Ung sudt - ehuyen vi Moi
1
Hien luong Vortcx-sheđing
- Phan ung cua ket cau - Kiem ira :
- Phan ung cua ket cau - Kiem ira :
Van toe gio ihiot ko
1 1
Thiol ke cot thap
Hien tLfrmg Gallopmi:
- \'an toe eio iiii han - Kiem tra : - Kiem tra :
Van Ioc gio thiet ke
1
Thiet ke day vang
Hinh 1.8. So đ vai ird eiia cac hien tucme trone thiet ke eau dav vane
1.8. Ket luan cudi chuong
Trong chuang nay da trinh bay each xae dinh van tdc gid thiei ke va van tdc gid Idn nhai, tfnh loan cac thanh phíin lire khf dgng iTnh, eae dae tnmg xac dinh phan line eiia done khf, eae hien tuane khf đne luẹ \ai tro tac dune eiia eae hien tuone khf đne lue trone thiet ke cau dav \anẹ Cd the rut ra mot sd nhan xet chfnh tu kei qua nghien cuu nhu sau:
- Sd Revnold va sd Strouhal la hai thdne so khdne thu neuven quan trone xac dinh phan ling ciia đng khf khi qua mot liei dien eau bai kỵ Vdi eae dang liet dien cfiu day vang thoat khf đng lire se cd sd Reynold bẹ done khf khi quan eong
Irinh se h\o thanh eae xoay khf Karman cd kfeh thude gidng nhau, xuai hien \di
tan sd xae dinh ihdng qua sd Strouhal. Mgl trong eae miie tieu lam giam eae lue khf done uie đne vao kel eau eau da\ \ane la thiei ke mat eat dam eau ed sd Reynold be nhat ed the, lire la mat eat dam eau cang thoat khf cang tot.
- Trong ihiei ke eau day vang. can thiei phai danh gia lac dgng eiia hien tugng {•lulter xav ra d van tdc eid eao eav mat dn dinh kei caụ Han níra eung can phai
kiem tra \o\ hien tugng Buffeting eune eo the ea> hu hai eho eau a \an toe eio eao Mi hien iirgng Vortex-sheđing ga\ cdng huong cdng irinh ehi a dai van toe