[maurokillary13]

according to your experience which personal computer (i refer because i have constant travels and i don't use a stationary machine) my max budget is 3500$ dollars, what is important to take in account (the freccuency of the machine (Ghz), with how much RAM, what kind of GPU. Suppose that i need to evaluate with freccuency 3D models usiing VOf, and discrete phase, 1 million cell or more

is there any way to estimate how the machin will work? i mean the time need to perfom some transient calculation, with a very low time step during a almost a 1 second (this is only an example), can you tellme about our personal experience with any machine (dell, acer, hp, etc) and a brief resum of the kind of works and the time estimate vs the use of other computers.

lastly i pretent to adquire a dell computer (precision) anyone has usted this machine before? i'm only a student, sorry for my mistakes

[wkernkamp]

Precision 5750 Workstation

Estimated Value $4,193.83 Estimated Value is Dell’s estimate of product value based on industry data, including the prices at which third-party retailers have offered or valued the same or comparable products, in its most recent survey of major online and/or off-line retailers. Third-party retailer data may not be based on actual sales.
Dell Price $2,929.00
You Save $1,264.83 (30%)
Free Shipping Exceptions to included shipping may apply for remote locations.

Intel Core Processor i7-10750H
Windows 10 Pro English
NVIDIA Quadro RTX 3000 w/6GB GDDR6
32GB, 2X16GB,DDR4 2933Mhz Non-ECC Memory
M.2 512GB PCIe NVMe Class 40 Solid State Drive

17.0-in. display
Starting at 4.70 lbs



Selected this one because it has the maximum 2 channels at the highest frequency of 2933MHz and a total 32 GB of memory. The separate gpu is nice to have to look at the results and the totalk is within your price range at $2,929.

[danbence]

If you can give me an estimate of the size of the volume you wish to simulate and the maximum flow rate, I could do a very rough estimate of the simulation time for 1M cells for 1 second.

[maurokillary13]

Originally Posted by wkernkamp

Precision 5750 Workstation

Estimated Value $4,193.83 Estimated Value is Dell’s estimate of product value based on industry data, including the prices at which third-party retailers have offered or valued the same or comparable products, in its most recent survey of major online and/or off-line retailers. Third-party retailer data may not be based on actual sales.
Dell Price $2,929.00
You Save $1,264.83 (30%)
Free Shipping Exceptions to included shipping may apply for remote locations.

Intel Core Processor i7-10750H
Windows 10 Pro English
NVIDIA Quadro RTX 3000 w/6GB GDDR6
32GB, 2X16GB,DDR4 2933Mhz Non-ECC Memory
M.2 512GB PCIe NVMe Class 40 Solid State Drive

17.0-in. display
Starting at 4.70 lbs



Selected this one because it has the maximum 2 channels at the highest frequency of 2933MHz and a total 32 GB of memory. The separate gpu is nice to have to look at the results and the totalk is within your price range at $2,929.

First of all thanks for the repply, just a little question, how many cores are important according with the number of GB of de RAM? Intel i7- 10750H has 6.

[maurokillary13]

Originally Posted by danbence

If you can give me an estimate of the size of the volume you wish to simulate and the maximum flow rate, I could do a very rough estimate of the simulation time for 1M cells for 1 second.

i don´t if i understood well, can you make some calculations to estimate the time? how?? based in what?
the problem essencially is this:

900X3 Cells, (Impingment 3D jet water, interaction with an air atmosphere, VOF), around 0.06 seconds (velocity of 3.2 m/s), pipe diameter 6.35 mm, i used a delta t of 1e-6, the relation H/D (height/diameter) is too shor, 1.

[danbence]

Ok, I have run one of my simulations on a similar spec CPU to a i7-10750H. 1.8M cells took 20 seconds per timestep, so 60,000 timesteps would take 14 days. This is very rough because the settings on my simulation are unlikely to be similar to yours. However, it will give you some indication of run time.

[burakboga]

Best Laptops for CFD Simulations