Engineering, 21.11.2019 02:31, famouzgal
Consider steady, incompressible, laminar flow of a newtonian fluid in an infinitely long round pipe annulus of inner radius ri and outer radius ro ignore the effects of gravity. a constant negative pressure gradient _p/_x is applied in the x-direction, (∂p/∂x)=(p1-p2)/(x2-x1) where x1 and x2 are two arbitrary locations along the x-axis, and p1 and p2 are the pressures at those two locations. the pressure gradient may be caused by a pump and/or gravity. note that we adopt a modified cylindricaloordinate system here with x instead of z for the axial component, namely, ( r, θ ,x) and (ur, uθ ,ux) derive an expression for the velocity field in the annular space in the pipe.
Answers: 3
Engineering, 04.07.2019 18:10, kevin72836
Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?
Answers: 2
Consider steady, incompressible, laminar flow of a newtonian fluid in an infinitely long round pipe...
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