Concept explainers
Consider a steady, two-dimensional, incompressible, irrotational velocity field specified by its velocity potential function,
Want to see the full answer?
Check out a sample textbook solutionChapter 10 Solutions
Fluid Mechanics: Fundamentals and Applications
- A velocity field is described (in Cartesian coordinates) by u = 2−x3/3, v = x2y−zt, w = 0. (a) Write down the y-component of the acceleration of a fluid particle (in the Eulerian system) for this flow field. (b) Is this flow field incompressible?arrow_forward[2] Consider the following stedy, incompressible, two-dimensional velocity field: V=(u,v)=(0.5+1.2x) 7+ (-2.0-1.2y) Generate an analytical expression for the flow streamlines and draw several streamlines in the upper-right quadrant from x=0 to 5 and y=0 to 6. (Here use the relation: dy/dx=v/u in the streamlines.)arrow_forward3. The two-dimensional velocity field in a fluid is given by V 2ri+ 3ytj. (i) Obtain a parametric = equation for the pathline of the particle that passed through (1.1) at t = 0. (ii) Without calculating any equation: if I were to draw the streak-line at t = 0 of all points that passed through (1, 1) would it be the same or different? Justify yourself.arrow_forward
- i dont understand the questionarrow_forwardFor an Eulerian flow field described by u = 2xyt, v = y3x/3, w = 0: (a) Is this flow one-, two-, or three-dimensional? (b) Is this flow steady? (c) Is this flow incompressible? (d) Find the x-component of the acceleration vector.arrow_forwardA velocity field is given by u = 5y2, v = 3x, w = 0. (a) Is this flow steady or unsteady? Is it two- or three- dimensional? (b) At (x,y,z) = (3,2,–3), compute the velocity vector. (c) At (x,y,z) = (3,2,–3), compute the local (i.e., unsteady part) of the acceleration vector. (d ) At (x,y,z) = (3,2,–3), compute the convective (or advective) part of the acceleration vector. (e) At (x,y,z) = (3,2,–3), compute the (total) acceleration vector.arrow_forward
- An Eulerian velocity vector field is described by V = 2i + yz2tj −z3t3k, where i, j and k are unit vectors in the x-, y- and z-directions, respectively. (a) Is this flow one-, two-, or three-dimensional? (b) Is this flow steady? (c) Is the flow incompressible or compressible? (d) Find the z-component of the acceleration vector.arrow_forwardPlease answer botharrow_forwardConverging duct flow is modeled by the steady, two- dimensional velocity field V = (u, v) = (U₁ + bx) i-by. For the case in which Ug = 3.56 ft/s and b = 7.66 s¯¹, plot several streamlines from x = 0 ft to 5 ft and y=-2 ft to 2 ft. Be sure to show the direction of the streamlines. (Please upload you response/solution using the controls provided below.)arrow_forward
- An Eulerian velocity vector field is described by V = 2x2yi − 2xy2j − 4xyk, where i, j and k are unit vectors in the x-, y- and z-directions, respectively. (a) Is the flow one-, two- or three-dimensional? (b) Is the flow compressible or incompressible? (c) What is the x-component of the acceleration following a fluid particle? (d) Bonus question: Is the flow irrotational?arrow_forwardAn Eulerian velocity field in Cartesian coordinates is given by u = x2y, v = −xy2,w = 2xy. (a) Is the flow field two- or three-dimensional? (b) Is this flow field compressible or incompressible? (c) Is this flow field rotational or irrotational?arrow_forward4. Consider a velocity field V = K(yi + ak) where K is a constant. The vorticity, z , is (A) -K (B) K (C) -K/2 (D) K/2arrow_forward
- Elements Of ElectromagneticsMechanical EngineeringISBN:9780190698614Author:Sadiku, Matthew N. O.Publisher:Oxford University PressMechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSONThermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
- Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEYMechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage LearningEngineering Mechanics: StaticsMechanical EngineeringISBN:9781118807330Author:James L. Meriam, L. G. Kraige, J. N. BoltonPublisher:WILEY