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Научная статья O'zbekcha Open Access

Shamol turbinasini "ANSYS FLUENT" tizimida modellashtirish

SAFAROV A.B., SAYFIDDINOV К.E., QAHHOROV М.М.

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Журнал
Fan va texnologiyalar taraqqiyoti
Выпуск
2-son
Страницы
204–216
Опубликовано
01.04.2025
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4 9

Аннотации

В статье представлены результаты исследований по моделированию аэродинамического профиля DU-06-W-200, применяемых в ветроэнергетических установках с вертикальной осью, в системе Ansys Fluent, оценки совместимости с экспериментальными данными и определению оптимального значение угла атаки. По результатам исследования оценки зависимости соотношения коэффициентов сопротивления и подъемной силы от изменения угла атаки, осуществленной с помощью моделей турбулентности SST k-omega (k-ω) и k-epsilon (k-ε) установлено, что максимальное значение отношения коэффициентов сопротивления и подъема силы составляет 21 при оптимальном угле наклона атаки равному 5o.
Ключевые слова: аэродинамический профиль DU-06-W-200Ansys FluentCFD-моделированиетурбулентная модель SST k-omega (k-ω) и k-epsilon (k-ε)критерий соответствия χ2среднеквадратичная погрешность (RMSE). WIND TURBINE SIMULATION IN ANSYS FLUENT Safarov A.B.Sayfiddinov Q.E.Qahhorov M.M

