fluid mechanics for chemical engineers solution manual free download

fluid mechanics for chemical engineers solution manual free download

Fully residential and one of the most beautiful anywhere, Kenyon's hilltop campus boasts buildings, a acre environmental center, hiking trails, and woods, all bordered by the Kokosing, one of Ohio's scenic rivers.

Kenyon is thankful for the thousands of alumni and parents who have already supported the College this year. Mind of a Writer A senior English major talks with her advisor about his philosophy on creative writing and teaching. Answer: The System is the grease between the plates. Related Papers. Chemical Engineering Fluid Mechanics By JOhn Smith. By Shivam sharma. Darby R. Chemical Engineering Fluid Mech. By Tysir Sarhan. A senior English major talks with her advisor about his philosophy on creative writing and teaching.

Professor of Anthropology Bruce Hardy makes headlines for his study on the cognitive abilities of Neanderthals. A science-writing initiative will empower Kenyon students to artfully articulate important scientific topics. No Downloads. Views Total views. Actions Shares. Embeds 0 No embeds. No notes for slide. Fluid Mechanics for Chemical Engineers, 3rd Edition 1. Many of those are discussion problems; I have tried to present enough guidance so that the instructor can lead a useful discussion of those problems.

In addition I have added discussion material to many of the computation problems. I regularly assign these as computation, and then after we have agreed that the computation is correct, asked the students what this computation tells them.

That leads to discussion. Wherever I can, I begin a discussion of some topic with a computation problem which introduces the students to the magnitudes of various quantities, and thus requires them to read the part of the text covering that topic. Once we all know the magnitudes, and have all read that section of the text, we can have an interesting discussion of their meaning.

In this additional discussion I have presented reference when I could. Often I relied on industry "common knowledge", folklore and gossip. I hope I got it all right. If not, I apologize for leading you astray. Where I am not sure about the folklore, I have tried to make that clear in the discussion. Many of these problems have been class tested. Some, alas, have not. This manual, as well as the book, is certain to contain errors.

I will be grateful to those who point these errors out to me, so that they can be corrected. I keep a running correction sheet, and send copies to anyone who asks for it. FAX Many of the problems go beyond what is in the text, or show derivations which I have left out of the text to make it read easier.

I suggest that the instructor tell the students to at least read all the problems, so that they will know what is contained there. Some of the problems use spreadsheets. In the individual chapters I have copied the spreadsheet solutions into the text in table format.

That is easy to see, but does not let the reader modify the spreadsheets. In the Folder labeled "Spreadsheets" I have included copies of all the spreadsheets shown in the individual chapters, and also the high velocity gas tables from the appendices. These are in Excel 4. Laws Not Used, third law of thermodynamics, all electrostatic and magnetic laws, all laws discussing the behavior of matter at the atomic or subatomic level, all relativistic laws.

The densities of other liquids with low values are: liquid methane at its nbp, 0. Discussion; the point of this problem is for the students to recognize that one of the principal differences between liquids and gases is the large difference in density.

As a rule of thumb, the density of liquids is times that of gases. Discussion; this assumes no volume change on mixing. That is a good assumption here, and in many other cases. This is normally ignored, but in the most careful work it must be considered.

That matches the price structure for oil, where lower density crude oils have a higher selling price, because they are more easily converted to high-priced products e. The plot covers the whole range of petroleum liquids, from propane s. Water s. For methane and propane the values are and Propane is by far the most dangerous fuel in common use.

If we have a methane leak, buoyancy will take it up and disperse it. If we have a leak of any liquid fuel, it will flow downhill on the ground, and be stopped by any ditch or other low spot.

Propane, as a gas heavier than air, flows downhill, over small obstructions and depressions. It often finds an ignition source, which methane or gasoline would not find in the same situation. Inks; spread when you are writing, don't leak when you are not.

Let's Change The World Together. Pdfdrive:hope Give books away. It often finds an ignition source, which methane or gasoline would not find in the same situation. Inks; spread when you are writing, don't leak when you are not. Lipstick; spread when applied, then not move. Crayons; same as lipstick. Blood; corpuscles don't settle, viscous resistance is small in large arteries and veins.

Chocolate; easy to spray on warm or apply by dipping, then does not run off until it cools. Oil well drilling fluids; low viscosity when pumped up and down the well, high viscosity when leaking out of the well into porous formations. Radiator sealants; low viscosity in pumped coolant, high viscosity in potential leaks.

Aircraft de-icing fluids; stick to the plane at low speeds, flow off at high speeds. Plaster, spread easily, not run once applied while it is setting. Margarine, spread easily, but remain solid when not being spread. Thus for equal volumes the sphere has the least surface, the right cylinder the next least, and the cube the most. For the earth there is no such well-defined acceleration of gravity. For the past half century this number has remained about constant, we have found it at about the rate we used it.

In the past few years this has mostly been by improved recovery methods for existing fields, rather than finding new fields. In the 's the US could produce about twice as much oil as it consumed; now we can produce about half. This is mostly not due to a decline in production, but an increase in consumption.

No one has seriously proposed this, but it makes as much sense as the slug and the poundal. Multiplying that by the acres to be irrigated gives the water demand. The south western states look to the Columbia with envy; the Northwestern states are in no hurry to give it up. So this terminology is wrong. But it is in very common usage. If they are different the common case then this value must be modified. However European rocket engineers use the "effective exhaust velocity" which takes the pressure into account the same way US engineers use the specific impulse.

