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Mentor Blogs

Posts tagged with 'FloVENT'

2 Feb, 2010

Robin Bornoff It might well be that a single U-value is quoted, in reality though that single value describes the ease by which heat can pass through various stages, from an ‘inside’, passing through a ‘wall/window’ and going to the ‘outside’. The resistance (inverse of the ease, resistance = 1/ease) the heat experiences as it passes from the inside air to the inner solid surface of the wall construction (and from … Read More

FloVENT, HVAC, Boundry Layer, Thermal Insulation, U-Value

27 Jan, 2010

Robin Bornoff We knapped our first flints about 2,000,000 years ago and started to shelter from the elements in caves and simple huts about 200,000 years ago. As industries go the building industry is probably the oldest, well maybe second oldest. Our ability to both adapt to and manipulate our surroundings has set us apart from the beasts on a path of science, art and technology. Over the coming weeks, months … Read More

Caveman, FloVENT, Building, HVAC

27 Jan, 2010

Robin Bornoff Computational Fluid Dynamics, CFD, is a simulation technology that provides 3D predictions of fluid flow and heat transfer for a modelled system. Be it an electronics enclosure or a building, insights into the often complex air flow patterns can help designers better understand the physical behaviour of their design. Communication of such insights helps others to appreciate the sometimes painful design … Read More

FloVENT, HVAC, FloViz, Free CFD Results Viewer

23 Jan, 2010

John Wilson I think that we can all agree that one feature of CFD over test is the ability to visualize where the flow is going.  It is quite easy in CFD analysis tools, at least in our tools, to seed the flow any where within the solution and follow particles upstream and/or downstream.  The limitation of this is that it is the results are qualitative.  CFD has the capability, without an extreme amount of extra … Read More

Flow Visualization, CFD, Concentration, Capture Index, FloVENT, Data Center

30 Nov, 2009

Nazita Saye I’ve already admitted my love of cheesy sci-fi movies. The thing that always amazed me was the fact that despite traveling thousands of light-years from Earth, the intrepid explorers were always able to communicate with all sorts of exotic looking aliens whom they’d never encountered before in what else but English!  Fantastic… if only real life was that easy. Sometimes briefing meetings remind me … Read More

Free, FloViz, Communicate, CFD, FloTHERM.PCB, FloVENT, Engineer

10 Oct, 2009

John Wilson Optimization has got to be the most overused word when it comes to my line of work.  If I had to take a guess I would say no more than 1 in 5 optimization claims are anything more than a design study.  It seems to have come to the point that if a person compares two analyses, and one is better, the claim is that it has been optimized.  As someone who scopes the work required for design services I have … Read More

Design of Experiments, DOE, CFD, RSO, FloVENT

6 Oct, 2009

Robin Bornoff Local air temperature plays an important part in the resulting thermal comfort as would be experienced by someone occupying that space; however it’s not the only contributing factor. “Comfort Temperature” is a measure that contains contributions from the local air temperature, the local air speed and also something called the mean radiant temperature. When comparing the effects of including, or omitting, … Read More

FloVENT, CFD

29 Sep, 2009

Robin Bornoff In the first part of this blog I described the make up of my house extension floor ’stack-up’, including a 100mm thermal insulation layer. Apart from increasing the cost and consturction complexity of the build, what thermal advantage does this bring? To determine that a common methodology is employed, compare with insulation thermal behaviour against wihout insulation and quantify the difference. First … Read More

FloVENT, CFD

17 Aug, 2009
Mechanical Analysis

It's a Struggle

Posted by Nazita Saye

Nazita Saye I work in an open office environment. There are about 20 of us in a big room and we have a problem. No … it is not noise. It is an airflow problem and the struggle I refer to is that of obtaining the perfect temperature for comfort. The guy who sits right next to the temperature controls likes heat. I affectionately call him a lizard because the hotter the room, the happier he sits … just like a lizard … Read More

FloVENT, CFD, Airflow, Occupant Comfort

28 Jul, 2009
Mechanical Analysis

A Load of HVAC TLAs

Posted by Robin Bornoff

Robin Bornoff As humans we’ve lived in ‘built environments’ for a very long time.  From the cave to the penthouse suite, the necessity to at first stay warm and dry has now evolved into the desire for comfort. The HVAC industry, rather those with the responsibility to design the built environment, have at their disposal a range of metrics used to judge comfort (comfortability? comfortness? comfortitude? comfortosity? … Read More

FloVENT, HVAC, CFD

21 Jul, 2009

Boris Marovic You might think “he’s gone crazy now” when you read the header but it basically is true. When talking about quantum physics some might think of names such as Heisenberg, Einstein and Schrödinger besides many other very good scientists. You might think that you are using FloEFD or FloTHERM for pumps, valves or any electronic cooling applications but how are you using quantum mechanics with it. Well this … Read More

FloVENT, Quantum Physics, Green Products

15 Jul, 2009

Nazita Saye From time to time I lurk around CFD related forums – just to see what people are talking about. A couple of weeks ago I found a posting on the subtleties of meshing and its relation to accuracy. The discussion rapidly became quite heated – there were some folks who believed that unless simulation gives you 100% accuracy then it is useless while others didn’t believe that accuracy is the only factor … Read More

Mesh, FloVENT, CFD, Design Engineer, Accuracy

9 Jul, 2009

John Wilson As an engineer who uses CFD (Computational Fluid Dynamics) extensively I spend most of my professional life designing in the box. So, what do I mean by box? When considering the built environment a box could be a room such as an office space, building, clean room, data center, etc. For electronics cooling applications there is rack, sub-rack, pizza box,  set-top box, etc. While electronics cooling … Read More

FloVENT, HVAC, CFD

25 Jun, 2009

John Parry When I first started working on electronics cooling it was at the end of what people sometimes refer to as the ‘bipolar age’. CMOS had become established, paving the way for PCs with very low power consumption. The cooling challenge was just to get the heat out of the box, making sure there were no major dead spots in the flow that would lead to overheating. Typical problems tended to be quite obvious, … Read More

Thermal Testing, FloVENT

22 Jun, 2009

Robin Bornoff “A picture paints a thousand words”. Probably not as quickly though. Wouldn’t the world be a different place if we had evolved the ability to communicate via richly contented drawings? Likely we’d have more fingers, smaller ears and would war less due to less frequent commnunication misunderstandings. FloTHERM’s CFD simulation technology creates a wealth of data that reflects what happens in and around … Read More

Thermal Testing, FloVENT

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