Prismatic tank, Mechanical Engineering

Assignment Help:

The tank can be modelled from first principles with the provision of certain assumptions. For the sake of simplicity, it is possible to consider the top section of the tank with parallel sides and then extend this model to deal with the whole tank. The prismatic section of the tank can be considered to be a simple rectangular tank with an inflow Q and an outflow, QL as in Figure. By considering conservation of matter, we can say that the flow into the tank must be equal to the flow out plus the flow converted into a change in level.

1849_Prismatic tank.png

Figure Prismatic tank


but if then

1914_Prismatic tank1.png

So this is a 1st order model for the tank.

The tapered section can be dealt with in much the same way, with the understanding that the cross sectional area A is now varying and dependant on the level h. If we are interested in a particular operating point in the 'V' section, we could assume that the tank had vertical sides at this operating point. This would be OK provided we did not move too far from this operating condition. In other words, small changes in h would produce small changes in A, which our controller may be able to cope with. This is not very practical, as any significant disturbance would make the system go unstable.


Related Discussions:- Prismatic tank

Determine optimal sequence plan, a) What do ypu understand by production Pl...

a) What do ypu understand by production Planning and Control Function. Briefly mention the objective of PPC. b) There are 8 job in an auxiliary unit requiring processing on mach

Total tension in cable of the elevator, Total tension in cable of the eleva...

Total tension in cable of the elevator: An elevator having weight 5000N is ascending with an acceleration of 3m/sec 2 . During this ascent its operator which is having weig

Cad-cam data exchange, CAD-CAM Data Exchange: The interface SET transf...

CAD-CAM Data Exchange: The interface SET transferred information on wire-frames, surfaces, B-representation and FEM models as well as technical drawings and scientific data. I

Difference between intrinsic and extrinsic semiconductors, Question: (a...

Question: (a) (i) Describe the difference between intrinsic and extrinsic semiconductors. (ii)Is it possible for compound semiconductors to exhibit intrinsic behaviour? Desc

Manufacturing Technology, b) Differentiate between Hot and Cold working pro...

b) Differentiate between Hot and Cold working process. What are their advantages and disadvantages? Illustrate with examples.

Classification of steam engine , CLASSIFIC A TIO N: (1 )  In acco...

CLASSIFIC A TIO N: (1 )  In accordance to Cylinder Axis: Engine can be vertical or horizontal. (2 )  In accordance to action of steam: Can be single acting or doub

What do you mean by machinibility, (a) What do you mean by machinibility ? ...

(a) What do you mean by machinibility ? Discuss the factors which come into play while evaluating the machinability of any metal. Also describe machinability index. (b) Brass co

Explain the procedure of removal for valves, (a) Explain the procedure of r...

(a) Explain the procedure of removal for valves. (b) How should one remove valve guide from cylinder head? (c) What is the use of piston side base? (d) What is the use of

Dynamics of the water tank, A Perspex tank ure 1), which has parallel sides...

A Perspex tank ure 1), which has parallel sides for the top part of its height and a 'V' shaped section for the bottom part and a constant width throughout, is used as a receptacle

calculate the arc-belt length-distance and ratio , A powered metal-working...

A powered metal-working crank press (a generic press is shown at the end) has been designed to be capable of punching blanks from mild steel sheet up to 3 mm thick. 1. the ultim

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd