Kalit so‘zlar
suv oqimi
energiya yo‘qotish
gidravlik napor
SolidWorks Flow Simulation
CFD
gidroenergetika
oqim tezligi
Iqtibos keltirish tartibi
Annotatsiya
Ushbu maqolada turli geometrik shakldagi — to‘g‘ri to‘rtburchakli, trapetsiyasimon, uchburchakli, yarim doirasimon va parabolik — namlangan kesimlar orqali o‘tuvchi suv oqimida yuzaga keladigan energiya (napor) yo‘qotishlari o‘rganildi. Tahlil SolidWorks Flow Simulation hisoblash suyuqlik dinamikasi (CFD) muhitida amalga oshirildi, bunda har bir kesim turi uchun oqim tezligi taqsimoti, bosim maydoni va gidravlik yo‘qotishlar bir xil gidravlik sharoitlarda aniqlangan. CFD bo‘yicha hisoblangan napor yo‘qotishlari bir o‘lchamli Darcy–Weisbach analitik baholariga nisbatan sezilarli darajada katta bo‘lib chiqdi, bu esa CFD modelining soddalashtirilgan analitik modelda to‘liq aks etmaydigan qo‘shimcha uch o‘lchamli effektlar, kirish-chiqish buzilishlari va burchaklar ta’siridagi ikkilamchi oqimlarni ham hisobga olishini ko‘rsatadi. CFD natijalariga ko‘ra, yarim doirasimon kesim eng kichik energiya yo‘qotishini berdi, bu to‘g‘ri to‘rtburchakli kesimga nisbatan taxminan 26% kam; analitik Darcy–Weisbach hisobida esa bu kamayish taxminan 12–13% ni tashkil etdi. Kichik gidroinshootlarda energiya yo‘qotishlarini kamaytirish uchun optimal kesim shakli bo‘yicha tavsiyalar berildi.
Adabiyotlar ro‘yxati
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