15 degrees
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Explain the differences between the flow features (such as flow separation, wake, vortices), as the angle of attack increases from 0 to 15 degrees
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- Flow separation: Using sketch, briefly describe the phenomena of flow separation at an arterial bifurcation region; Explain the possible factors which may influence flow separation of this kind. If you select a line which is perpendicular to the main flow and passing the main flow region and the separated region, draw the possible velocity profile along that line.Streaklines are shown in Fig. for flow of water over the front portion of a blunt, axisymmetric cylinder aligned with the flow. Streaklines are generated by introducing air bubbles at evenly spaced points upstream of the field of view. Only the top half is shown since the flow is symmetric about the horizontal axis. Since the flow is steady, the streaklines are coincident with streamlines. Discuss how you can tell from the streamline pattern whether the flow speed in a particular region of the flow field is (relatively) large or small.Hello I want someone to answer this question as I have my doubts about this example question. I want to know how 50,000 Reynolds Number satisfies laminar conditions as a laminar flow would be of Reynolds number less than 2,000 and 50,000 is way above 2,000. Can you answer the question and explain how this satisfies the laminar conditions?
- A particle of 2 mm in diameter and density of 2500 kg/m3 issettling in a stagnant fluid in the Stokes’ flow regime.a) Calculate the viscosity of the fluid if the fluid density is 1000kg/m3 and the particle falls at a terminal velocity of 4 mm/s.b) What is the drag force on the particle at these conditions?c) What is the particle drag coefficient at these conditions?d) What is the particle acceleration at these conditions?Consider the visualization of flow over a 12° cone. Are we seeing streamlines, streaklines, pathlines, or timelines? Explain. Visualization of flow over a 12° cone at a 16° angle of attack at a Reynolds number of 15,000. The visualization is produced by colored fluid injected into water from ports in the bodyAn algae with solid and water densities of 2600 and 1000 kg m-3, respectively, is pumped into a batch vessel 5 m high and left for 30 minutes prior to discharge. The viscosity of the water is 0.001 kg m-1 s-1. Calculate the maximum particle diameter that will be still in the discharge. Assume spherical particles and no mutual interactions between single particles or wall effects. Stokes law applies. .
- Discuss why fluid density has negligible influence on the aerodynamic drag on a particle moving in the creeping flow regime.Q. What is meant by the term “velocity of circulation” and explain its relevance in the quantity equation.Explain the 'flow separation phenomena' for flow over a cylinder in cross flow. Can flow separation occur over a flat plate.
- Provide an example list of Laminar and Turbulent Flow.Outside an inner, intense-activity circle of radius R , a tropicalstorm can be simulated by a polar-coordinate velocitypotential ϕ ( r , θ ) = U o R θ , where U o is the wind velocity atradius R . ( a ) Determine the velocity components outsider = R . ( b ) If, at R = 25 mi, the velocity is 100 mi/h and thepressure 99 kPa, calculate the velocity and pressure atr =100 mi.Before cooking dinner, I pour oil into the center of a frying pan at a rate of 10^-6 m^3 /s. Once it hits the pan, the oil flows outwards from the center in a 2mm-thick layer, forming a perfectly circular disc. Assume the oil velocity is purely radial in this thin layer, and it is uniform in the vertical direction. a. What is the oil velocity 5 cm from the center? b. What is the oil velocity 10 cm from the center? ***Ps. if you can just guide me through the concept and pointing out which equation to use please***