Recent content by edgepflow

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    Aspiring to get an M.S. in Chemical Engineering

    Have a look at the websites of some chemical engineering programs you are interested in. They usually have a list of "deficiency courses" for graduates with degrees in other majors that need to be completed to study for and earn a masters degree in chemical engineering. With your background...
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    Expansion rate of Carbon Fiber vs Steel

    Yes, you could figure this out with the coefficients of thermal expansion of both materials: Net Growth = (coeff exp metal - coeff exp carbon fiber) X Temperature Difference X Original Length The temperature difference would be the maximum or minimum temperature in the area minus the...
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    Thinking about applying for an internship

    Maybe write your degree as: Engineering & Physics Dual Degree And you should basically just list 2015 as your graduation date but mention physics degree requirements will be completed in Spring 2013.
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    Calculate the Sound intensity level

    Welcome to PF. If you inspect your formula, you will notice that you need to find I. The definition of I is power per unit area: I = P / A. Assume the jackjammer is a point source. Then A will be the surface area of a sphere. You are given the power. Try this and show your work !
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    Air flow in inlet manifold affecting engine performance

    There are several important things to consider in modelling the intake manifold: a) Inlet vacuum that depends on the flow rate and throttle body size. b) Wave pulse dynamics that depend mostly on runner length. In a very simplified sense, you can see this behavior in the Hemholtz...
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    Calculating Power from Acceleration

    Welcome to PF. Yes, when you have acceleration instrumentation, you can figure out all kinds of usefull parameters. Your power is basically as you have shown: Power = mass X acceleration X velocity Lets plug in some reasonable numbers: Power = 1500 kg X (9.8/2) m / s^2 X 18 m/s =...
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    Working in all engineering fields

    You can work in many areas of structural engineering with an ME degree. However, piping and pressure vessel codes traditionally fall under mechanical engineering and structural codes are part of building codes, which fall under civil engineering.
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    What is the current value of the scale factor?

    Yeah, the scale factor is traditionally set to unity at the current time. In other words, a(t=2011 A.D.) = 1. Then you can apply the cosmology of your choice (e.g. flat universe with cosmological constant) and answer questions such as how old was the universe when things were 1000 times closer...
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    Mechanical System for Lifting and Lowering Weight

    OK, here are a few starters: Compute the motor shaft power: Power = weight * g * vel weight = 150 lb g = acceleration due to gravity 9.81 m//s^2 vel = velocity = 6 inch / sec watch your units. Now if you put a pulley of radius rp on the shaft, the angular speed is: angular...
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    What factors determine the maximum power of a 4-stroke engine per cylinder?

    The 3456 number is a constant "conversion factor" to make all the units work. And the book value can also be considered constant although bsfc for gasoline is a measured parameter and you will see some variation in the published values.
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    What factors determine the maximum power of a 4-stroke engine per cylinder?

    OK, here is a simple approach for rough estimating. Actual engine power is based on many more variables that this method does not account for. Lets try this for the new Boss 302 Mustang rated at 444 hp at 7400 rpm. Compute the air flow rate at peak horsepower: CFM = (VE)(CID)(RPM) /...
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    Electric Blanket for a flow rig

    I would recommend fiberglas or mineral wool. If you need something with some structural strength you can use calcium silicate.
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    What factors determine the maximum power of a 4-stroke engine per cylinder?

    Yes, you can figure from brake specific fuel consumption, displacement, and volumetric efficiency. I have a book I will try to find and get back to you...
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    Fluid Dynamics of saltwater in sealed tank

    Guage pressure is, of course, pressure above atmospheric pressure. And the "small hole" is at atmospheric pressure. Whence, P1 - P2 = 2.9 atm. And since the problem says the outlet is a small hole, it is reasonable to assume: V1 ≈ 0.
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    What is the Gravity GPM for a 1 pipe and 83 gal. fuel transfer tank?

    Welcome to PF. These formulas are good for estimating. http://www.lmnoeng.com/Tank/TankTime.htm Use a "full port" ball valve rather than a "standard port" for improved flow. Try C = 0.5 in the formulas. I have these (with some enhancements) programmed at work in MathCAD. Let me...
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