Calculate Reynolds Number for flow of water at a speed of 1 cm/s in a circular...
Calculate Reynolds Number for flow of water at a speed of 1 cm/s
in a circular channel with a diameter of
100
Homework Answers
Reynolds number is 1. the flow is laminar as reynolds number is less than 2000.
Where ? is the density of the fluid,
V is the velocity of the fluid,
? is the density of fluid,
? is the viscosity of fluid,
L is the length or diameter of the fluid.
take density as 998kg/m3 and viscosity as .001 kg/m.s.
Add Answer to:
Calculate Reynolds Number for flow of water at a speed of 1 cm/s
in a circular...
a. Calculate the Reynolds number for flow in a pipe that transports water at 50°C at...
a. Calculate the Reynolds number for flow in a pipe that transports water at 50°C at a speed of 8 ft/s. The pipe has an inside diameter of 2.469 in. The density of water at 50°C is equal to 61.6 lb/ft3 . b. Calculate the Reynolds number for flow in a pipe that transports a liquid with a density of 931 kg/m3 and a viscosity of 2.5x10-3 Pa-s. The liquid flows at a rate of 4.3 m3/s and the pipe...
3. Water flows at a uniform velocity of 1 em/s in a circular channel of diameter...
3. Water flows at a uniform velocity of 1 em/s in a circular channel of diameter 2 cm and length 2 m. A uniform heat flux of 10 W/m2 is supplied at the surface. Assume laminar flow and developed flow and temperature. (a) Calculate the variation of the mixing cup temperature with distance and the Nusselt number. (b) If the mixing cup temperature at the inlet is 22 oC, calculate the mixing cup and wall temperatures at the outlet? (e)...
The required water flow rate in the 6 cm diameter 30-meter long circular pipe in the...
The required water flow rate in the 6 cm diameter 30-meter long circular pipe in the diagram below is 12 liters per second. The water temperature is 4 °C and the flow discharges into the atmosphere at a pressure of PB = 100 kPa. The flow is fully developed turbulent flow and there is no elevation change. The surface of the wall has become degraded due to pitting and deposits such that there is a surface roughness with a height...
Calculate the Reynolds number, Re- (2rpv)/ n, for the following situations and decide whether the flow...
Calculate the Reynolds number, Re- (2rpv)/ n, for the following situations and decide whether the flow of fluid around them is laminar or turbulent. Then calculate the frag force using the appropriate formula. For the radius, use r 2(Area/perimeter) which, for a circle, gives the radius. Densities and viscosities are in the table on page 2. Also, to keep things uniform, we will use the boundaries for laminar and turbulent flow from Engineer's Toolbox, also on pg. 2 [1] A...
86. Calculate the Reynolds numbers for the flow of water through (a) a nozzle with a...
86. Calculate the Reynolds numbers for the flow of water through (a) a nozzle with a radius of 0.250 cm and (b) a garden hose with a radius of 0.900 cm, when the nozzle is attached to the hose. The flow rate through hose and nozzle is 0.500 L/s. Can the flow in either possibly be laminar? 62. (a) Calculate the retarding force due to the viscosity of the air layer between a cart and a level air track given...
Question 1: (20 marks) On a circular conduit there are different diameters: diameter Di 1 m chang...
Question 1: (20 marks) On a circular conduit there are different diameters: diameter Di 1 m changes into D2 2 m. The velocity in the entrance profile was measured: v 3 m/s. Calculate the discharge mean velocity at the outlet profle (sce fig. 1). Also, determine the type of flow in both conduit profiles (whether the flow is laminar or turbulent) assume temperature of water following data. T-12° C. Use the Pw 997 kg/m3 Repeat the previous calculations assuming that...
Write the solution of the maximum Reynolds number of the flow passing over the tube bundle...
Write the solution of the maximum Reynolds number of the flow
passing over the tube bundle here.
(b) Estimate the average Nusselt number of the flow passing over
the tube bundle. (choose the closest answer)
Write the solution of the average Nusselt number of the flow
passing over the tube bundle here
(c) Estimate the number of required transverse rows. (choose the
closest answer)
Write the solution of the number of required transverse rows
here.
Question 13 (5 points) We...
Calculate the Reynolds number, Re = (2rρv)/ η , for the following situations and decide whether...
Calculate the Reynolds number, Re = (2rρv)/ η , for the following situations and decide whether the flow of fluid around them is laminar or turbulent. Then calculate the frag force using the appropriate formula. For the radius, use r = 2(Area/perimeter) which, for a circle, gives the radius. Densities and viscosities are in the table on page 2. Also, to keep things uniform, we will use the boundaries for laminar and turbulent flow from Engineer's Toolbox, also on pg....
