Aerodynamics Archives - Page 8 of 12

Worldtech
Consider a flow field in polar coordinates, where the stream function is given as $ψ = ψ(r, θ)$ . Starting with the concept of mass flow between two streamlines, derive Equations $\rho V_{r}=\frac{1}{r}\frac{\partial \bar{\psi }}{\partial \theta}$ and $\rho V_{\theta}=-\frac{\partial\bar{\psi} }{\partial r}$ .
- fluids
on 30th October 2019 in Aerodynamics.
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techAir
Consider a length of pipe bent into a U-shape. The inside diameter of the pipe is $0.5\;m$ . Air enters one leg of the pipe at a mean velocity of $100\; m/s$ and exits the other leg at the same magnitude of velocity, but moving in the opposite direction. Calculate the magnitude and direction of the force exerted on the pipe by the airflow.
- fluids
on 29th October 2019 in Aerodynamics.
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Worldtech
Consider a velocity field where the radial and tangential components of velocity are Vr = 0 and Vθ = cr, respectively, where c is a constant. Is the flow field irrotational? Prove your answer.
- irrotational flow
on 29th October 2019 in Aerodynamics.
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techAir
For vortex flow, calculate: (a). The time rate of change of the volume of a fluid element per unit volume. (b). The vorticity.
- vortex flow
on 27th October 2019 in Aerodynamics.
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Worldtech
For source flow, calculate, the time rate of change of the volume of a fluid element per unit volume and the vorticity.
- source flow
on 27th October 2019 in Aerodynamics.
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techAir
Consider a velocity field where the $x$ and $y$ components of velocity are given by $u = cx$ and $v = −cy$ , where $c$ is a constant. Obtain the equations of the streamlines.
- streamlines
on 27th October 2019 in Aerodynamics.
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Worldtech
Consider a velocity field where the radial and tangential components of velocity are $V_{r} = 0$ and $V_{θ} = cr$ , respectively, where $c$ is a constant. Obtain the equations of the streamlines.
- streamlines
on 26th October 2019 in Aerodynamics.
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techAir
Consider a velocity field where the $x$ and $y$ components of velocity are given by $u = cy/(x^{2} + y^{2})$ and $v = −cx/(x^{2 }+ y^{2})$ , where $c$ is a constant. Obtain the equations of the streamlines.
- streamlines
on 26th October 2019 in Aerodynamics.
- 2K
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techAir
Consider a velocity field where the $x$ and $y$ components of velocity are given by $u = cx/(x^{2} + y^{2})$ and $v = cy/(x^{2} + y^{2})$ where $c$ is a constant. Obtain the equations of the streamlines.
- streamlines
on 26th October 2019 in Aerodynamics.
- 1K
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Kisan Kumar
Consider a steady two-dimensional zero pressure gradient laminar flow of air over a flat plate as shown below. Find the ratio of displacement thickness to momentum thickness of the boundary layer at a distance of 2m from the leading edge.
- GATE
on 15th October 2019 in Aerodynamics.
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