Содержание статьи

kirish ma’lumotlari Parametrlar Qiymatlar Tahlil turi Barqaror holat Aerodinamik sirt turi DU-06-W-200 Oqim tezligi 15 m/s Ishchi harorat 23 oC Ishchi bosim 1·105 Pa Havo oqimining zichligi 1.23 kg/m3 Aerodinamik sirt vatar uzunligi L=1 m Havo oqimining dinamik yopishqoqligi µ=1.7894·10-5 kg/m·s Turbulent model turlari SST k-ω, k-epsilon (k-ε) Reynold soni Re=1.05·106 Turbulent oqim Re>5·105 DU-06-W-200 aerodinamik sirtning oqim tezligi 15 m/s, Reynold soni 1.05·106 va -15o, - 10o, -5o, 0o, 5o, 10o, 15o hujum burchaklarida ko‘tarish va tortishish koeffisientlarining qiymatlarini aniqlanadi. Bunda SST k-ω va k-epsilon (k-ε) turbulentlik modellaridan foydalanilgan. Hisoblashlar 500 iteratsiya sonida amalga oshirilgan. Bajarilgan tadqiqotlar asosida 2-rasmda DU-06-W-200 aerodinamik sirtning ko‘tarish va tortishish koeffisientlarning natijalari keltirilgan. Bunda hujum burchaklari -15o, -10o, -5o, 0o qiymatlarda amalga oshirilgan, mos ravishda ko‘tarish koeffisientlari (Cd) SST k-ω turbulentlik modeli uchun 0.1734, 0.0721, 0.0311, 0.0204 k-epsilon (k-ε) turbulentlik modeli uchun 0.2065, 0.0789, 0.0318, 0.0212, tortishish koeffisientlari (Cl) SST k-ω turbulentlik modeli uchun -0.9169, - “Развитие науки и технологий” Научно–технический журнал №2/2025 206 Информатика ва ахборот –коммуникацион тизимлар 0.9239, -0.5394, 0.0842, k-epsilon (k-ε) turbulentlik modeli uchun -0.9278, -0.8674, -0.5336, 0.0848 ga tengligi aniqlangan. a) b) c) d) e) f) j) h) a va b, α=-15o; c va d, α=-10o; e va f, α=-5o; j va h, α=0o 2-rasm. DU-06-W-200 aerodinamik sirtning ko‘tarish va tortishish koeffisientlarning egri chiziqlari 3-rasmda DU-06-W-200 aerodinamik sirtning o‘zgaruvchan oqim tezligi va bosimiga bog‘liqlik simulyatsiya natijalari keltirilgan. “Фан ва технологиялар тараққиёти” Илмий–техникавий журнал №2/2025 207 Информатика и информационно-коммуникационные системы a) b) c) d) e) f) j) h) a va b, α=-15o; c va d, α=-10o; e va f, α=-5o; j va h, α=0o 3-rasm. DU-06-W-200 aerodinamik sirtning o‘zgaruvchan oqim tezligi va bosimiga bog‘liqlik natijalari “Развитие науки и технологий” Научно–технический журнал №2/2025 208 Информатика ва ахборот –коммуникацион тизимлар 4-rasmda DU-06-W-200 aerodinamik sirtning ko‘tarish va tortishish koeffisientlarini aniqlash hujum burchaklari 5o, 10o, 15o qiymatlarda amalga oshirilgan, mos ravishda tortishish koeffisientlari (Cl) SST k-ω turbulentlik modeli uchun 0.7416, 1.3134, 1.1229 k-epsilon (k-ε) turbulentlik modeli uchun 0.7394, 1.1215, 1.122 ko‘tarish koeffisientlari (Cd) SST k-ω turbulentlik modeli uchun 0.0351, 0.0782, 0.1712 k-epsilon (k-ε) turbulentlik modeli uchun 0.0359, 0.0787, 0.2019 ga tengligi aniqlangan. a) b) c) d) e) f) a va b, α=5o; c va d, α=10o; e va f, α=15o 4-rasm. DU-06-W-200 aerodinamik sirtning ko‘tarish va tortishish koeffisientlarning natijalari 5-rasmda DU-06-W-200 aerodinamik sirtning o‘zgaruvchan oqim tezligi va bosimiga bog‘liqlik simulyatsiya natijalari keltirilgan. Bunda hujum burchaklari 5o, 10o, 15o qiymatlarda amalga oshirilgan. “Фан ва технологиялар тараққиёти” Илмий–техникавий журнал №2/2025 209 Информатика и информационно-коммуникационные системы a) b) c) d) e) f) 5-rasm. DU-06-W-200 aerodinamik sirtning o‘zgaruvchan oqim tezligi va bosimiga bog‘liqlik natijalari 6-rasmda ko‘tarish va tortishish koeffisientlarini hujum burchagi o‘zgarishiga bog‘liqlik model va eksperiment ma’lumotlarini [22] solishtirish natijalari keltirilgan. DU-06-W-200 aerodinamik profilning oqim tezligi 15 m/s da, hujum burchaklari -15o…+15o qiymatlarida ko‘tarish va tortishish koeffisientlarini Ansys Fluent tizimining SST k-ω va k-epsilon (k-ε) turbulentlik modellarida aniqlangan natijalari va tajriba malumotlari keltirilgan. “Развитие науки и технологий” Научно–технический журнал №2/2025 210 Информатика ва ахборот –коммуникацион тизимлар 0,27 SST k-ω turbulence model k-epsilon (k-ε) turbulence model Experimental data 0,24 0,21 0,18 0,15 Cd 0,12 0,09 0,06 0,03 -20 -15 -10 -5 0 5 10 15 20 α, grad. a) 1,5 SST k-ω turbulence model 1,25 k-epsilon (k-ε) turbulence model Experimental data 0,75 0,5 0,25 CL -20 -15 -10 -5 0 5 10 15 20 -0,25 -0,5 -0,75 -1 -1,25 α, grad. b) 6-rasm. Ko‘tarish va tortishish koeffisientlarini