Additional improvements to the NASA Lewis ice accretion code LEWICE

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National Aeronautics and Space Administration, National Technical Information Service, distributor , [Washington, DC], [Springfield, Va
Aircraft icing., Aircraft safety., Computer programs., Flight safety., Prediction anal
StatementWilliam B. Wright and Colin S. Bidwell.
SeriesNASA technical memorandum -- 106849.
ContributionsBidwell, Colin S., United States. National Aeronautics and Space Administration.
The Physical Object
FormatMicroform
Pagination1 v.
ID Numbers
Open LibraryOL15409613M

Additional improvements to the NASA Lewis ice accretion code LEWICE Article (PDF Available)   March   with  95 Reads  How we measure 'reads' A 'read' is counted each time someone views a. Get this from a library. Additional improvements to the NASA Lewis ice accretion code LEWICE. [William B Wright; Colin S Bidwell; United States.

National Aeronautics and Space Administration.]. Additional improvements to the NASA Lewis ice accretion code LEWICE. LEWICE/E - An Euler based ice accretion code. MARK POTAPCZUK; 30th Aerospace Sciences Meeting and Exhibit August Further Examinations of Bimodal SLD Ice Accretion in the NASA Icing Research Tunnel.

Three major features have been added to the NASA Lewis ice accretion code LEWlCE. 1 The numerics have been improved, the roughness predic- tion model has been revised, and a multi-element capability has been added.

The numerics of the code have been improved in several ways to produce more accurate ice shapes. These features include: first, further improvements to the numerics of the code so that more time steps can be run and so that the code is more stable; second, inclusion and refinement of the roughness prediction model described in an earlier paper; third, inclusion of multi-element trajectory and ice accretion capabilities to by: Users Manual for the NASA Lewis Ice Accretion Prediction Code (LEWICE) Gary A.

Ruff and Brian M. Berkowitz Sverdrup Technology, Inc. Lewis Research Center Group Brook Park, Ohio May Prepared for Lewis Research Center Under Contract NAS National Aeronautics and Space Administration (NA?;A-C"-'.

_:_5.L2 _) F inlet. Users manual for the NASA Lewis three-dimensional ice accretion code (LEWICE 3D) (SuDoc NAS ) [Bidwell, Colin S.] on *FREE* shipping on qualifying offers. Users manual for the NASA Lewis three-dimensional ice accretion code (LEWICE 3D) (SuDoc NAS )Author: Colin S.

Bidwell. The purpose of the current study was to improve the ice accretion capabilities of the LEWICE code, especially in the glaze ice regime. and to add features to the code which give it greater flexibility and usefullness. These improve­ ments were developed at Sverdrup Technology, Inc. and at the NASA Lewis Research Center under NASA funding.

4 of LEWICE is an ice accretion prediction code that applies a time-stepping procedure to calculate the shape of an ice accretion. The potential flow field is calculated in LEWICE using the Douglas Hess-Smith 2-D panel code (S24Y). This potential flow field is then used to calculate the trajectories of particles and the impingement points on the body.

The baseline module of LEWICE is an ice accretion prediction code that applies a time step-ping procedure to calculate the shape of an ice accretion. The potential flow field can be calcu-lated in LEWICE using the Douglas Hess-Smith 2-D panel code ($24Y) 3.

In the current version. These features include: first, further improvements to the numerics of the code so that more time steps can be run and so that the code is more stable; second, inclusion and refinement of the roughness prediction model descried in an earlier paper; third, inclusion of multielement trajectory and ice accretion capabilities to LEWICE.

throughout industry and government. Hundreds of engineers use the LEWICE ice-accretion modeling code, and the FAA now accepts it as part of their icing certification process.

NASA continues to improve these codes and verify them against experimental data. Because of our close ties with the European icing community, they too are familiar. LEWICE is an ice accretion prediction code that applies a time-stepping procedure to calculate the shape of an ice accretion.

The potential flow field is calculated in LEWICE using the Douglas Hess-Smith 2-D panel code (S24Y).

Details Additional improvements to the NASA Lewis ice accretion code LEWICE EPUB

This potential flow field is then used to calculate the trajectories of particles and the impingement points on the body.

Wright, W.B., and Bidwell C.S, “Additional Improvements to the NASA Lewis Ice. on a 2D ice accretion code (Lewice 2D - LEWINT) to predict the ice growth along a two-dimensional section of a.

Get this from a library. Update to the NASA Lewis Ice accretion LEWICE. [William B Wright; United States. National Aeronautics and Space Administration.].

Abstract. Due to the feed back of the user community, three major features have been added to the NASA Lewis ice accretion code LEWICE.

