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Jason Gragg

Stars in Action: 2nd Anniversary, Part 1

Stars in Action: 2nd Anniversary, Part 1

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Turbulentnost' po pravu schitaetsya osnovnoy problemoy gidrodinamiki, tak kak rezhim techeniya v bol'shinstve prakticheski vazhnykh zadach turbulentnyy. V nastoyashchee vremya uzhe ne vyzyvaet somneniya, chto turbulentnye rezhimy opisyvayutsya uravneniyami gidrodinamiki, odnako pri prakticheskom voploshchenii ideologii pryamogo chislennogo modelirovaniya turbulentnosti voznikayut ogromnye tekhnicheskie i metodicheskie trudnosti, svyazannye, v osnovnom, s bol'shimi chislami Reynol'dsa. V klassicheskoy zadache o konvektsii Releya-Benara, gde dvizhenie vyazkoy neszhimaemoy zhidkosti mezhdu dvumya gorizontal'nymi ploskostyami voznikaet pri podogreve snizu, situatsiya sushchestvenno uproshchaetsya, tak kak otsutstvie srednego techeniya obuslavlivaet sravnitel'no nevysokie chisla Reynol'dsa. V dannoy rabote v dvumernoy i trekhmernoy postanovkakh rassmotrena zadacha o konvektsii Releya- Benara. Podrobno rassmatrivaetsya spetsial'nyy spektral'no-raznostnyy metod i rezul'taty ego testirovaniya. Predlagaemym metodom izuchayutsya razlichnye rezhimy konvektsii, ot statsionarnykh do turbulentnykh. Dannaya kniga prednaznachena dlya studentov, aspirantov, prepodavateley i nauchnykh rabotnikov, rabotayushchikh v oblasti vychislitel'noy gidrodinamiki.
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