...A k-ω Turbulence Model for Quasi-Three-Dimensional Turbomachinery Flows Rodrick V. Chima* NASA Lewis Research Center Cleveland, Ohio 44135 Abstract A two-equation k-ω turbulence model has been developed and applied to a quasi-three-dimensional viscous analysis code for blade-to-blade flows in turbomachinery. The code includes the effects of rotation, radius change, and variable stream sheet thickness. The flow equations are given and the explicit Runge-Kutta solution scheme is described. The k-ω model equations are also given and the upwind implicit approximate-factorization solution scheme is described. Three cases were calculated: transitional flow over a flat plate, a transonic compressor rotor, and a transonic turbine vane with heat transfer. Results were compared to theory, experimental data, and to results using the Baldwin-Lomax turbulence model. The two models compared reasonably well with the data and surprisingly well with each other. Although the k-ω model behaves well numerically and simulates effects of transition, freestream turbulence, and wall roughness, it was not decisively better than the Baldwin-Lomax model for the cases considered here. The Baldwin-Lomax model is popular because it is easy to implement (at least in 2-D) and works fairly well for predicting overall turbomachinery performance. However, the model has both numerical and physical problems. Numerical problems include awkward implementation in 3-D, difficulty in finding the length scale [2]...
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...62118 0/nm 1/n1 2/nm 3/nm 4/nm 5/nm 6/nm 7/nm 8/nm 9/nm 1990s 0th/pt 1st/p 1th/tc 2nd/p 2th/tc 3rd/p 3th/tc 4th/pt 5th/pt 6th/pt 7th/pt 8th/pt 9th/pt 0s/pt a A AA AAA Aachen/M aardvark/SM Aaren/M Aarhus/M Aarika/M Aaron/M AB aback abacus/SM abaft Abagael/M Abagail/M abalone/SM abandoner/M abandon/LGDRS abandonment/SM abase/LGDSR abasement/S abaser/M abashed/UY abashment/MS abash/SDLG abate/DSRLG abated/U abatement/MS abater/M abattoir/SM Abba/M Abbe/M abbé/S abbess/SM Abbey/M abbey/MS Abbie/M Abbi/M Abbot/M abbot/MS Abbott/M abbr abbrev abbreviated/UA abbreviates/A abbreviate/XDSNG abbreviating/A abbreviation/M Abbye/M Abby/M ABC/M Abdel/M abdicate/NGDSX abdication/M abdomen/SM abdominal/YS abduct/DGS abduction/SM abductor/SM Abdul/M ab/DY abeam Abelard/M Abel/M Abelson/M Abe/M Aberdeen/M Abernathy/M aberrant/YS aberrational aberration/SM abet/S abetted abetting abettor/SM Abeu/M abeyance/MS abeyant Abey/M abhorred abhorrence/MS abhorrent/Y abhorrer/M abhorring abhor/S abidance/MS abide/JGSR abider/M abiding/Y Abidjan/M Abie/M Abigael/M Abigail/M Abigale/M Abilene/M ability/IMES abjection/MS abjectness/SM abject/SGPDY abjuration/SM abjuratory abjurer/M abjure/ZGSRD ablate/VGNSDX ablation/M ablative/SY ablaze abler/E ables/E ablest able/U abloom ablution/MS Ab/M ABM/S abnegate/NGSDX abnegation/M Abner/M abnormality/SM abnormal/SY aboard ...
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...GENEROLO JONO ŽEMAIČIO LIETUVOS KARO AKADEMIJA Genovaitė LAUGALIENĖ Milda MIRONAITĖ MOKOMASIS ANGLŲ – LIETUVIŲ IR LIETUVIŲ – ANGLŲ KALBŲ KARYBOS ŽODYNAS Eksperimentinis leidinys Vilnius 2008 UDK 355(03)=20=882 La-458 Mokomąjį anglų – lietuvių ir lietuvių – anglų kalbų karybos žodyną parengė Generolo Jono Žemaičio Lietuvos karo akademijos Užsienio kalbų instituto direktorė Genovaitė Laugalienė ir Užsienio kalbų instituto Užsienio kalbų katedros lektorė Milda Mironaitė. Atsakingoji redaktorė Užsienio kalbų instituto Užsienio kalbų katedros lektorė Aušra Bučaitė. Recenzavo Generolo Jono Žemaičio Lietuvos karo akademijos viršininko pavaduotojas doc. dr. Pranas Jankauskas, Užsienio kalbų instituto Anglų kalbos mokymo centro viršininkas vyr. ltn. Andrius Kiesas ir Lietuvos kariuomenės Mokymo ir doktrinų valdybos Individualiojo rengimo skyriaus Anglų kalbos mokymo poskyrio vedėja Aušra Narbutienė. © Genovaitė Laugalienė, 2008 © Milda Mironaitė, 2008 © Generolo Jono Žemaičio Lietuvos karo akademija, 2008 Turinys Pratarmė......................................................................................................................... 4 . Angliški ir lietuviški sutrumpinimai ............................................................................ 5 Anglų – lietuvių kalbų karybos žodynas........................................................................ 7 Lietuvių – anglų kalbų karybos žodynas ....................................
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