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Calculating air velocity within an oven - Forno Bravo Forum: The Wood-Fired Oven Community

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Forno Bravo Forum Community,

You will notice a new forum at the top of the main page called, "Ask Me Anything". This forum will be used for live one hour "Ask Me Anything" (AMA) sessions hosted by people who are knowledgeable in different areas pertaining to wood fired ovens. How it works:
- Each AMA will have a "sticky" thread where the community can post questions they would like answered during the live session. This will allow everyone to participate even if you can't be online for the live session. These questions will not be answered by the host until the live AMA; if you need an answer quickly, you should post it in the appropriate Forum area for the community to respond.
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To kick off our AMA feature, we have invited author, chef and master bread maker and host of Pizza Quest, Peter Reinhart, to be our first host! Peter will be in the Forum on Monday, February 15th, from 7:00 - 8:00 pm EST. If you are unable to be online during the live session, you can post your questions in the sticky post. Peter will answer those questions during the live session on February 15th. You can view Peter's answers to your questions as well as what happened during the live session in the session thread.

We hope you enjoy this new feature! Please let us know if there is a topic that you'd like to have as an AMA and we'll look for a host!

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Calculating air velocity within an oven

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  • Calculating air velocity within an oven

    Does anyone happen to know how a person can calculate the velocity of airflow within an oven? From what I understand several variables would be needed such as external temp, and the length/width of the stack, etc..

    I've got a friend of mine that can build a virtual model in CAD so simulate air flow, but I need to understand the velocity in inches per second that air would be moving out of the heat source.

    My apologies if my information is incomplete.. I'm trying to figure out how to get started with some kind of algorithm. Any pointers appreciated.

    Thanks

    Eric

  • #2
    Re: Calculating air velocity within an oven

    The question is not quite like asking how to design the cooling systems for a nuclear reactor, but the difficulties would be along the same lines. Kind of like if you have to ask, ?!

    Comment


    • #3
      Re: Calculating air velocity within an oven

      Are you an engineering student trying to use this forum as your cheat sheet? Shame on you, this forum is dedicated for those in pursuit of a functioning WFO.

      Comment


      • #4
        Re: Calculating air velocity within an oven

        Originally posted by tailbiter View Post
        Does anyone happen to know how a person can calculate the velocity of airflow within an oven?
        Why?
        Although it is ignorant of the air velocity my food cooks very well.
        The English language was invented by people who couldnt spell.

        My Build.

        Books.

        Comment


        • #5
          Re: Calculating air velocity within an oven

          Hey Al, Get your head out of your oven its impeding the velocity of airflow over that pizza!

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          • #6
            Re: Calculating air velocity within an oven

            I dabble in CFD enough that I can tell you without an accurately simulated fire your airflow results will be meaningless.

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            • #7
              Re: Calculating air velocity within an oven

              I am a seasoned aerodynamicist (i.e. Im getting old), and I can tell you that that there are too many variables involved in the combustion process and that the flow is too hugely complex to conclude anything that is meaningful. CFD is a great tool only if you have meaningful input. Otherwise, garbage-in = garbage-out.

              My advice....download the FB plans and start laying bricks...soon you will be eating delicious pizzas and you wont care about the flow velocity anymore.

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