A 1000 micrometer water droplet falling through ambient air which contains 5micrometer particle with a density of 2g/cm3. Determine the penetration for (a) a particle size of 0.9 micrometers, a particle density of 1.8g/cm3, and an L value of 1.4. (b) A particle size of 0.8 micrometer, a particle density of 1.7 g/cm3, and an f value of 0.20 (c) A particle size of 1 micrometer, a particle density of 1.4 g/cm3, an air velocity of 450 ft/s and and f value of 0.20. In each case all other data remain the same

feed back to aid with ques-  (a) In this question a suspension is settling over time. As time progresses the volume of the clear layer at the top of the cylinder will increase. You know that the clear layer has a cylindrical shape. Therefore, you can calculate the height of the clear layer at each volume given using the equation for the volume of a cylinder. You are told that you can calculate the single particle velocity at time point 1 which corresponds to the point where the volume of the clear layer is 29 mL.     answers  Time (s)  0,1.6,5.3, 26.4

3 A constant-density Newtonian fluid is flowing as a thin film down a vertical wall in laminar flow; see Fig. 15.9. a. Find the velocity distribution and the volumetric flow rate per unit width of wall by using the Navier-Stokes equations (z component) on the assumptions that there is no flow in the x or y direction, that the z component of the velocity is zero at the solid wall, and that there is no shear stress at the liquid-air surface, and the flow is steady-state. (Waves may appear on the fluid surface in this situation; ignore that possibility for this problem). Solid wall * Air Thin liquid film Thickness Ax FIGURE 15.9 A thin liquid film flowing down a wall. b. Repeat the solution to Prob. 3a, showing both the velocity distribution and the volumetric flow rate, for the case in which the flow under the influence of gravity is between two parallel vertical plates, separated by the distance Ax. In Prob. 15.9 the pressure gradient in the flow direction was zero, because the film was…

17.29 An engineered tissue system consists of a slice of cell mass immobilized on a scaffold measuring 5 cm in length and 0.5 cm in thickness. The top face of the tissue scaffold is exposed to water, dissolved oxygen, and organic nutrients maintained at 30 C. The bottom face of the tissue is thermally insulated. At present, the specific oxygen consumption of the tissue mass is 0.5 mmol O₂/cm³cells-hr, and from respiration energetics, the energy released by respiration is 468 J/mmol O₂ consumed. We are interested in knowing the temperature at the bottom face of the tissue next to the insulated boundary. If this temperature remains below 37 C, the tissue will not die. The thermal conductivity of the tissue scaffold is k = 0.6 W/m. K. a. Using the information given predict the temperature profile within the tissue slab the slab. b. C. What is the heat generated per unit volume of tissue? Estimate the temperature at x =L (the insulated boundary).