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can you give me some hydrodynamic problems (physics) for me to solve?

2007-10-11 02:41:37 · 2 answers · asked by narcoleptic alky 1 in Science & Mathematics Physics

2 answers

What kind of hydrodynamic problems are you interested in? There are many possibilities, including:

- flow of various materials through pipes
- flow of water in open channels
- drag of objects in fluids
- laminar vs. turbulent flow
- wave behavior

with many texts and much research written on each.

So, some samples (add the specific parameters to suit):

Flow Through a Pipe

* determine the pressure needed to get a specified flow rate of a specified material (water, oil, molasses, etc.) through a horizontal pipe of specified length, diameter, and internal roughness; compute the associated Reynolds number along the length. Add a height difference along the length of the pipe

* given the need for laminar flow (i.e. Reynolds number <= 2000), determine the pipe size for a specified flow rate, through a horizontal pipe of specified length and internal roughness.

* assuming valves with no friction when they are open, realistic pipe behavior, etc. design a hydraulic ram system delivering a specified water flow a specified height above the water source, where the ram is a specified height below the source. Assume any horizontal runs are frictionless.

* Given a water tank which is an upright cylinder of radius R. Given the height of the water is initially H. How fast does it take to get (almost) all the water out of a circular opening in the bottom with area A? Answer for both an optimal nozzle and simple hole.

Flow Through Open Channels

* Assuming zero evaporation, design an aqueduct that would get a specified flow of water over a specified horizontal distance. Keep the flow laminar; the slope constant; and the cross section approximately square (semi-circle, etc. is fine).

* Now assume that the natural slope of the land from the start to the half-way point is twice what was calculated above. Adjust the design to accommodate.

Drag of Objects

* Given a spherical submarine of specified volume, how much power would be needed to propel it through the sea at various velocities? What about the same volume in a more cylindrical shape? Assuming a shell of specified smoothness, determine the optimum shape for various volumes, speeds, and depths. (i.e. balance off the drag to wetted surface and cross-sectional area)

* Given a ball of density D and radius R, with specified smoothness, determine the terminal velocity when let go at the surface of the ocean. Take into account the transition from laminar to turbulent flow as needed and as feasible.

2007-10-13 19:39:41 · answer #1 · answered by simplicitus 7 · 0 0

You get the attitude by utilizing the Cos Inverse of (a million.5 / 2.5) it is fifty 3.13 tiers so if we are saying that the river is flowing to the right the swimmer might want to oppose the flow so he will swim in 143.13 tiers his speed will be (Sin fifty 3.13) * 2.5 it is two mph so if its a 1/2 mile huge river he receives to the different aspect in quarter-hour question me for extra factors :)

2016-10-20 06:40:45 · answer #2 · answered by ? 4 · 0 0

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