An important design consideration in two-phase pipe flow of solid-liquid mixtures is the terminal settling velocity below, which the flow becomes unstable and eventually the pipe becomes clogged. On the basis of extended transportation tests, the terminal settling velocity of a solid particle in the rest water given by
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Fluid Mechanics: Fundamentals and Applications
- Air (its gas constant is 287 J/kg.k) escapes from a tank at a temperature of 55 C and specific internal energy of u= 7508 J/kg, what will be its enthalpy (J/kg)? Select one: a. 101644.00 b. 21644.00 c. 61644.00 d. 41644.00 e. 81644.00arrow_forward6.Calculate the total mass of precipitable water (the answer in tons) in the saturated air column 9.5 km high above 4.8 km2 (square kilometers) of the ground surface. The surface pressure is 101.2 kPa, the surface air temperature is 23 °C, and the lapse rate is 6.1°C/km. Taking the increment in elevation by 1.5 km, the gas constant Ra can be considered as 287 J/kg-K.arrow_forwardthermodyanmics (Ideal Gas) one pound of air with an initial temperature pf 200F is allowed to expand without flow between pressure of 90 and 15 psia. If the air is undergoing a process that follows pVn=c, where n=1.4, what is the heat transferred in Btu?arrow_forward
- full solutionarrow_forwarddo with a solutionarrow_forwardPick the right combination of TRUE statements? (i) The maximum amount of moisture air can hold depends upon its temperature and barometric pressure (ii) Perfect gas model can be applied to air-water mixtures when the total pressure is high (iii) The minimum number of independent properties to be specified for fixing the state of moist air is two (iv) The Dalton's law of partial pressure is applicable to the moist air. O (i) and (iv) (ii) and (iv) O (i) and (iii) (i) and (iii)arrow_forward
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- The same engineer decides to look into rates of cooling for liquids toexperiment with different cooling solutions for servers. She finds thatthe rate of cooling for one liquid can be modelled by the equation:y = 48 × 0.99t(0 ≤ t ≤ 80)where y is the temperature of the liquid in degrees Celsius and t is thetime in minutes.(i) State whether the type of reduction for this model is linear orexponential. Describe how reduction rate differs between linear andexponential functions. (ii) Calculate the temperature when t = 20. [3](iii) Write down the scale factor and use this to find the percentagedecrease in the temperature per minute. (iv) Use the method shown in Subsection 5.2 of Unit 13 to find the timeat which the temperature is 30◦(v) Determine the halving time of the temperature.arrow_forwardA sample containing 1.0 mole of oxygen gas initially at 45 degrees Celsius is heated to 110 degrees Celsius under isobaric conditions. Assuming that the accurate Cp value for oxygen gas can be obtained from the relationship given below, what would be the sample's new change in enthalpy (in KiloJoules)? Write the answer in THREE SIGNIFICANT FIGURESarrow_forwardQ4/ A liquid mixture is prepared by combining N different liquids with densities pi; p2; ...; PN. The volume of component i added to the mixture is V, and the mass fraction of this component in the mixture is x. The components are completely miscible. The following two formulas provide estimates of the density of the liquid mixture, p, if the volume of the mixture equals the sum of the pure-component volumes. Only one of the formulas is correct, however. (1) p = xPı (1) Determine whether () or (i) is the correct formula (show your proof), and then use the correct formula to estimate the density (g/cm) of a liquid mixture containing 60.0 wt% acetone, 25.0 wt% acetic acid, and 15.0 wt% carbon tetrachloride.arrow_forward
- Refrigeration and Air Conditioning Technology (Mi...Mechanical EngineeringISBN:9781305578296Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill JohnsonPublisher:Cengage Learning