Engineering, 03.07.2020 16:01, Affousietta
The following statements are about the laminar boundary layer over a flat plate. For each statement, answer whether the statement is true or false.
1. At a given x-location, if the Reynolds number were to increase, the boundary layer thickness would also increase.
A. True B. False
2. As outer flow velocity increases, so does the boundary layer thickness.
A. True B. False
3. As the fluid viscosity increases, so does the boundary layer thickness.
A. True B. False
4. As the fluid density increases, so does the boundary layer thickness.
A. True B. False
5. The boundary layer equations are approximations of the Navier-Stokes equation.
A. True B. False
6. The curve representing boundary layer thickness as function of x is a streamline.
A. True B. False
7. The boundary layer approximation bridges the gap between the Euler equation and the Navier-Stokes equation.
A. True B. False
Answers: 1
Engineering, 03.07.2019 14:10, volleyballfun24
If the thermal strain developed in polyimide film during deposition is given as 0.0044. assume room temperature is kept at 17.3 c, and thermal coefficient of expansion for the film and the substrate are 54 x 10^-6c^-1 and 3.3 x 10^-6c^-1respectively. calculate the deposition temperature.
Answers: 3
Engineering, 04.07.2019 18:10, lillygrl100
For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater
Answers: 3
Engineering, 04.07.2019 18:20, rbgrh9465
An open feedwater heater operates at steady state with liquid entering at inlet 1 with t? = 40°c and pl = 1 .2 mpa. water vapor att2-200°c and p2 = 1.2 mpa enters at inlet 2. saturated liquid water exits with a pressure of pa 1.2 mpa. neglect heat transfer with the surroundings and all kinetic and potential energy effects, determine the mass flow rate of steam at inlet 2 if the mass flow rate of liquid water at inlet 1 is given as 2 kg/s.
Answers: 3
The following statements are about the laminar boundary layer over a flat plate. For each statement,...
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