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  1. Jfoland

    Manipulating IE from Excel Visual BASIC Macro

    How can I manipulate oblects in Internet Explorer from Excel Visual Basic. Specifically, there is a pulldown box on a web page that I need to change, before doing an external Data import into EXCEL. Any Ideas? -Jeremy Foland
  2. Jfoland

    What is the use of an Arrhenius plot?

    The arrhenious plot allows you to determine the time and temperature relationship of a process. Is there something specific you are trying to understand? It's kind of asking, "What's the use of multiplying two numbers?"
  3. Jfoland

    flowrates of 1 input 5 output system as a function of pipe diameter.

    Ever the pragmatist, just to be sure, I drilled two holes in the bottom of a 1 gallon bottle. 1 was 3/8 the other around 1/8 or so. When I filled the bottle up, the trajectories of the water streams were the same. I'm satisfied now. Thanks for the help, folks.
  4. Jfoland

    flowrates of 1 input 5 output system as a function of pipe diameter.

    Now that I think about it... You're right. The continuity equation applies for the hose because it's a restriction of an existing pipe flow. Why does it not apply to a Draining tank?
  5. Jfoland

    flowrates of 1 input 5 output system as a function of pipe diameter.

    Ok, I think I've got it now. Thanks ve7brz for the websote you suggested. Using Bernoulli's law r = Density g = Gravitational Constant z = head P = Pressure v = velocity rgz + Pin + 1/2rVline^2 = rgz+Patm+1/2rV1^2 ^Negl ^I'll say buffer tank is stagnant and drops Pin = rgz +...
  6. Jfoland

    flowrates of 1 input 5 output system as a function of pipe diameter.

    Fortunately in my case, I can be certain that I have a constant pressure source. There is no pump, and the fluid is driven by a nitrogen line on the backside of a buffer tank, and can be considered very stable. Thanks everyone for all of the help. I've reccomended this site to several of my...
  7. Jfoland

    flowrates of 1 input 5 output system as a function of pipe diameter.

    rbcoulter, Could you please give me the complete title and publisher of that Crane's Handbook. I searched Google and just got a handbook about Cranes (Construction machinery :) )
  8. Jfoland

    flowrates of 1 input 5 output system as a function of pipe diameter.

    rbcoulter, Sorry, all. Even though by diploma I am a Chemical Engineer, I'm currently employed in the Electrical field, so I think like an Electrical Engineer (..Gasp!) You know, I think you are right. The Constant Pressure source is like a constant voltage source, where a constant flowrate...
  9. Jfoland

    flowrates of 1 input 5 output system as a function of pipe diameter.

    By that method there is no interplay between the flows. I think that this system has to be treated like a series of parallel resistors. If I constrict one hole, the flows through the other holes will increase. I found a formula for Equivalent pipe resistance, but the variables aren't explained...
  10. Jfoland

    flowrates of 1 input 5 output system as a function of pipe diameter.

    I am trying to model a spray nozzle. There is 1 pressureized stream in of which I know the volumetric flowrate, and 5 streams out to atmosphere of varying Cross sectinal areas. I need to know the velocities and flowrates of each outlet stream. The fluid is essentially water...

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