KNOWN: Flowrate and temperature of water in fully developed flow through a tube ofprescribed diameter.FIND: Maximum velocity and pressure gradient.SCHEMATIC:Waterm = 0.01kg/sTm=27°CD=25mmASSUMPTIONS: (1) Steady-state conditions, (2) Isothermal flow, (3) Horizontal tube.-6.PROPERTIES: Table 4-6, Water (300 K): p = 998 kg/m³, µ = 855 × 10″б N·s/m².

Answered: KNOWN: Flowrate and temperature of…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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This question please
In mechanical fluid
A laminar flow element measures low gas-flow rates with a bundle of capillary tubes packed inside a large outer tube. Consider oxygen flowing at 84 ft3/min in a 4-in-diameter pipe. (i) Is the flow approaching the element turbulent? (ii) If there are 1000 capillary tubes, Length L, is 4 in, select a tube diameter to keep Reynold’s number below 1500 and also to keep the tube pressure drop not greater than 0.5 lbf/in2. (iii) Do the tubes selected fit nicely within the approach pipe?
Problem 3 Water at 20 °C (p = 998 kg/m³ and v= 1.004 x 10-6 m²/s) flows through a horizontal pipe of 0.1-m diameter and 2 km long at an average velocity of 4.0 m/s. Suppose the friction coefficient at the pipe is f = 0.022. (a) Calculate the flow rate. Is the flow laminar or turbulent? (b) What is frictional head loss? (c) Determine the friction velocity and the thickness of the viscous sublayer. (d) Determine the centerline velocity and the velocity at 0.025 m above the pipe wall (point A). D 0.1 m A 0.025 m
Find the related Average Nusselt number equation
Gas oil at 210 °C is to be cooled to 30 °C and its flow-rate is 20,000 kg/h. The temperature available of cooling water is 25 °C to 55 °C. The pressure drop allowance for each stream is 100 kN/m2. Design Tube-side and Shell-side coefficient Physical properties Water Gas oil T, °C 40 120 Cp, kJ kg1 °C-1 k, kWm-l °C-1 4.18 2.28 631 x 10-6 0.125 µ, mNm2 s 671 x 10-3 0.17 P, kg m3 850 992.8
What’s the answer for this please ?
Q3- Consider a fluid flow in round tube of length 1m and diameter 5mm. Classify the flow as laminar and turbulent and calculate the entrance length for (a) air (50 °C) with a speed of 12 m/s. (b) water (17.5°C) and mass flow rate of 8 g/s. (Vair = 1.79x105 m²/s and water 1.14x10-5 N.s/m²).
Find the related Average Nusselt number equation
Problem-2 For the turbulent incompressible boundary layer, the velocity profile is given as u/Ue, y = y/8, Ue and d are boundary-layer edge velocity where, u = and boundary layer thickness, respectively. Using momentum integral equation, prove that: 8/x = 0.383/Re,/5 8% /x = 0.0479/Re/5 and 0/x = 0.0372/Re/5
Q3

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