Clearly the bar is a convenient approximate atmosphere. It is very commonly used in high pressure work, as an approximate atmosphere. Meteorologists express all pressures in millibar. Currently thermodynamic tables like steam tables and chemical thermodynamic tables show pressure in bars.

The most common type of pressure gage testers, the dead-weight tester, balances a weight against the pressure in the gages. I think this is slowly losing out to the kPa, but it is not gone yet. Older computers and some hand calculators do not carry enough digits to solve this problem as shown above. One can also discuss why it hurts. So a pressure difference of about 5 psi across the eardrums is painful. Scuba divers have the same air pressure inside their lungs as that of the outside water. The air valve that does that automatically, invented by Jaques Costeau, made scuba diving possible.

People who dive deeply wearing a face mask must equalize the pressure in their lungs with that in the face mask, or the blood vessels in their eyes will burst. This is a problem for deep free divers.

Furthermore, one cannot tolerate such a high pressure in the drinking fountains on the ground floor; they would put out people's eyes. Tall buildings have several zones in their internal water system, with suitable pressures in each, and storage tanks at the top of each zone.

High-pressure drilling fluid is pumped down the drill pipe, and flows back up the annulus between the drill pipe and the wellbore. This drilling fluid cools the drill bit and carries the rock chips up out of the well. Ask the students how one would get such dense drilling fluids?

The answer is to use slurries of barite, barium sulfate s. In extreme cases powdered lead, s. The great hazard is that high pressure gas will enter the drilling fluid, expand, lower its density, and cause it all to be blown out. Most deep drilling rigs have mechanical "blowout presenters", which can clamp down on the drill stem and stop the flow in such an emergency.

Even so one of the most common and deadly drilling accidents is the blowout, caused by drilling into an unexpected zone of high-pressure gas. If the gas is rich in H2S, the rig workers are often unable to escape the toxic cloud. Depth, ft 20 40 6. The result is exactly one-half of that result, or 2. An internal pressure blows the vessel up like a balloon, straightening out any non-uniformities.

An internal vacuum collapses the tank, starting at a non-uniformity and magnifying it. Most students have see the demonstration in which a rectangular 5 gallon can is filled with steam and then collapsed by cooling to condense the steam.

The maximum vacuum there is An internal pressure of the same amount will cause the sides and top of the can to bulge out somewhat, but the result is far less damaging than the vacuum collapse. You might suggest the analogy of pulling and pushing a rope. If you pull a rope, it straightens out. If you push one the kinks are increased and it folds up. Then one constructs the ratio of the two pressures, and uses the spreadsheet's root finding engine to find the value of h3, which makes that ratio 1.

Before we had spreadsheets we could have done the same by manual trial and error, or done it analytically. One may do a simple plausibility check on this mathematics by computing the ratio of the density at half of the depth to the surface density. Using the data here, the density at a pressure of psi is about 1. For the depths of ordinary industrial equipment this ratio is almost exactly 1. The fact that the atmosphere extends above this height shows that there is heat transfer in the atmosphere, which contradicts the adiabatic assumption.

At this elevation the predicted pressure from equation 2. Discussion: you might ask the students about the barometric pressures, which are regularly reported on the radio for places not at sea level. These are normally "corrected to sea level" so that, for example in Salt Lake City the reported barometric pressures are normally about Those values are used to set altimeters in airplanes, which have a dial-in for the sea level barometric pressure, which they compare to the observed pressure to compute the altitude.

A small pressure, acting over a modest area can produce an impressive force. The small air compressor in the service station easily lifts the heavy car, fairly rapidly. You can ask the students whether this is psig or psia. You can also ask them about buoyancy.

Is the piston a floating body? Answer; not in the common sense of that term. If you look into Archimedes principle for floating bodies, there is an unstated assumption that the top of the floating body is exposed to the same atmospheric pressure as the fluid is.

Here for a confined fluid that is clearly not the case. If an immersed body is in a confined fluid that assumption plays no role, and the buoyant force, computed by Archimedes' principle is independent of the external pressure applied to the fluid.

There, at 60 ft, the required thickness was 0. The required thickness for the assumptions in the problem is proportional to the gauge pressure at the bottom of each band of plates, which is proportional to the depth, a The values are Depth, ft Pressure, psig Design, t, in 60 It is not asked for in the problem, but the same industry source who gave me these values also told me that the maximum used is 1. However in the middle column the lowest value, 0.

The rightmost column shows the average thickness of the tapered plate except for the lowest entry, which is not tapered. So, for example, the lowest plate is 0. Thus the tapered plates reduce the weight of the plates, for equal safety factor, to 0. The same industry source who gave me the other values in the problem also told me that the tapered plate solution is quite rare. It is apparently only done when there is an order for a substantial number of very large tanks all of one size.

So it is not simply the cost of the metal, but the cost per unit stored of erection, foundations, piping, etc. I thank Mr. Terry Gallagher of CBI who spent a few minutes on the phone and shared his insights on this problem. Compare this to Example 2. He said that they stress-relieved this tank, in the field, after it was complete, by building an insulating tent around it, and heating to a stress relieving temperature.

That costs, but the economics of having this big a tank apparently made it worthwhile. For spherical tanks he and I think that the difficulties of erection become too much as the size goes over about 80 ft. I have seen an advertisement for Hyundai, showing one of their liquid natural gas tankers, which had some huge spherical tanks in it.

LNG is transported at a low enough temperature that one must use expensive alloy steels, so the cost of those spherical tanks must have been justified. The diameter may be set by the largest diameter hemispherical heads which steel mills will regularly produce.

The heads are one-piece, hot pressed, I think.

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