Recent content by Bcavender

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    Navigating the Tensions in Ukraine: A Scientific Perspective

    My Mother, long departed, told me once that if someone has a real problem with you, take a moment to walk a mile in their shoes to find what truly is inside their head. If you find their situation irrational, that is one set of circumstances to deal with. If you find that you wouldn't like to...
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    Cylindrical Permeability Problem: Help on how to set up

    Ah, Rock Stars! Very cool! Seems that I read somewhere about a deep disposal well in KY that DuPont was working on and eventually completed the work. Might that have been the same? ————- Ultimately, I need to move expeditiously to develop an equation that represents the dependent radial...
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    Cylindrical Permeability Problem: Help on how to set up

    The R.E. Collins book carries a specific double cylinder permeability derivation that looks spot on. (Hat tip to Baluncore for the connection!) After a first read through, I will have to back up two sections to get the context and variable definitions to try to gel the equations down to a...
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    Cylindrical Permeability Problem: Help on how to set up

    Chester, Thank you for your reply. I had not heard of this, but searched it down. It looks quite analogous in that Theis storativity and transmissivity parallel porosity and permeability that appear more commonly in Oil&Gas analyses, but the work appears to only target incompressible...
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    Cylindrical Permeability Problem: Help on how to set up

    I was asked to give an estimate for a three dimensional permeate problem and I need an assist in how to setup a model equation. Picture a 6" underground cylindrical bore. The depth of the cylindrical bore is 150 feet. The bore is sealed at the bottom and the permeability below the bore bottom...
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    Chemistry Computation of Liquid/Vapor Result during a Volume Expansion

    OK, let's see if this is progress. For a given amount of volume expansion, a new liquid/gas equilibrium point would be where the amount of vapor moles produced would allow the pressure in the gas volume to grow to equal the vapor pressure of the remaining liquid given compensation for by the...
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    Chemistry Computation of Liquid/Vapor Result during a Volume Expansion

    Density = 0.99802 g/cm^3 Starting Volume = 500 cm^3 (all liquid) Molar mass = 18.01528 g/mol Total Mass = 499.01/18.01528 = 27.7 mol Can you suggest a reference where I can find the methodology to understand the mechanics and computation of how much mass becomes vapor after expansion from 0.5L...
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    Chemistry Computation of Liquid/Vapor Result during a Volume Expansion

    Good afternoon Bystander, I am not sure what further constraints you speak of. My chemistry background is limited as I do mostly electrical/electronic work and I am exploring for a methodology for my super. Boyles Law may come into play some way partially or not, but I lack the understanding...
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    Chemistry Computation of Liquid/Vapor Result during a Volume Expansion

    I am searching for the appropriate methodology/equation(s) to step beyond Boyle's Law to account for the phase change and solve this problem. All suggestions/guidance is greatly appreciated! Bruce
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    Superconductivity at "ambient temperature"?

    I have a ME Entrepreneur friend that worked for Honeywell on the Moonshot (after a naval career serving on the Nautilus). Quite an accomplished fellow. We both arrived on this same wavelength recently about the endemic problem of increasing dollars spent and decreasing value returned over the...
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    Superconductivity at "ambient temperature"?

    No one on this planet wants to buy 14 gauge magnet wire with 10^-3 ohms per loop-mile more than this engineer. But I have to agree with Nik about extraordinary claims. (And, to be honest, "The Hindu" website is about science-cred-focused as Yahoo.) After nearly 50 years of keeping up with EE...
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    Superconductivity at "ambient temperature"?

    Getting this out of the lab and into wire production would revolutionize alternator/motor performance. The big question is ... are they on the level with real materials? Lots of research has besmirched the scientific community promising results are "only five years away".
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    Plastics not subject to viscoelasticity (cold flow)

    TomG & ChemAir, Both very good suggestions! I will research both. Thank you for your assist! Bruce
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    Plastics not subject to viscoelasticity (cold flow)

    JBA, Thank you for taking the time to link me with the Curbell website. Absolutely the best I have seen for broad comparisons and drill down detail! Greatly appreciated! Bruce
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    Plastics not subject to viscoelasticity (cold flow)

    I have been asked to find a machinable plastic (or dielectric) that will be subject to continuous loading (20 years) that will be subject to stress of appx 100 KPa at a max temp of 64C. While not a high speed or high energy situation, it is a rotating, close clearance application and the...
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