hujum burchagiga bog‘liqlik model va eksperiment natijalari. a-ko‘tarish koeffisienti (Cd); b-tortishish koeffisienti (Cl) 8-rasmda ko‘tarish va tortishish koeffisientlari nisbatining hujum burchagi o‘zgarishiga bog‘lik natijalari keltirilgan. Bunda SST k-ω va k-epsilon (k-ε) turbulentlik modellaridan foydalanildi. Tadqiqot natijalariga ko‘ra hujum burchagi optimal 5 gradusda ko‘tarish va tortishish koeffisientlari nisbatining maksimal qiymati 21 ga teng bo‘lishi aniqlandi. “Фан ва технологиялар тараққиёти” Илмий–техникавий журнал №2/2025 211 Информатика и информационно-коммуникационные системы 0 2 4 6 8 10 12 14 16 18 20 22 24 SST k-ω model k-epsilon (k-ε) model Cl/Cd 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 α, grad. 7-rasm. Ko‘tarish va tortishish koeffisientlari nisbatining hujum burchagi o‘zgarishiga bog‘lik egri chiziqlari 3-jadvalda DU-06-W-200 aerodinamik profilning ko‘tarish va tortishish koeffisientlarining model va eksperiment ma’lumotlarni muvofiqligini baholash natijalari keltirilgan. Bunda χ2 moslik kriteriyasi, o‘rtacha kvadratik xatolik (RMSE), determinatsiya koeffitsiyenti (R2), o‘rtacha siljish xatoligi (MBE) uslubiyotlaridan foydalanildi. Tadqiqot natijalariga ko‘ra ko‘tarish koeffisientini (Cl) k-epsilon (k-ε) va tortishish koeffisientini (Cd) SST k-ω model model orqali modellashtirish eng samarali ekanligi aniqlandi. 3-jadval. Eksperiment va model natijalarini muvofiqligini baholash natijalari Model turi Koeffisientlar χ2 RMSE R2 MBE SST k-ω model Cd 0.0303 0.0320 0.9328 0.00093 Cl 0.1714 0.1614 0.9955 0.026079 k-epsilon (k-ε) model Cd 0.0167 0.0213 0.9327 0.000454 Cl 0.0821 0.1203 0.9942 0.014482 Xulosa: olib borilgan tadqiqotlar natijasida DU-06-W-200 aerodinamik profil Ansys Fluent tizimida turli o‘zgaruvchan hujum burchaklarida ko‘tarish va tortishish koeffisientlarini aniqlash va tajriba ma’lumotlari bilan muvofiqlagini baholashda quyidagi xulosalar qilindi: 1. Vertikal o‘qli shamol energetik qurilmalarini o‘zgaruvchan shamol oqimlarida samaradorligini va ishonchliligini oshirishda turbina parraklarining shakli, materiali va aerodinamikasiga bog‘liqligi o‘rganildi. Shamol parraklarini maqbul o‘lchamlarini loyihalashda Ansys Fluent tizimining CFD modelidan foydalanish yaxshi samara berishi tahlillar asosida aniqlandi. 2. DU-06-W-200 aerodinamik profilni hujum burchaklari -15o dan +15o gacha bo‘lgan oraliqda, chegara shartlari va kirish ma’lumotlari oqim tezligi 15 m/s, ishchi harorat 23 oC, ishchi bosim 1·105 Pa, havo oqimining zichligi 1.23 kg/m3, aerodinamik sirt vatar uzunligi 1 m, havo oqimining dinamik yopishqoqligi 1.7894·10-5 kg/m·s, turbulent model turlari SST k-ω, k-epsilon (k-ε) va Reynold soni 1.05·106 bo‘lgan holatda modellashtirildi. 3. DU-06-W-200 aerodinamik profilning hujum burchaklari -15o, -10o, -5o, 0o, 5o, 10o, 15o qiymatlarda ko‘tarish koeffisientlari (Cd) SST k-ω turbulentlik modeli uchun 0.1734, 0.0721, 0.0311, 0.0204, 0.0351, 0.0782, 0.1712 k-epsilon (k-ε) turbulentlik modeli uchun 0.2065, 0.0789, 0.0318, 0.0212, 0.0359, 0.0787, 0.2019 tortishish koeffisientlari (Cl) SST k-ω turbulentlik modeli uchun -0.9169, -0.9239, -0.5394, 0.0842, .7416, 1.3134, 1.1229 k-epsilon (kε) turbulentlik modeli uchun -0.9278, -0.8674, -0.5336, 0.0848, 0.0359, 0.0787, 0.2019 ga tengligi aniqlandi. “Развитие науки и технологий” Научно–технический журнал №2/2025 212 Информатика ва ахборот –коммуникацион тизимлар 4. DU-06-W-200 aerodinamik profilning model va tajriba natijalarini muvofiqligini baholashda χ2 moslik kriteriyasi, o‘rtacha kvadratik xatolik (RMSE), determinatsiya koeffitsiyenti (R2), o‘rtacha siljish xatoligi (MBE) uslubiyotlaridan foydalanildi. Tadqiqot natijalariga ko‘ra ko‘tarish koeffisientini (Cl) k-epsilon (k-ε) va tortishish koeffisientini (Cd) SST k-ω model orqali modellashtirish eng samarali ekanligi aniqlandi. 5. Ko‘tarish va tortishish koeffisientlari nisbatining hujum burchagi o‘zgarishiga bog‘liqligini SST k-ω va k-epsilon (k-ε) turbulentlik modellaridan foydalanib baholandi. Tadqiqot natijalariga ko‘ra hujum burchagi optimal 5 gradusda ko‘tarish va tortishish koeffisientlari nisbatining maksimal qiymati 21 ga teng bo‘lishi aniqlandi

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