(just questin 2 a b c )Outer tube: 1 inch Sch 40 stainless steel (1.315 inch/0.133 inch) Inner tube: inch Sch 40 stainless steel (0.840 inch/0.109 inch) uid d) If the thickness of the mm, Calculate the average velocity of the liquid film. [4 pts] e) Why do you use Re number? Explain the physical meaning of Re Calculate Re numbers for annulus and film flows. [6 pts] Q2. Considering the system given in Fig. Q1.1, a) In which position and where should you place the control volume in order to find the velocity distribution within the liquid film? Show on the film flow: [3 pts] b) Schematically plot velocity and shear stress distributions for the liquid film flow on the Fig. Q1.1. [4 pts] c) Show the interfaces and write boundary conditions, explaining the reasons basing on molecular interactions for the film flow. [8 pts]

Outer tube: 1 inch Sch 40 stainless steel mm, Calculate the average velocity of the (1.315 inch/0.133 inch) liquid film. [4 pts] Inner tube: 1/2 inch Sch 40 stainless steel e) Why do you use Re number? Explain ( 0.840 inch/0.109 inch) the physical meaning of Re Calculate Re numbers for annulus and film flows. [6 pts ] Q2. Considering the system given in Fig. Q1.1, a) In which position and where should you place the control volume in order to find the velocity distribution within the liquid film? Show on the film flow. [3 pts] b) Schematically plot velocity and shear stress distributions for the liquid film flow on the Fig. Q1,1. [4 pts] c) Show the interfaces and write boundary conditions, explaining the reasons basing on molecular interactions for the film flow. [8 pts] Outer tube: 1 inch Sch 40 stainless steel mm, Calculate the average velocity of the (1.315 inch/0.133 inch) liquid film. [4 pts] Inner tube: 1/2 inch Sch 40 stainless steel e) Why do you use Re number? Explain ( 0.840 inch/0.109 inch) the physical meaning of Re Calculate Re numbers for annulus and film flows. [6 pts ] Q2. Considering the system given in Fig. Q1.1, a) In which position and where should you place the control volume in order to find the velocity distribution within the liquid film? Show on the film flow. [3 pts] b) Schematically plot velocity and shear stress distributions for the liquid film flow on the Fig. Q1,1. [4 pts] c) Show the interfaces and write boundary conditions, explaining the reasons basing on molecular interactions for the film flow. [8 pts]