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Updated 5/14/2024
LewInt integrates the ice accretion code LEWICE
(version 3.2.2) with
American Kestrel's user interface, icing analysis tools,
and automated
plotting. LEWICE 3.2.2 is a validated ice accretion code
developed by
NASA Glenn Research Center.
A
new license agreement, with NASA Glenn, allowing
distribution of LEWICE
version 3.2.2 was executed on 6/11/14.
American Kestrel is accepting new international orders
for the
integrated ice accretion suite LewInt, including
LEWICE version 3.2.2.
LEWICE version 3.2.2 is made available under a
copyright license from
the U.S. Government, National Aeronautics and Space
Administration or
NASA.
LewInt is a try-before-you-buy package. The download
listed below is a
fully functioning version of LewInt with LEWICE. The
software comes
with a 15 day trial period but includes some reminders
that pop up
everytime LewInt and LEWICE is run. Once down loaded
and installed the
trial version can be converted to a purchased version
by inputing a
software key.
Version 1.04
released:
This
version includes various fixes and greater
implementation of LEWICE
thermal analysis capabilities as well as greater use of
external CFD
data.
Previously
installed licenses will continue to work with the new version. The next
update will only be available if your maintenance is current. LewInt
annual maintenance fee, includes technical support and software
updates. Maintenance must be in place continuously. At American Kestrel
Company’s discretion maintenance may be reinstated retroactively if
expiration is less than 6 months old.
If you have previously
installed an earlier version of LewInt and the trial
period expired you will get another two
weeks when installing this version.
Downloads:
Current
release of LewInt -
Full version 1.04 released 5/8/2013
LewInt:
Ice Accretion Analysis presentation given at AC9C
5/5/2009
LewInt:
Thermal Analysis presentation given at AC9C 11/1/2011
NASA
LEWICE example files
- The LEWICE installation discs from NASA
include example LEWICE input and output files as well as
some papers
and training material. These are all specific to LEWICE
and not LewInt
but are very useful.
LEWICE
3.2.2 manual -
Searchable version of manual with cover sheet.
Various Thermal
Analysis Using Lewice:
An
Evaluation of Jet Impingement..., AIAA-2004-0062
A
Comparison of Num. Methods ... Two-Dim. Heat Transfer
.... NASA CR 4202
Users
Manual for the NASA Lewis Ice Accretion/Heat Transfer
Prediction Code with Electrothermal Deicer input -
NASA CR4530
Validation
Papers Using Lewice:
Validation
of NASA Thermal Ice Protection Computer Codes (Part 1)
NASA TM107397
Validation
of NASA Thermal Ice Protection Computer Codes (Part 3)
NASA TM2001-210907
A
Summary of Validation Results for LEWICE 2.0 ,
NASA/CR—1998-208687
Validation
Results for LEWICE 2.0, NASA/CR—1999-208690
Validation
Results for LEWICE 3.0, NASA/CR—2005-213561
Purchase:
Currently LewInt/LEWICE is available to both US and foreign companies.
It runs on the Microsoft Windows® operating system. Due to changes in
the operating system from Windows XP through the current versions, it
is recommended that the software be "tried" on the intended computer to
verify acceptable operation prior to purchase.
Licensee acknowledges and agrees that the Program(s) are
subject to
U.S. laws governing the export and/or re-export of
Program(s)
including, but not limited to, the Export Administration
Regulations,
regulations promulgating financial transaction
restrictions
administered by the Office of Foreign Asset Controls of
the U.S.
Department of the Treasury, the International Emergency
Economic Powers
Act, the United States Export Administration Act, the
United States
Trading with the Enemy Act, and all regulations, orders
and licenses
issued thereunder.
The Licensee is the importer of record and must comply with all laws
and regulations of the destination country. Orders shipped outside of
the United States may be subject to import taxes, customs duties and
fees levied by the destination country. The recipient of an
international shipment may be subject to such import taxes, customs
duties and fees, which are levied once a shipment reaches the
recipient's country. Additional charges for customs clearance must be
fulfilled by the recipient; American Kestrel Co., LLC has no control
over these charges, nor can American Kestrel Co., LLC predict what they
may be.
Currently checks, wire transfers, or credit cards using
PayPal are accepted for payment. Send email to LEWINT@AmericanKestrelCo.com
for
purchasing information. LewInt costs
$3,000USD for a
single permanent license with one year of maintenance
and updates. A
block of five licenses can be purchasd for $12,000USD.
One year of
mainentance is $750USD per license. Purchases can be
completed via Credit Card using PayPal.
Pricing is valid for sales
that do not require any seller registration or
qualification, or seller certifications with the purchasing company.
Installation:
Download the self expanding file containing
the LewInt
release. Extract the files into a temporary directory.
You will need to
execute two installer files. The first LewInt_install.exe installs
both the interface and the Matlab libraries required for
the interface,
it would be best if you used the default locations for
the program.
Then execute LewIntExample.msi to install some example
files, it would
be best to use the default location here as well.
You are
now ready to run LewInt. There should be both a desktop
and start menu
shortcuts for LewInt. Start LewInt, it takes a while to
load, and
select the tutorial checkbox. Follow the instructions in
the tutorial
and when you set the analysis path set it to the
c:/examples directory.
You can turn off the tutorial at any time by closing it
or un-checking
the tutorial box on the main menu.
The licensing
code periodically tells you that it is an unlicensed
version and allows
you to click through to continue. This happens with
every run of Lewice
as well as when you start and close LewInt. Once you
have purchased a
license this will disappear. Email me with any questions
you have.
To be added to future mailings about LEWINT
please email: LEWINT@AmericanKestrelCo.com.
LEWINT features include:
- Computational engine is validated ice accretion code
LEWICE 3.2.2
- International availability
- LEWICE executable is un-altered
- LEWICE widely accepted by regulatory authorities
(User must verify acceptance)
- Graphical user interface simplifying use for
beginning and experienced user
- Tutorial mode
- Technical support provided by experienced user
- On-site training available
- User input validation and range checking
- Raw LEWICE input and data files saved
- A matrix of up to 64 runs may be prepared
- Automated plotting with titles generated from
conditions run
LEWICE version 3.2.2 is made available under a
copyright
license from the U.S. Government, National Aeronautics
and Space
Administration or NASA.
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