Compute the terminal settling velocity in air of a sphere with density of 1,000 kg/m3. The sphere with a diameter of 10 μm falls through standard air (25 °C and 1 Atm).
Compute the terminal settling velocity in air of a sphere with density of 1,000 kg/m3. The...
1) Consider particles characterized with a density of 1.5 g/cm3. At 250C and 1 atm determine the terminal settling velocity of particles falling in air that are: a) 15, b) 25, and c) 150 μm Assume density of air is 1.2 kg/m' and viscosity of air is 6.66 x 102 kg/m. hr
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...
For a smooth sphere with a 14 cm diameter thrown through air (air density of 1.25 kg/m3, air viscosity 1.83*10-5 Pa-s), what is the speed (in cm/s) when the Reynoldsnumber is 3,005?
Calculate the terminal velocity for a pollen grain falling through the air using the drag force equation. Assume the pollen grain has a diameter of 7 µm and a density of 0.3 g/cm3. If this grain is released from the top of a tree (height 11 m), estimate the time it will take to fall to the ground. Hint: The pollen grain will reach its terminal velocity very quickly and will have this velocity for essentially the entire motion. Your...
a) Find the density of air (in kg/m3) at a pressure of 1.00 atm and a temperature of 35.0°C, assuming that air is 78% N2, 21% O2, and 1% Ar. kg/m3 b) Find the density of the atmosphere on Venus (in kg/m3), assuming that it's 96% CO2 and 4% N2, with a temperature of 724 K and a pressure of 92.0 atm.
Determine the settling velocity (m/s) of a sand particle with a density of 2.6 g/cm3 and 1 mm diameter. νw = 1.307x10-6 m2/s and ρw = 998 kg/m3.
A 22 cm diameter bowling ball has a terminal speed of 75 m/s. Suppose that the density of air is 1.2 kg/m3. PART A: What is the ball's mass?
Lead shot is made by dropping molten lead (ρ = 10,600 kg/m3) from a drop tower. Each pellet, a sphere 2-mm in diameter, is cooled as it passes through air at 10 ºC. Assume the shot falls at its terminal velocity. The lead must be solidified from its molten state at 327 ºC to a solid state before it reaches the pool of water at the bottom of the drop tower. The enthalpy of fusion for lead is 24.5 kJ/kg....
A light, plastic sphere with mass m = 9.00 g and density ρ = 5.00 kg/m3 is suspended in air by thread of negligible mass. a)What is the tension T in the thread if the air is at 5.00∘C and p = 1.00 atm? The molar mass of air is28.8 g/mol. b)How much does the tension in the thread change if the temperature of the gas is increased to 35.0 ∘C?Ignore the change in volume of the plastic sphere when...
Catalyst pellets of 5 mm diameter are to be fluidized with 45,000 kg/h of air at 1 atm and temp. 30 C in a vertical cylindrical vessel. The density of the catalyst particles is 850 kg/m3; their sphericity is 0.85. The given quantity of air is just sufficient to fluidize the solids. Determine the vessel diameter and terminal velocity. Show pressure drop versus superficial velocity characteristic curve showing both fixed and fluidized bed region. Assume void fraction (under fixed bed...