A special type of flow is given by the velocity functions:
Q1.a) Consider a two dimensional, incompressible flow in cylindirical coordianates; the tangential velocity component is uq K/r, where K is a constant. Generate an expression for the other velocity components, u.. b) Velocity profile in the pipe flow is given Determine; i) Potential and stream functions, ii) Define the stream function at the wall iii) Draw the stream and potential lines in the pipe flow Q1.a) Consider a two dimensional, incompressible flow in cylindirical coordianates; the tangential velocity component is...
Incompressible fluid flow field 2. (a) An incompressible fluid flow field is given as Vx = x2+y+z2 and Vy=xy+yz+z, what is V?=? that satisfies continuity equation? (b) Plot the 2-D flow field represented by Vx=2y, Vy=4x. First obtain an expression for stream function, and then plot flow lines corresponding to constant stream function values.
Q1. (a) The velocity components of a certain two-dimensional flow field are claimed to be given by u =-Cy and v = Cx , where is a constant. (i) Does this velocity distribution satisfy continuity? If yes, what is the stream function y? (8 marks) (ii) Analyse whether the flow is rotational or irrotational. What is the velocity potential o ? (4 marks) (iii) Sketch several y and © lines (if exist) of the flow field. Briefly explain how you...
Q1. (a) The velocity components of a certain two-dimensional flow field are claimed to be given by u = -Cy and v = Cx , where is a constant. (i) Does this velocity distribution satisfy continuity? If yes, what is the stream function y ? (8 marks) (ii) Analyse whether the flow is rotational or irrotational. What is the velocity potential o ? (4 marks) (iii) Sketch several y and lines (if exist) of the flow field. Briefly explain how...
a) Derive the general stream function of a potential flow around a cylinder of radius R given the stream functions Y of a uniform flow and a doublet are uniformUy 'doublet where Uis the speed of the uniform flow and C is the strength of the doublet. (5 marks) b) Find the specific stream function assuming the streamline on the surface of the cylinder is Ψ-0 (5 marks) c) Find the velocities at two points (-3R, 0 and (-2R, 0)....
A two dimensional incompressible flow is given by the velocity field V = 3yi + 2xj, in arbitrary units. Does this flow satisfy continuity? If so, find the stream function ψ(x,y) and plot a few streamlines, with arrows.
W The stream function « in a two-dimensional flow field is given as Q = 4x – 3y + 7xy (a) Prove that this flow field is irrotational and that it satisfies the continuity equation. (b) Find the potential flow function 0(x, y) for this flow field with boundary condition Q = 0 at x = 2, y = 1.
2. The velocity potential for a spiral vortex flow is given by φ-2nInr-2-9, where A (positive) is the sink strength and Γ is the vortex strength (1) Find the expression of stream function. (2) The plot of stream function is shown in the following figure. Prove the angle,a, between the 2Tt velocity vector and the radial direction is constant throughout the flow field. (FYI, this spiral is called Logarithmic spiral.) .y
Start with the stream functions of a uniform horizontal flow Var sin θ and of the doublet k sin θ 2π a) Derive the streamfunction for the flow over a cylinder b) Find expression for velocity field (u, v) c) Plot the velocity magnitude on the surface for all angels (r-R, θ) d) Plot the velocity magnitude directly above the cylinder (r> R, t/2) e) Plot pressure on the surface for all angels (r-R, θ) Start with the stream functions...
Question 1 (40 points) From potential flow theory, the combination of a doublet and a uniform flow gives the flowfield around a cylinder. The resulting velocity potential for the flow is given by: A cos Ur cos e The resulting velocity field in cylindrical coordinates is given by - = 4 r ae ar where e, and eo are the unit vectors in cylindrical polar coordinates, Uo is the free-stream velocity and A an arbitrary parameter. a) (10 points) Determine...