the mass flow rate, m, flow through duct with a rectangular cross-section a*b. The fluid properties such as density, p,...
the mass flow rate, m, flow through duct with a rectangular cross-section a*b. The fluid properties such as density, p, and kinematic viscosity, v, are given determine:
(1) Hydraulic, Dh,
(2)average velocity, V
(3)Mass flux, G,
(4) Reynolds number, Re
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the mass flow rate, m, flow through duct with a rectangular cross-section a*b. The fluid properties such as density, p,...
Air enters a 10-m-long section of a rectangular duct of cross section 15 cm X 20 cm made of commercial steel at an average velocity of 7 m/s
Air enters a 10-m-long section of a rectangular duct of cross section 15 cm X 20 cm made of commercial steel at an average velocity of 7 m/s.(p = 1.145kg/m3 ,μ = 1.895x10-5kg/ms) and e=0.000045 m). For this pipe determine (a)the Reynolds number and decide weather the flow is laminar or turbulent (b) the head loss, (c) the pressure drop, and (d) the pumping power requirement to overcome this pressure drop.
F2018-Hwr Ar ows through the galvanized steel duct so that the flow is the greatest possible...
F2018-Hwr Ar ows through the galvanized steel duct so that the flow is the greatest possible to remain laminar. Density and kinomatic viscosity of ar are p, - 1 202 kg/ and 15.1(10 ) m2/s The crtical Reynolds number is 2300 Use the hydraulic diameter of the duct Dotermine the vokumenic air fow Express your answer to three significant Units ApValue Units lype here to search
CM&B: 11.3 The principal characteristics of steady flow in a wide rectangular channel are: The mean...
CM&B: 11.3 The principal characteristics of steady flow in a wide rectangular channel are: The mean velocity (V) The frictional resistance (F The density (p) and viscosity (u) of the fluid The depth (y) of flow or the channel length (Z)- as appropriate The bed slope (So) and surface roughness (k) Gravitational acceleration (g) Show that these can be expressed in the form of the following II groups: РVy Reynolds No. Re V Froude No Fr gy ks Relative roughness...
Part 4: Viscous Flow Concepts (10 points,5 each) The flow through a duct is fully-developed, with...
Part 4: Viscous Flow Concepts (10 points,5 each) The flow through a duct is fully-developed, with a velocity profile as shown in the figure. has a rectangular cross section, and the velocity profile is uniform in the z-direction (it does not change going into the page) If we wish to determine the mass flow rate through the duct, which differential area would we use? Why? If we wish to determine the forced caused by shear stress on the bottom wall,...
Q2 A main trunk duct of air-conditioning system shown in Figure 2 is rectangular in cross-section...
Q2 A main trunk duct of air-conditioning system shown in Figure 2 is rectangular in cross-section (40 cm x 80 cm). Air at atmospheric pressure and temperature of 20c flows inside the duct with velocity of 7 m/s. The cross sectional srea snd definition of characteristic length for the duct are given in Figure 2. The duct is assumed to be m long. The flow inside the duct is assumed fully developed. (a)Find properties of air using suitable value of...
2. (20%) Air at the 25 °C with a mass flow rate of m- 0.01 kg/sec...
2. (20%) Air at the 25 °C with a mass flow rate of m- 0.01 kg/sec enters a rectangular duct 0 6 em cross section and 2 m long. The duct wall is subjected to a uniform heat flux of qKw temperature of the air and the duct surface temperature at the duct outlet (A hydrod1.568 x 103 mls,Pr developed flow). Air properties to be used are:ρ-1.1774 kgm, C,-1.0057 0.708, k -0.02624 w/m-oC. 5 kw/m2. Determine the oulet ically and...
4. Air at 200 °C is flowing inside rectangular tube (2cm x 6cm cross section) with...
4. Air at 200 °C is flowing inside rectangular tube (2cm x 6cm cross section) with velocity 10 m/s. The surface of rectangular tube is assumed as constant heat flux condition. The surface temperature is higher than bulk temperature) by 20 C. Assume the following heat transfer correlation in the rectangular tube. (40 point) 0.03Rea0Pr03 0.81 Nud (a) Calculate hydraulic diameter of the rectangular tube. (b) Calculate Reynolds number and convection heat transfer coefficient. (c) Calculate heat transfer rate for...
AIR ENTER A 5-M-LONG SECTION OF A RECTANGULAR DUCT OF CROSS SECTION 12*18 CM MADE OF...
AIR ENTER A 5-M-LONG SECTION OF A RECTANGULAR DUCT OF CROSS SECTION 12*18 CM MADE OF COMMERCIAL STEEL AT 1 ATM AND 35ºc AT AN AVERAGE VEL OF 6M/S. DISGREGARDING THE ENTRANCE EFFECTS, DETERMINE THE FAN POWER NEEDED TO OVERCOME THE PRESSURE LOSSES IN THIS SECTION OF THE DUCT.
