skip to main content

Title: DIATOM (Data Initialization and Modification) Library Version 7.0

DIATOM is a library that provides numerical simulation software with a computational geometry front end that can be used to build up complex problem geometries from collections of simpler shapes. The library provides a parser which allows for application-independent geometry descriptions to be embedded in simulation software input decks. Descriptions take the form of collections of primitive shapes and/or CAD input files and material properties that can be used to describe complex spatial and temporal distributions of numerical quantities (often called “database variables” or “fields”) to help define starting conditions for numerical simulations. The capability is designed to be general purpose, robust and computationally efficient. By using a combination of computational geometry and recursive divide-and-conquer approximation techniques, a wide range of primitive shapes are supported to arbitrary degrees of fidelity, controllable through user input and limited only by machine resources. Through the use of call-back functions, numerical simulation software can request the value of a field at any time or location in the problem domain. Typically, this is used only for defining initial conditions, but the capability is not limited to just that use. The most recent version of DIATOM provides the ability to import the solution field from onemore » numerical solution as input for another.« less
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Sandia National Laboratories
Publication Date:
OSTI Identifier:
Report Number(s):
SCR #1739
DOE Contract Number:
Resource Type:
Software Revision:
Software Package Number:
Software CPU:
Source Code Available:
Related Software:
DIATOM is a library currently embedded within other Sandia codes: CTH, Alegra, Cubit, Zapotec and Sierra.
Research Org:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org:
Contributing Orgs:
not specified
Country of Publication:
United States

To initiate an order for this software, request consultation services, or receive further information, fill out the request form below. You may also reach us by email at: .

ESTSC staff will begin to process an order for scientific and technical software once the payment and signed site license agreement are received. If the forms are not in order, ESTSC will contact you. No further action will be taken until all required information and/or payment is received. Orders are processed within three to five business days.

Software Request