Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations KootK on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Recent content by Jfoland

  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...

Part and Inventory Search