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Given the following flow paths and temperatures: Which of these is most likely true: C T wall o 80 = C T wall o 50 = 0 (1) = Dt DT darmofal: 1 0 (2) Dt DT
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Given the following flow paths and temperatures: Which of these is most likely true: (A) (B) C T wall o 50 = C T wall o 50 = C T wall o 80 = C T wall o 50 = C T wall o 80 = C T wall o 80 = 0 and 0 (1) = B A Dt DT Dt DT 0 and 0 (2) = B A Dt DT Dt DT darmofal: 4 0 and 0 (3) = = B A Dt DT Dt DT 0 and 0 (4) B A Dt DT Dt DT
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Given the following two-dimensional flow paths Which of these is most likely true: (3) Not enough information Arrows do not indicate velocity magnitude, only direction 0 (1) = Dt V D r 0 (2) Dt V D r darmofal: 3
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Given the following two-dimensional flow paths: Which of these is most likely true: (3) Not enough information Arrows do not indicate velocity magnitude, only direction 0 (1) = Dt V D r r darmofal: 2 0 (2) Dt V D
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Given the following streamlines for a steady, two dimensional flow: Which of these flows is irrotational: (1) Only (a) (2) Only (b) (3) Both (a) & (b) (4) Neither (5) Not enough information (a) (b) darmofal: 5
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Consider the motion of two fluid elements: (a) (b) Which of these fluid element motions could be from an incompressible flow: (1) Only (a) (2) Only (b) (3) Both (a) & (b) (4) Neither (5) Not enough information t=0 t=dt t=0 t=dt darmofal: 1
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0 = = v h y u u wall wall u darmofal: 2 darmofal: 2 x y Couette Flow Viscous force acting on the lower wall is: (+0) = in +x direction (+1) = in -x direction Viscous force acting on the upper wall is: (+0) = in +x direction (+2) = in -x direction Choose one from each column and enter your total (0-3) OR Enter (4) for none of these combinations are correct
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x darmofal: 2 y 0 ) ( = = v y u u Consider channel flow as shown above. What is the net viscous force acting on the fluid in the x-direction (per unit depth)? 1) 2) 3) 4) 5) None of the above () ( ) [ ] [] L h h L h h L h h L h h yx yx yx yx yx yx yx yx × × + × × + τ
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