Engineering, 07.11.2019 02:31 Kyliehayden05
Reproducing eqs. 15, 18 and 19 from the typed notes on turbulence for this course, the reynolds-averaged navier-stokes (rans) equations for a constant- density turbulent flow which is steady and whose mean flow is two-dimensional may be written as consider applying these equations to a turbulent boundary layer. the mean flow continuity equation displayed here has the same form as for a laminar boundary layer. we may assume, as usual, that the boundary layer is thin, which means the mean streamwise velocity (u) varies mainly with distance y from the wall. in addition, for this flow the reynolds stress components u, id v2 are generally of the same order of magnitude (a) with the statements made above, show how eqs. 2 and 3 can be simplified for the case of a turbulent boundary layer on a flat plate, at zero angle of attack (b) explain, in your own words, and with appropriate sketches, why uv is expected to be of opposite sign to u, especially near the wall.
Answers: 3
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 18:20, Doogsterr
For each of the following process: a) sketch the p-v diagram, b)sketch t-s diagram, c) sketch t-v diagram, d) sketch the boundary work on one of the diagrams (a, b or c) and e) sketch the reversible heat transfer on one of the diagrams (a, b or c): 1- isobaric process from compressed liquid to superheated vapor 2- isothermal process from compressed liquid to superheated vapor 3- isentropic process from compressed liquid to superheated vapor
Answers: 3
Engineering, 04.07.2019 19:10, Mimidj9279
The sum of the normal stresses does not change as the stress state rotates through an angle. a)-trune b)- false
Answers: 2
Reproducing eqs. 15, 18 and 19 from the typed notes on turbulence for this course, the reynolds-aver...
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