Recent content by docfreezzzz

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    Testing - Need advice on what to do about exams

    Adjunct professor (PhD candidate) here. Definitely go to the doctor and get a psych evaluation. In the US the Office of Student Disabilities is REQUIRED BY LAW to assist you in taking exams by giving extra time or proctoring in a location away from distractions. I have done this for several...
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    Biggest differences between aerospace and mechanical engineering?

    I'd have to say that, in general, the subject matter overlaps quite heavily. Aerospace engineers tend to be a bit more specialized and IMO that should be better left to graduate school if you intend on pursuing a graduate education. It's my experience that the ME degree gives you better...
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    MATLAB Cartesian Mesh Engine: Sources for 3D FEM in Matlab

    http://www.cfdengineer.com/links/softwarelinks.shtml There is some good analysis software linked there. In particular at the bottom of the page. I've used both with reasonable results. If you want a professional solution then I would suggest GridGen or Pointwise.
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    R&D work without PhD-is it possible?

    I would say that it is definitely possible to get a job doing R&D without a Ph.D. However, at least in the US, most jobs require a minimum of an M.S. to do "real" design work. I'd say that at the minimum you do need a graduate degree in the engineering world. Also, as you said, most jobs...
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    New Adjunct Math Professor at Community College

    I don't want to paste the whole post here but I wrote about my recent experience as a new professor in Vector Statics and I think that some of my comments may help you. In particular, what to expect from the students. I hope that it will be a pleasant experience for you but be aware that at...
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    Using Shipping containers as compressed air 'Batteries

    I would have to disagree with you. The process is just compressing the air, which would normally be done in a gas turbine cycle anyway, a priori. There are some pumping losses involved with storage but the process itself is quite efficient. The required work is just done in discrete stages...
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    Undergrad How to get water in air tight container w/ other specifics

    A backflow preventer is a commercial solution and they are designed to do just this. Basically, the idea is that by passing the water through an expansion valve, you create a pressure drop which will not allow fluid/air to pass back into the line. These are available for relatively cheap in a...
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    Using Shipping containers as compressed air 'Batteries

    This is a great idea! In fact, compressed air storage is already performed at several large utilities but only in a slightly different manner. Excess energy is used to compress air into salt domes buried deep in the Earth during off-peak hours. When extra power generation capacity is needed...
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    Can this be done with a heat exchanger?

    If the temperatures of the fluid were drastically different it would be possible for different flowrates to give identical drops in temperature as specific heat is temperature variant. However, in this case the temperatures are so close that specific heat is in effect constant. ---------------...
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    Calculating Heat Loss from a Heat Exchanger

    If you can measure the inlet and outlet temperature of the steam you can predict the total heat transfer to the cold water side by looking at the total states on a T-h diagram for steam. I'm assuming that you are using saturated steam (as is common in industry). This is as simple as finding...