical species and biota, either under fully or
partially saturated conditions,
or a combination of these conditions. Other codes handle the joint
movement of water and other
fluids, either as a gas or a nonaqueous phase liquid, or both, and the
complex phase transfers that
might take place between them. Some codes handle interactions between
the aqueous subsurface (for
example, a ground-water system) and other components of the hydrologic
system or with nonaqueous
components of the environment.
The classification protocol is based on an analysis of the major
function groups present in
ground-water modeling codes. Additional code functions and features
may be identified in
determining the functionality of a code. A complete description of a
code's functionality contains
the details necessary to understand the capabilities and potential use
of a ground-water modeling
code. Tables are provided with explanations and examples of functions
and function groups for
selected types of codes. Consistent use of the descriptions provided
in the classification protocol
and elaborate functionality analysis form the basis for efficient code
selection.
Although ground-water modeling codes exist for simulation of many
different ground-water systems,
one may encounter situations in which no existing code is applicable.
In those cases, the
systematic description of modeling needs may be based on the
methodology presented in this guide.
This guide is one of a series of guides on ground-water modeling codes
and their applications, such
as Guides D 5447, D 5490, D 5609, D 5610, D 5611, and D 5718.
Complete adherence to this guide may not be feasible. For example,
research developments may result
in new types of codes not yet described in this guide. In any case,
code documentation should
contain a section containing a complete description of a code's
functions, features, and
capabilities.
This guide offers an organized collection of information or a series
of options and does not
recommend a specific course of action. This document cannot replace
education or experience and
should be used in conjunction with professional judgment. Not all
aspects of this guide may be
applicable in all circumstances. This ASTM standard is not intended to
represent or replace the
standard of care by which the adequacy of a given professional service
must be judged, nor should
this document be applied without consideration of a project's many
unique aspects. The word
"Standard" in the title of this document means only that the document
has been approved through the
ASTM consensus process.
Keywords:
- code selection
- ground-water
- ground-water modeling
- model types
- software functionality
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