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
- II A volume of compressed air storage tank is 0.3m3, and the air pressure P1 in the tank is 1MP.. When a part of compressed air is used, the pressure P2 of the air in the tank decreases to 0.9 MPa. Set the room temperature at 20 ° C, calculate the mass of original air ml and the mass of residual air m2. Air gas constant Rg = 287.1 J/ (kg - K)).arrow_forwardAir (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_forwardMethanol (SG=0.792) is contained in a large tank under a pressure of 350000 Pa absolute. When a valve on the bottom of the tank is opened, the methanol drains freely though a 0.02 m ID tube whose outlet is 7.00 m below the surface of the methanol. The pressure at the outlet of the discharge pipe is 101325 Pa. Some useful constants and conversions: g = 9.8 m/s2 , Pref = 1000 kg/m3 . a. Draw the system. Label points I and 2 (where you will define A= 2-1) and label the variables with values b Write the general form of the energy balance. Cancel out negligible terms, and state the keyword/assumption to justify. Simplify to the resultant energy balance. c.) Assume the diameter of the tank is very big compared to the drain tube velocity, which make the velocity of liquid in the tank equal to zero. Estimate the methanol discharge velocity in the drain tube in m/s. *hint: divide your EB by m to eliminate m and V. Recall, n = pV = pvA and = v/m=1/parrow_forward
- A container is filled with a mixture of 2 fluids having densities of 3 kg/L (fluid A) and 4000 kg/m^3 (fluid B). What will be the overall density (in g/cm^3) of the mixture of 1/4 of the container is filled with fluid A and 1/2 is filled with fluid B?arrow_forwardA container is filled with a mixture of 2 fluids having densities of 5 kg/L (fluid A) and 400 kg/m^3 (fluid . What will be the overall density (in g/cm^3) of the mixture of 1/3 of the container is filled with fluid A and 1/4 is filled with fluid B?arrow_forwardA container holds 200 gal of brine solution containing 50 lb of salt. Initially, fresh water is poured into the tank at a rate of 10 gal/min, while the well-stirred mixture leaves the tank at the same rate. In this setup, the volume of the solution is increasing at any time t. O Partially true. O True. O Insufficient information to state its truth value. O False.arrow_forward
- 6.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_forwardUsing the following information, determine the vapor pressure of water at 300 °C. Note: We started this problem in week 6 lecture 3. Please refer to the lecture to get started on this problem. You only need to show your work starting from where the lecture left off. H₂0 at T = 179.88 degrees C the vapor pressure is PSAT = 10 bar. The enthalpy of vaporization is 2014.59 kJ/kg V = 0.1944 m³/kg V¹ = 0.001127 m³/kg The equation we left off on in class was, cpf 1 [P² psat dpsat pi psat Tf 1 ∆vapH (TF 1 RAZ Ti dT T2aarrow_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
- Question 1. The 'Brusselator' reaction mechanism proposed in 1968 is schematically represented as A 1, X, k1. B+ X 2, Y + D, (1) 2X +Y 3X, x k, E, where k;, i = 1,2, 3,4 are the constant parameters for the rates of reaction, and the reactants A and B are kept constant.arrow_forwardTwo liquids of different densities (ρ 1 = 1550 kg m /m 3 and ρ 2 = 550 kg m /m 3 ) are poured together in acylindrical container 0.5 m in diameter x 1 m height. If the resulting density of the mixture is 850 kg m m 3 ,determine a) the mass of each liquid inside the tank (kg m ), b) the weight of the mixture in kg f if g = 9.79m/s 2 .arrow_forwardThe correct sequence of decreasing the gas constant of the different gases is --- Given: Molecular mass of O, = 32 Kg/Kmol, Molecular mass of H, = 2 Kg/Kmol and Molecular mass of CH = 16 Kg/Kmol Select one: O a. H, CH, and 0, O b. 0, CH, and H, O c.0, H, and CH, O d. CH 0, and H,arrow_forward
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