Download Additional improvements to the NASA Lewis ice accretion code LEWICE EPUB

These features include: first, further improvements to the numerics of the code so that more time steps can be run and so that the code is more stable; second, inclusion and refinement of the roughness prediction model descried in an earlier paper; third.

code to integrate additional modules such as the. thermal deicer module or a Naviér-Stokes code. LEWICE is composed of the f ollowing. Improv ed NASA Lewis Ice Accretion Code LEWICE. Improvements to the NASA Lewis Ice Accretion. NASA Lewis Ice Accretion Code LEWICEAdditional work is needed to better understand the fundamental physics of the ice accretion process.

A research project is underway at NASA Glenn to produce computer software that can accurately predict ice growth under any meteorological conditions for any aircraft surface. This report will present results from version of this software, which is called LEWICE.

This version differs from previous releases in that it incorporates additional thermal analysis capabilities, a pneumatic boot. The rime ice accretion can be simulated under the assumption that the droplets freeze immediately as they impinge on the wing surface since the environment temperature is low enough (typically below –15°C).

A method to build the ice shape is proposed based on the assumption that ice grows in the direction normal to the wing surface. This report is intended as an update to NASA CR 'User's Manual for the NASA Lewis Ice Accretion Prediction Code (LEWICE).' It describes modifications and improvements made to this code as well as changes to the input and output files, interactive input, and graphics output.

English This report is intended as an update/replacement to NASA CR 'User's Manual for the NASALewis Ice Accretion Prediction Code (LEWICE)' and as an update to NASA CR 'Update to the NASA Lewis Ice Accretion Code LEWICE'. gests that some additional criteria must be ' and as an update to NASA CR 'Update to the NASA Lewis Ice Accretion Code LEWICE'.

A hyperbolic grid generator with improvements for. User's Manual for LEWICE Version ,” NASA Technical Report No. CR Bourgault, Y., User's Manual for the NASA Lewis Ice Accretion Prediction Code (LEWICE),” NASA Technical Report No.

CR Improvements of the Adiabatic Film Cooling by Using Two-Row Holes of Different Geometries and Arrangements. Moreover, an indepth comparison between the experimental data and the analysis of NASA's ice accretion code LEWICE is given.

Finally, conclusions are drawn as to the quality of the ice accretion data and the predictability of the data base as a whole. Recommendations are also given for improving data taking technique as well as potential future.

LEWICE (NASA) Lewis Ice Accretion Code. LTPT (NASA Langley) Low Turbulence Pressure Tunnel that additional improvements to the icing simulation methods (other than for SLD conditions) may not be needed, at least from a safety perspective.

Description Additional improvements to the NASA Lewis ice accretion code LEWICE FB2

At this point, there does not appear to be a compelling justification for pursuing improvements to. By considering both natural ice shedding and different types of ice accretion due to local temperature variations on the blade surface, an improved rotor icing model was developed.

G.A. and Berkowitz, B.M. Users manual for the NASA Lewis ice accretion code (LEWICE), T. and Guffond, D. Improvement of the ONERA 3D icing code, comparison. For typical supercooled fog conditions found in cold northern regions, four rime ice accretions on the S wind turbine airfoil were predicted using the NASA LEWICE code.

The resulting airfoil/ice profile combinations were wind tunnel tested to obtain the lift, drag, and pitching moment characteristics over the Reynolds number range 1−2. CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): The Icing Technology Branch at NASA Lewis has been involved in an effort to validate two thermal ice protection codes developed at the NASA Lewis Research Center: LEWICE/Thermal 1 (electrothermal de-icing and anti-icing), and ANTICE 2 (hot gas and electrothermal anti-icing).

The steady improvement of simulation methods and the increasing demand for highly optimised aircraft performance, make it worthwhile to try to get beyond the current level of modelling accuracy.

Additional Improvements to the NASA Lewis Ice Accretion Code LEWICE", (). Additional Results of Ice-Accretion Scaling at SLD. Two-dimensional and quasi-3D in-flight ice accretion simulation codes have been widely used by the aerospace industry for the last two decades as an aid to the certification process.

The present paper proposes an efficient numerical method for calculating ice shapes on simple or complex 3D geometries.Wright, W.B. User manual for the improved NASA Lewis ice accretion code LEWICENASA Contractor ReportJune Al- Khalil, K.M.

Numerical simulation of an aircraft anti-icing system incorporating a rivulet model for the runback water, Ph.D. Thesis, University of Toledo, Ohio, USA, June   AIAA Reehorst AL, Bidwell C. NASA Lewis Research Center, internal document.

Washington, DC: NASA Lewis Res. Cent. Ruff GA, Berkowitz BM. User manual for the NASA Lewis ice accretion code (LEWICE). NASA CR Shin J, Berkowitz B, Chen HH, Cebeci T. Prediction of ice shapes and their effect on airfoil performance.

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