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aliran turbulan dalam pipa
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Aliran Turbulen dalam Pipa
Profil kecepatan dan tegangan geser
Turbulent Shear Stress
Laminar Shear Stress
Turbulent Shear Stress
lm= ukuran rata-rata eddies = panjang rata-rata campuran
Turbulent Velocity Profile
Viscous sublayer : sangat tipis (<1% dari diameter), tetapi sangat penting karena terjadi perubahan kecepatanbyang sangat besar.
Diagram Moody
Faktor gesekan pada aliran turbulen tergantung angka Reynolds dan kekasaran relatif ε/D.
Diagram Moody
Colebrook equation
S.E. Haaland
Prandtl equation
Harga Kekasaran Permukaan
Types of Fluid Flow ProblemsDesain dan analisis sistem perpipaan:1. Determining pressure
drop (or head loss) when the pipe length and diameter are given for a specified flow rate (or velocity).
2. Determining the flow rate when the pipe length and diameter are given for a specified pressure drop (or hed loss)
3. Determining the pipe diameter when the pipe length and flow rate are given for a specified pressure drop (or head loss)
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