Recall that the Reynolds number is a dimensionless number that we use to discuss the flow...
Recall that the Reynolds number is a dimensionless number that we use to discuss the flow charecteristics of moving fluids. Generally speaking it is the ratio of momentum forces to viscous forces, and it depends on the diameter of the pipe, the density of the fluid, the velocity of the moving fluid, and the viscosity of the moving fluid. It is normally given by Re Where Re - Reynolds number [dimensionless) p- fuid density v- fud velocity D- pipe diameter...
с 79% 251 PM Sat Apr 27 2. A solid sphere of diameter d and density ph falls in a fluid of density p and kinematic viscosity u.The gravitational acceleration is g and the terminal velocity is y (...
с 79% 251 PM Sat Apr 27 2. A solid sphere of diameter d and density ph falls in a fluid of density p and kinematic viscosity u.The gravitational acceleration is g and the terminal velocity is y (a) Determine the non-dimensionalt o for dependence of the viscosity on the other parameters. (b) If a model sphere with di-d/z is use test, determine the kinematic viscosity of the fluid and the terminal velocity vi that make the problem similar. (25...
F2018-Hwr Ar ows through the galvanized steel duct so that the flow is the greatest possible to remain laminar. Density and kinomatic viscosity of ar are p, - 1 202 kg/ and 15.1(10 ) m2/s The crtical Reynolds number is 2300 Use the hydraulic diameter of the duct Dotermine the vokumenic air fow Express your answer to three significant Units ApValue Units lype here to search
CM&B: 11.3 The principal characteristics of steady flow in a wide rectangular channel are: The mean velocity (V) The frictional resistance (F The density (p) and viscosity (u) of the fluid The depth (y) of flow or the channel length (Z)- as appropriate The bed slope (So) and surface roughness (k) Gravitational acceleration (g) Show that these can be expressed in the form of the following II groups: РVy Reynolds No. Re V Froude No Fr gy ks Relative roughness...
Part 4: Viscous Flow Concepts (10 points,5 each) The flow through a duct is fully-developed, with a velocity profile as shown in the figure. has a rectangular cross section, and the velocity profile is uniform in the z-direction (it does not change going into the page) If we wish to determine the mass flow rate through the duct, which differential area would we use? Why? If we wish to determine the forced caused by shear stress on the bottom wall,...
Q2 A main trunk duct of air-conditioning system shown in Figure 2 is rectangular in cross-section (40 cm x 80 cm). Air at atmospheric pressure and temperature of 20c flows inside the duct with velocity of 7 m/s. The cross sectional srea snd definition of characteristic length for the duct are given in Figure 2. The duct is assumed to be m long. The flow inside the duct is assumed fully developed. (a)Find properties of air using suitable value of...
2. (20%) Air at the 25 °C with a mass flow rate of m- 0.01 kg/sec enters a rectangular duct 0 6 em cross section and 2 m long. The duct wall is subjected to a uniform heat flux of qKw temperature of the air and the duct surface temperature at the duct outlet (A hydrod1.568 x 103 mls,Pr developed flow). Air properties to be used are:ρ-1.1774 kgm, C,-1.0057 0.708, k -0.02624 w/m-oC. 5 kw/m2. Determine the oulet ically and...
4. Air at 200 °C is flowing inside rectangular tube (2cm x 6cm cross section) with velocity 10 m/s. The surface of rectangular tube is assumed as constant heat flux condition. The surface temperature is higher than bulk temperature) by 20 C. Assume the following heat transfer correlation in the rectangular tube. (40 point) 0.03Rea0Pr03 0.81 Nud (a) Calculate hydraulic diameter of the rectangular tube. (b) Calculate Reynolds number and convection heat transfer coefficient. (c) Calculate heat transfer rate for...
Recall that the Reynolds number is a dimensionless number that we use to discuss the flow charecteristics of moving fluids. Generally speaking it is the ratio of momentum forces to viscous forces, and it depends on the diameter of the pipe, the density of the fluid, the velocity of the moving fluid, and the viscosity of the moving fluid. It is normally given by Re Where Re - Reynolds number [dimensionless) p- fuid density v- fud velocity D- pipe diameter...
с 79% 251 PM Sat Apr 27 2. A solid sphere of diameter d and density ph falls in a fluid of density p and kinematic viscosity u.The gravitational acceleration is g and the terminal velocity is y (a) Determine the non-dimensionalt o for dependence of the viscosity on the other parameters. (b) If a model sphere with di-d/z is use test, determine the kinematic viscosity of the fluid and the terminal velocity vi that make the problem similar. (25...
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