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

Steering is heavy motorcycle problem, If Steering is Heavy ...

If Steering is Heavy Causes of Problem Remedy Steering head adjuster too tight Damaged steering cones or steel ball

Compute position and magnitude of the resultant force, Compute the position...

Compute the position and magnitude of the resultant force acting on the framework shown below. What is the moment of the force system ?

Evaluate the temperature gradient in the flow direction, A plane wall (ther...

A plane wall (thermal conductivity = 10.2 w/m o c) of 100 mm thickness and area 3m 2 has steady surface temperature of 170 o c and 100 o c. Evaluate :- (i) The temperature

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

Describe inverse reflection, Objective type/ short-answer type questions. ...

Objective type/ short-answer type questions. Describe the following :- a. Illustrate what do you mean by CAD/ CAM b. Discuss the storage device used in computer. c. Wha

Describe inversion and mechanism, Describe Inversion and Mechanism. Illustr...

Describe Inversion and Mechanism. Illustrate in detail all inversions of 4-Bar chain Mechanism. (a) Explain all the types of constrained motion with examples. (b) Explain in

Deteremine the birth of iges, Normal 0 false false false ...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Cover left crank case and check shifter drum, Open cover left crank case an...

Open cover left crank case and check shifter drum bolt and washer: Check shifter drum bolt torque and washer direction and avail ability.

Actual vapour compression cycle, diffrence between actual and idealactual v...

diffrence between actual and idealactual vapour compression cycle

Torque carried by the hollow shaft, Torque carried by the hollow shaft: ...

Torque carried by the hollow shaft: A hollow and a solid shaft of similar material have the same weight when the inner diameter of the hollow shaft is half its outer diameter.

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