Computational Fluid Dynamics

Sanjøy · Post by **Sanjøy** » Wed May 16, 2007 1:39 pm

Anyone this anyones bag ?

timmsky · Post by **timmsky** » Wed May 16, 2007 1:42 pm

Thinking whilst drinking?

Nah....

alicrozier · Post by **alicrozier** » Wed May 16, 2007 3:34 pm

I have some nice people in Norway who do my CFD, also used these guys in Aberdeen...

More for subsea thermal performance/flow assurance rather than aerodynamics...thinking of adding a Gurney flap?

Sanjøy · Post by **Sanjøy** » Wed May 16, 2007 3:37 pm

More mapping heat flow in a data room.

111Robin · Post by **111Robin** » Wed May 16, 2007 7:39 pm

We have a graduate engineer currently doing some analysis with Ansys CFX. Software + licence cost £25K so it's a bit specialised. What sort of analysis do you need performed ?

mac · Post by **mac** » Wed May 16, 2007 10:02 pm

Get Mack to whack in a huge air con unit - then you don't need to worry about it

Mac

Post by **pete** » Wed May 16, 2007 10:20 pm

You have to be impressed at the speed the most obscure question here is answered. I genuinely expected when I opened this thread to see an answer, probably involving several equations, almost certainly written by Robin

Sanjøy · Post by **Sanjøy** » Wed May 16, 2007 10:52 pm

111Robin wrote:We have a graduate engineer currently doing some analysis with Ansys CFX. Software + licence cost £25K so it's a bit specialised. What sort of analysis do you need performed ?

Looking to optimise airflow and analyse positioning of AC units. 100 sq ft rooms with 3 AC units and ~50 rakcs pumping out up to 6kw per rack. Looking to eliminate hotspots and to save energy.

MacK · Post by **MacK** » Thu May 17, 2007 9:01 am

What capacity are the A/C units?

Have you considered cooling the server cabinets rather than the room air?

Sanjøy · Post by **Sanjøy** » Thu May 17, 2007 9:31 am

feck been meaning to get back to you re coming in to have a look around. How you fixed next week ? Lunch on me!

MacK · Post by **MacK** » Thu May 17, 2007 9:35 am

Early part of next week should be okay, for a quick visit, around lunch time!

PM or best to text/mobile to confirm a time.

Rich H · Post by **Rich H** » Thu May 17, 2007 10:29 am

Leave the fridge door open...

Tom · Post by **Tom** » Thu May 17, 2007 12:30 pm

Sanjoy wrote:
111Robin wrote:We have a graduate engineer currently doing some analysis with Ansys CFX. Software + licence cost £25K so it's a bit specialised. What sort of analysis do you need performed ?
Looking to optimise airflow and analyse positioning of AC units. 100 sq ft rooms with 3 AC units and ~50 rakcs pumping out up to 6kw per rack. Looking to eliminate hotspots and to save energy.

sanjoy should get the award for the most random/bizarre questions...

he'll be asking for a feck off great fuel tank next no doubt.....

thinfourth · Post by **thinfourth** » Thu May 17, 2007 11:15 pm

I would chill the racks myself stick a dirty great duct into the suction side of the cabinet and then exhaust to the room then have a fan drawing air out of the room.

It is in scotland we are talking about so your max air temp outside will never be that high so it might be more efficient to move a large volume of air rather then to try and pump heat around which is inherently inefficient. How easy it is to move large volumes of air though depends on how your existing ducting works.

Only big electrics i have been involved with that needed major cooling was liquid cooled using a central cooling system but i don't think this would work too well with server racks, unless you used oil which you then cooled in some rads outside. Though it might be a good idea if designing from scratch as you can move way more heat around using a fluid

Tom wrote:sanjoy should get the award for the most random/bizarre questions...

he'll be asking for a feck off great fuel tank next no doubt.....

I think he should be giving us a percentage of his wages