3.54. Reynolds numbers for pipe flow may be expressed as 4m/td where mass flow, kg/s d...
3.54. Reynolds numbers for pipe flow may be expressed as 4m/td where mass flow, kg/s d pipe diameter, m viscosity, kg/m -s In a certain system the flow rate is 12 lbm/min. ±0.5 percent, through a 0.5-in-diameter (+0.005-in) pipe. The viscosity is 4.64 x 104 lbm/h ft, t1 percent. Calculate the value of the Reynolds number and its uncertainty. Use both the analytical and numerical techniques
85. Show that the Reynolds number is unitless by substituting units for all the quantities in...
85. Show that the Reynolds number is unitless by substituting units for all the quantities in its definition and cancelling. 86. Calculate the Reynolds numbers for the flow of water through (a) a nozzle with a radius of 0.250 cm and (b) a garden hose with a radius of 0.900 cm, when the nozzle is attached to the hose. The flow rate through hose and nozzle is 0.500 L/s. Can the flow in either possibly be laminar?
3. Water flows at a uniform velocity of 1 em/s in a circular channel of diameter 2 cm and length 2 m. A uniform heat flux of 10 W/m2 is supplied at the surface. Assume laminar flow and developed flow and temperature. (a) Calculate the variation of the mixing cup temperature with distance and the Nusselt number. (b) If the mixing cup temperature at the inlet is 22 oC, calculate the mixing cup and wall temperatures at the outlet? (e)...
Calculate the Reynolds number, Re- (2rpv)/ n, for the following situations and decide whether the flow of fluid around them is laminar or turbulent. Then calculate the frag force using the appropriate formula. For the radius, use r 2(Area/perimeter) which, for a circle, gives the radius. Densities and viscosities are in the table on page 2. Also, to keep things uniform, we will use the boundaries for laminar and turbulent flow from Engineer's Toolbox, also on pg. 2 [1] A...
86. Calculate the Reynolds numbers for the flow of water through (a) a nozzle with a radius of 0.250 cm and (b) a garden hose with a radius of 0.900 cm, when the nozzle is attached to the hose. The flow rate through hose and nozzle is 0.500 L/s. Can the flow in either possibly be laminar? 62. (a) Calculate the retarding force due to the viscosity of the air layer between a cart and a level air track given...
Question 1: (20 marks) On a circular conduit there are different diameters: diameter Di 1 m changes into D2 2 m. The velocity in the entrance profile was measured: v 3 m/s. Calculate the discharge mean velocity at the outlet profle (sce fig. 1). Also, determine the type of flow in both conduit profiles (whether the flow is laminar or turbulent) assume temperature of water following data. T-12° C. Use the Pw 997 kg/m3 Repeat the previous calculations assuming that...
Write the solution of the maximum Reynolds number of the flow
passing over the tube bundle here.
(b) Estimate the average Nusselt number of the flow passing over
the tube bundle. (choose the closest answer)
Write the solution of the average Nusselt number of the flow
passing over the tube bundle here
(c) Estimate the number of required transverse rows. (choose the
closest answer)
Write the solution of the number of required transverse rows
here.
Question 13 (5 points) We...
3.54. Reynolds numbers for pipe flow may be expressed as 4m/td where mass flow, kg/s d pipe diameter, m viscosity, kg/m -s In a certain system the flow rate is 12 lbm/min. ±0.5 percent, through a 0.5-in-diameter (+0.005-in) pipe. The viscosity is 4.64 x 104 lbm/h ft, t1 percent. Calculate the value of the Reynolds number and its uncertainty. Use both the analytical and numerical techniques
85. Show that the Reynolds number is unitless by substituting units for all the quantities in its definition and cancelling. 86. Calculate the Reynolds numbers for the flow of water through (a) a nozzle with a radius of 0.250 cm and (b) a garden hose with a radius of 0.900 cm, when the nozzle is attached to the hose. The flow rate through hose and nozzle is 0.500 L/s. Can the flow in either possibly be laminar?
Most questions answered within 3 hours.
-
Which of the following pairs of ions have the same electron
configuration?
I: Br− and Se2−...
asked 2 hours ago -
The Foremost Composite Materials Company is planning a two-day
sales conference for October 19-20. The conference...
asked 2 hours ago -
3) Illustrate the observed pattern of relatedness of organisms
versus adaptations to specific conditions. This means...
asked 2 hours ago -
In winter a lake has a 0.35 m thick ice layer over 1.10 m of
water....
asked 3 hours ago -
Assuming the following has been encrypted with a Vigenere cipher
below, use the method(s) and assumptions...
asked 4 hours ago -
How would I use switch statements to write a program that will
take an input of...
asked 4 hours ago -
Imagine a reaction in which methane gas combusts at a constant
pressure of 1 atm and...
asked 4 hours ago -
Two parallel wires (each 12 m in length) are separated by a
distance of 0.065 m...
asked 4 hours ago -
Suppose there were three masses at the corner of uniform
equilateral triangle. The masses are m1...
asked 4 hours ago -
Situation: A building that is 618 m above the ground floor. How
many times would a...
asked 4 hours ago -
help me and discuss one successful and one
unsuccessful international company/busines in Indonesia.whyit
succeed and why...
asked 4 hours ago -
I- Choose the best answer
Which of the following statements about the structure and
packaging of...
asked 4 hours ago